./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/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_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c --- 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 23:17:31,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:17:31,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:17:31,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:17:31,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:17:31,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:17:31,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:17:31,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:17:31,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:17:31,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:17:31,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:17:31,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:17:31,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:17:31,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:17:31,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:17:31,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:17:31,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:17:31,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:17:31,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:17:31,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:17:31,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:17:31,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:17:31,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:17:31,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:17:31,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:17:31,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:17:31,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:17:31,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:17:31,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:17:31,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:17:31,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:17:31,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:17:31,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:17:31,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:17:31,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:17:31,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:17:31,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:17:31,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:17:31,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:17:31,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:17:31,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:17:31,760 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:17:31,788 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:17:31,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:17:31,790 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:17:31,790 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:17:31,790 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:17:31,791 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:17:31,791 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:17:31,791 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:17:31,792 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:17:31,792 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:17:31,793 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:17:31,793 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:17:31,793 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:17:31,793 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:17:31,794 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:17:31,794 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:17:31,794 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:17:31,794 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:17:31,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:17:31,795 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:17:31,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:17:31,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:17:31,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:17:31,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:17:31,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:17:31,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:17:31,797 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:17:31,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:17:31,798 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:17:31,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:17:31,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:17:31,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:17:31,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:17:31,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:17:31,799 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:17:31,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:17:31,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:17:31,800 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:17:31,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:17:31,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:17:31,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:17:31,802 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_a2967cde-4cad-4140-a31f-de56f77d65a4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c [2022-11-25 23:17:32,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:17:32,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:17:32,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:17:32,104 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:17:32,104 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:17:32,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2022-11-25 23:17:35,158 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:17:35,362 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:17:35,363 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2022-11-25 23:17:35,371 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/data/bf8377bed/60b5edbcbd7b472ea391aa57420d576a/FLAG01220820d [2022-11-25 23:17:35,388 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/data/bf8377bed/60b5edbcbd7b472ea391aa57420d576a [2022-11-25 23:17:35,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:17:35,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:17:35,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:17:35,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:17:35,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:17:35,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:17:35" (1/1) ... [2022-11-25 23:17:35,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fe87571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:35, skipping insertion in model container [2022-11-25 23:17:35,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:17:35" (1/1) ... [2022-11-25 23:17:35,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:17:35,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:17:35,633 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2022-11-25 23:17:35,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:17:35,719 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:17:35,746 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2022-11-25 23:17:35,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:17:35,807 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:17:35,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:35 WrapperNode [2022-11-25 23:17:35,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:17:35,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:17:35,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:17:35,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:17:35,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:35" (1/1) ... [2022-11-25 23:17:35,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:35" (1/1) ... [2022-11-25 23:17:35,851 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 166 [2022-11-25 23:17:35,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:17:35,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:17:35,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:17:35,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:17:35,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:35" (1/1) ... [2022-11-25 23:17:35,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:35" (1/1) ... [2022-11-25 23:17:35,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:35" (1/1) ... [2022-11-25 23:17:35,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:35" (1/1) ... [2022-11-25 23:17:35,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:35" (1/1) ... [2022-11-25 23:17:35,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:35" (1/1) ... [2022-11-25 23:17:35,881 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:35" (1/1) ... [2022-11-25 23:17:35,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:35" (1/1) ... [2022-11-25 23:17:35,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:17:35,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:17:35,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:17:35,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:17:35,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:35" (1/1) ... [2022-11-25 23:17:35,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:17:35,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:17:35,942 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:17:35,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:17:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:17:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:17:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-25 23:17:36,001 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-25 23:17:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:17:36,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:17:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 23:17:36,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 23:17:36,131 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:17:36,146 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:17:36,713 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:17:36,973 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:17:36,973 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 23:17:36,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:17:36 BoogieIcfgContainer [2022-11-25 23:17:36,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:17:36,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:17:36,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:17:36,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:17:36,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:17:35" (1/3) ... [2022-11-25 23:17:36,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4960358f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:17:36, skipping insertion in model container [2022-11-25 23:17:36,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:35" (2/3) ... [2022-11-25 23:17:36,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4960358f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:17:36, skipping insertion in model container [2022-11-25 23:17:36,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:17:36" (3/3) ... [2022-11-25 23:17:36,989 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2022-11-25 23:17:37,018 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:17:37,019 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:17:37,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:17:37,079 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@7c7568ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:17:37,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:17:37,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 32 states have internal predecessors, (47), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 23:17:37,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-25 23:17:37,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:17:37,091 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:17:37,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:17:37,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:17:37,096 INFO L85 PathProgramCache]: Analyzing trace with hash 7323111, now seen corresponding path program 1 times [2022-11-25 23:17:37,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:17:37,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503146602] [2022-11-25 23:17:37,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:17:37,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:17:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:17:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 23:17:37,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:17:37,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503146602] [2022-11-25 23:17:37,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503146602] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:17:37,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067537836] [2022-11-25 23:17:37,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:17:37,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:17:37,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:17:37,488 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:17:37,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:17:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:17:37,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-25 23:17:37,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:17:37,974 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 23:17:37,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:17:38,420 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 23:17:38,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067537836] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:17:38,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [84443037] [2022-11-25 23:17:38,462 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-25 23:17:38,473 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:17:38,478 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:17:38,488 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:17:38,489 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:17:38,644 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 58 for LOIs [2022-11-25 23:17:38,701 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:17:39,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [84443037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:17:39,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:17:39,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 12, 11] total 29 [2022-11-25 23:17:39,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753575037] [2022-11-25 23:17:39,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:17:39,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 23:17:39,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:17:39,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 23:17:39,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2022-11-25 23:17:39,935 INFO L87 Difference]: Start difference. First operand has 39 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 32 states have internal predecessors, (47), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 9 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 23:17:40,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:17:40,283 INFO L93 Difference]: Finished difference Result 108 states and 170 transitions. [2022-11-25 23:17:40,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 23:17:40,286 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2022-11-25 23:17:40,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:17:40,297 INFO L225 Difference]: With dead ends: 108 [2022-11-25 23:17:40,297 INFO L226 Difference]: Without dead ends: 65 [2022-11-25 23:17:40,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2022-11-25 23:17:40,308 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 57 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:17:40,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 202 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 23:17:40,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-25 23:17:40,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 48. [2022-11-25 23:17:40,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 40 states have internal predecessors, (54), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-25 23:17:40,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2022-11-25 23:17:40,368 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 32 [2022-11-25 23:17:40,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:17:40,369 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2022-11-25 23:17:40,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 23:17:40,370 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2022-11-25 23:17:40,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-25 23:17:40,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:17:40,374 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:17:40,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:17:40,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 23:17:40,586 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:17:40,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:17:40,587 INFO L85 PathProgramCache]: Analyzing trace with hash 39928315, now seen corresponding path program 1 times [2022-11-25 23:17:40,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:17:40,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464439645] [2022-11-25 23:17:40,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:17:40,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:17:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:17:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 23:17:40,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:17:40,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464439645] [2022-11-25 23:17:40,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464439645] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:17:40,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766901742] [2022-11-25 23:17:40,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:17:40,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:17:40,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:17:40,865 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:17:40,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:17:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:17:40,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-25 23:17:40,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:17:41,101 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 23:17:41,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:17:41,393 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 23:17:41,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766901742] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:17:41,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1674004714] [2022-11-25 23:17:41,396 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-25 23:17:41,397 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:17:41,397 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:17:41,397 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:17:41,398 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:17:41,974 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 40 for LOIs [2022-11-25 23:17:41,985 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-25 23:17:42,106 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:17:44,304 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '707#(and (= (select |#length| 3) 12) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select (select |#memory_int| 1) 0) 48) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:17:44,304 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:17:44,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:17:44,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 12, 11] total 23 [2022-11-25 23:17:44,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987378464] [2022-11-25 23:17:44,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:17:44,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 23:17:44,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:17:44,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 23:17:44,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1337, Unknown=0, NotChecked=0, Total=1482 [2022-11-25 23:17:44,308 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 23 states, 20 states have (on average 2.55) internal successors, (51), 19 states have internal predecessors, (51), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 23:17:45,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:17:45,491 INFO L93 Difference]: Finished difference Result 164 states and 256 transitions. [2022-11-25 23:17:45,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-25 23:17:45,492 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.55) internal successors, (51), 19 states have internal predecessors, (51), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 37 [2022-11-25 23:17:45,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:17:45,495 INFO L225 Difference]: With dead ends: 164 [2022-11-25 23:17:45,495 INFO L226 Difference]: Without dead ends: 124 [2022-11-25 23:17:45,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=329, Invalid=2863, Unknown=0, NotChecked=0, Total=3192 [2022-11-25 23:17:45,498 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 172 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:17:45,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 428 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:17:45,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-25 23:17:45,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 70. [2022-11-25 23:17:45,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 57 states have internal predecessors, (76), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-25 23:17:45,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 92 transitions. [2022-11-25 23:17:45,527 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 92 transitions. Word has length 37 [2022-11-25 23:17:45,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:17:45,528 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 92 transitions. [2022-11-25 23:17:45,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.55) internal successors, (51), 19 states have internal predecessors, (51), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 23:17:45,528 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 92 transitions. [2022-11-25 23:17:45,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-25 23:17:45,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:17:45,530 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:17:45,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:17:45,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:17:45,736 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:17:45,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:17:45,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1768125286, now seen corresponding path program 1 times [2022-11-25 23:17:45,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:17:45,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470801815] [2022-11-25 23:17:45,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:17:45,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:17:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:17:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 23:17:45,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:17:45,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470801815] [2022-11-25 23:17:45,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470801815] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:17:45,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149431968] [2022-11-25 23:17:45,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:17:45,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:17:45,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:17:45,855 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:17:45,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:17:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:17:45,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:17:45,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:17:46,001 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 23:17:46,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:17:46,095 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 23:17:46,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149431968] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:17:46,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1939207870] [2022-11-25 23:17:46,102 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-25 23:17:46,102 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:17:46,103 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:17:46,103 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:17:46,103 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:17:46,718 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-25 23:17:46,794 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:17:47,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1939207870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:17:47,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:17:47,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [5, 5, 5] total 27 [2022-11-25 23:17:47,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322299631] [2022-11-25 23:17:47,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:17:47,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 23:17:47,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:17:47,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 23:17:47,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-11-25 23:17:47,894 INFO L87 Difference]: Start difference. First operand 70 states and 92 transitions. Second operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 23:17:49,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:17:49,036 INFO L93 Difference]: Finished difference Result 139 states and 206 transitions. [2022-11-25 23:17:49,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 23:17:49,037 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 39 [2022-11-25 23:17:49,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:17:49,038 INFO L225 Difference]: With dead ends: 139 [2022-11-25 23:17:49,038 INFO L226 Difference]: Without dead ends: 124 [2022-11-25 23:17:49,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=194, Invalid=862, Unknown=0, NotChecked=0, Total=1056 [2022-11-25 23:17:49,040 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 99 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:17:49,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 269 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 23:17:49,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-25 23:17:49,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 78. [2022-11-25 23:17:49,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 61 states have (on average 1.3114754098360655) internal successors, (80), 63 states have internal predecessors, (80), 10 states have call successors, (10), 4 states have call predecessors, (10), 6 states have return successors, (17), 10 states have call predecessors, (17), 9 states have call successors, (17) [2022-11-25 23:17:49,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 107 transitions. [2022-11-25 23:17:49,073 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 107 transitions. Word has length 39 [2022-11-25 23:17:49,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:17:49,074 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 107 transitions. [2022-11-25 23:17:49,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 23:17:49,075 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 107 transitions. [2022-11-25 23:17:49,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-25 23:17:49,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:17:49,076 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:17:49,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:17:49,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:17:49,296 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:17:49,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:17:49,297 INFO L85 PathProgramCache]: Analyzing trace with hash 381072034, now seen corresponding path program 1 times [2022-11-25 23:17:49,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:17:49,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829889954] [2022-11-25 23:17:49,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:17:49,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:17:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:17:49,579 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 23:17:49,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:17:49,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829889954] [2022-11-25 23:17:49,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829889954] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:17:49,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157376370] [2022-11-25 23:17:49,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:17:49,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:17:49,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:17:49,585 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:17:49,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:17:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:17:49,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-25 23:17:49,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:17:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 23:17:49,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:17:50,053 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-25 23:17:50,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157376370] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 23:17:50,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:17:50,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 10] total 18 [2022-11-25 23:17:50,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030681261] [2022-11-25 23:17:50,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:17:50,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:17:50,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:17:50,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:17:50,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-11-25 23:17:50,055 INFO L87 Difference]: Start difference. First operand 78 states and 107 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 23:17:50,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:17:50,176 INFO L93 Difference]: Finished difference Result 100 states and 135 transitions. [2022-11-25 23:17:50,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:17:50,177 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2022-11-25 23:17:50,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:17:50,178 INFO L225 Difference]: With dead ends: 100 [2022-11-25 23:17:50,178 INFO L226 Difference]: Without dead ends: 83 [2022-11-25 23:17:50,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-25 23:17:50,180 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 4 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:17:50,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 196 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:17:50,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-25 23:17:50,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 74. [2022-11-25 23:17:50,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 60 states have internal predecessors, (79), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (11), 9 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-25 23:17:50,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 98 transitions. [2022-11-25 23:17:50,206 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 98 transitions. Word has length 41 [2022-11-25 23:17:50,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:17:50,206 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 98 transitions. [2022-11-25 23:17:50,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 23:17:50,207 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 98 transitions. [2022-11-25 23:17:50,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-25 23:17:50,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:17:50,218 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:17:50,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 23:17:50,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:17:50,424 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:17:50,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:17:50,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1396551474, now seen corresponding path program 1 times [2022-11-25 23:17:50,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:17:50,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323885676] [2022-11-25 23:17:50,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:17:50,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:17:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:17:50,553 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 23:17:50,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:17:50,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323885676] [2022-11-25 23:17:50,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323885676] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:17:50,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210634639] [2022-11-25 23:17:50,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:17:50,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:17:50,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:17:50,555 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:17:50,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 23:17:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:17:50,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:17:50,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:17:50,699 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 23:17:50,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:17:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 23:17:50,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210634639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:17:50,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1122756717] [2022-11-25 23:17:50,787 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-25 23:17:50,787 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:17:50,788 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:17:50,788 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:17:50,788 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:18:41,736 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2022-11-25 23:18:41,790 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-25 23:18:41,913 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:18:50,739 WARN L233 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 180 DAG size of output: 135 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:18:56,985 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 184 DAG size of output: 139 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:19:09,323 WARN L233 SmtUtils]: Spent 11.76s on a formula simplification. DAG size of input: 335 DAG size of output: 131 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:19:09,701 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2410#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-25 23:19:09,702 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:19:09,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:19:09,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-25 23:19:09,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949125249] [2022-11-25 23:19:09,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:19:09,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 23:19:09,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:19:09,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 23:19:09,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2022-11-25 23:19:09,704 INFO L87 Difference]: Start difference. First operand 74 states and 98 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 23:19:09,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:19:09,989 INFO L93 Difference]: Finished difference Result 215 states and 308 transitions. [2022-11-25 23:19:09,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 23:19:09,990 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 43 [2022-11-25 23:19:09,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:19:09,996 INFO L225 Difference]: With dead ends: 215 [2022-11-25 23:19:09,996 INFO L226 Difference]: Without dead ends: 147 [2022-11-25 23:19:10,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=185, Invalid=871, Unknown=0, NotChecked=0, Total=1056 [2022-11-25 23:19:10,004 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 63 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:19:10,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 97 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:19:10,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-25 23:19:10,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 91. [2022-11-25 23:19:10,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 77 states have (on average 1.3116883116883118) internal successors, (101), 77 states have internal predecessors, (101), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (11), 9 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-25 23:19:10,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 120 transitions. [2022-11-25 23:19:10,049 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 120 transitions. Word has length 43 [2022-11-25 23:19:10,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:19:10,050 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 120 transitions. [2022-11-25 23:19:10,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 23:19:10,051 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 120 transitions. [2022-11-25 23:19:10,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-25 23:19:10,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:19:10,053 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:19:10,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 23:19:10,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:19:10,259 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:19:10,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:19:10,259 INFO L85 PathProgramCache]: Analyzing trace with hash -206859766, now seen corresponding path program 1 times [2022-11-25 23:19:10,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:19:10,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298108962] [2022-11-25 23:19:10,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:19:10,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:19:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:19:10,449 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 23:19:10,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:19:10,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298108962] [2022-11-25 23:19:10,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298108962] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:19:10,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356908781] [2022-11-25 23:19:10,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:19:10,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:19:10,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:19:10,451 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:19:10,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 23:19:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:19:10,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 23:19:10,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:19:10,670 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 23:19:10,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:19:10,852 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-25 23:19:10,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356908781] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:19:10,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [973975461] [2022-11-25 23:19:10,854 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-25 23:19:10,855 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:19:10,855 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:19:10,855 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:19:10,855 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:20:00,723 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2022-11-25 23:20:00,763 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-25 23:20:00,987 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:20:26,002 WARN L233 SmtUtils]: Spent 11.71s on a formula simplification. DAG size of input: 335 DAG size of output: 131 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:20:26,468 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3149#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-25 23:20:26,468 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:20:26,468 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:20:26,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 7] total 17 [2022-11-25 23:20:26,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632386693] [2022-11-25 23:20:26,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:20:26,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 23:20:26,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:20:26,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 23:20:26,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1004, Unknown=0, NotChecked=0, Total=1122 [2022-11-25 23:20:26,471 INFO L87 Difference]: Start difference. First operand 91 states and 120 transitions. Second operand has 17 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 4 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-25 23:20:27,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:20:27,126 INFO L93 Difference]: Finished difference Result 185 states and 240 transitions. [2022-11-25 23:20:27,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 23:20:27,128 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 4 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 45 [2022-11-25 23:20:27,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:20:27,129 INFO L225 Difference]: With dead ends: 185 [2022-11-25 23:20:27,129 INFO L226 Difference]: Without dead ends: 78 [2022-11-25 23:20:27,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=237, Invalid=1833, Unknown=0, NotChecked=0, Total=2070 [2022-11-25 23:20:27,131 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 48 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:20:27,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 310 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 23:20:27,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-25 23:20:27,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 59. [2022-11-25 23:20:27,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.22) internal successors, (61), 50 states have internal predecessors, (61), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 23:20:27,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2022-11-25 23:20:27,149 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 45 [2022-11-25 23:20:27,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:20:27,150 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2022-11-25 23:20:27,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 4 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-25 23:20:27,150 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2022-11-25 23:20:27,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-25 23:20:27,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:20:27,151 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:20:27,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 23:20:27,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 23:20:27,357 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:20:27,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:20:27,357 INFO L85 PathProgramCache]: Analyzing trace with hash -55065420, now seen corresponding path program 2 times [2022-11-25 23:20:27,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:20:27,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627158238] [2022-11-25 23:20:27,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:27,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:20:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:20:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 23:20:27,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:20:27,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627158238] [2022-11-25 23:20:27,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627158238] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:20:27,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746659277] [2022-11-25 23:20:27,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:20:27,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:20:27,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:20:27,588 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:20:27,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 23:20:28,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 23:20:28,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:20:28,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-25 23:20:28,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:20:28,242 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-25 23:20:28,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:20:28,672 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 23:20:28,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746659277] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:20:28,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1945456945] [2022-11-25 23:20:28,675 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-25 23:20:28,675 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:20:28,676 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:20:28,676 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:20:28,676 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:21:16,886 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2022-11-25 23:21:16,933 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-25 23:21:17,114 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:21:26,647 WARN L233 SmtUtils]: Spent 5.59s on a formula simplification. DAG size of input: 180 DAG size of output: 135 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:21:33,731 WARN L233 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 184 DAG size of output: 139 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:21:46,351 WARN L233 SmtUtils]: Spent 11.69s on a formula simplification. DAG size of input: 335 DAG size of output: 131 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:21:46,990 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3857#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-25 23:21:46,990 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:21:46,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:21:46,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 10] total 22 [2022-11-25 23:21:46,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123555074] [2022-11-25 23:21:46,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:21:46,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-25 23:21:46,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:21:46,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-25 23:21:46,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1333, Unknown=0, NotChecked=0, Total=1482 [2022-11-25 23:21:46,993 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 22 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-25 23:21:48,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:21:48,000 INFO L93 Difference]: Finished difference Result 110 states and 137 transitions. [2022-11-25 23:21:48,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 23:21:48,001 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) Word has length 52 [2022-11-25 23:21:48,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:21:48,001 INFO L225 Difference]: With dead ends: 110 [2022-11-25 23:21:48,001 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 23:21:48,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 30.7s TimeCoverageRelationStatistics Valid=321, Invalid=2541, Unknown=0, NotChecked=0, Total=2862 [2022-11-25 23:21:48,004 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 140 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:21:48,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 191 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 23:21:48,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 23:21:48,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 23:21:48,005 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 23:21:48,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 23:21:48,006 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2022-11-25 23:21:48,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:21:48,006 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 23:21:48,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-25 23:21:48,006 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 23:21:48,006 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 23:21:48,009 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 23:21:48,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 23:21:48,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 23:21:48,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-25 23:22:00,726 INFO L895 garLoopResultBuilder]: At program point L73(lines 28 81) the Hoare annotation is: (let ((.cse3 (not (= |#NULL.offset| 0))) (.cse1 (+ 129 base2flt_~e)) (.cse12 (not (= |base2flt_#in~m| 0))) (.cse16 (not (= |#NULL.base| 0)))) (and (let ((.cse0 (= |base2flt_#in~m| 1))) (or (and (= (mod base2flt_~m 2) 0) .cse0 (< 0 .cse1) (<= base2flt_~e 126)) (let ((.cse15 (select |#memory_int| 1))) (let ((.cse2 (not (= (select .cse15 0) 48))) (.cse4 (not (= 2 (select |#length| 1)))) (.cse5 (not (< 0 |#StackHeapBarrier|))) (.cse6 (not (= (select |#valid| 3) 1))) (.cse7 (not (= (select |#length| 3) 12))) (.cse8 (not (= (select |#valid| 0) 0))) (.cse9 (not (= (select .cse15 1) 0))) (.cse10 (not (= 22 (select |#length| 2)))) (.cse11 (not (= (select |#valid| 1) 1))) (.cse13 (not (= (select |#valid| 2) 1))) (.cse14 (not (= |base2flt_#in~e| 0)))) (and (or .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (or .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse13 .cse14 (not .cse0))))) .cse16)) (or (not (<= 0 (+ 128 |base2flt_#in~e|))) .cse3 (and (<= 0 .cse1) (or (<= (mod base2flt_~__retres4~0 4294967296) 0) .cse12) (<= base2flt_~e 127) (or .cse12 (<= (mod |base2flt_#res| 4294967296) 0))) .cse16 (not (<= 0 |#StackHeapBarrier|)) (not (<= |base2flt_#in~e| 127))))) [2022-11-25 23:22:00,727 INFO L895 garLoopResultBuilder]: At program point L57-2(lines 57 72) the Hoare annotation is: (let ((.cse1 (not (= |#NULL.offset| 0))) (.cse3 (not (= |base2flt_#in~m| 0))) (.cse2 (not (= |#NULL.base| 0)))) (and (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) .cse1 (not (= 2 (select |#length| 1))) (not (< 0 |#StackHeapBarrier|)) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= 22 (select |#length| 2))) (not (= (select |#valid| 1) 1)) .cse2 .cse3 (not (= (select |#valid| 2) 1)) (not (= |base2flt_#in~e| 0)))) (or (not (<= 0 (+ 128 |base2flt_#in~e|))) .cse1 (and (<= |base2flt_#in~e| base2flt_~e) (or (<= (mod base2flt_~__retres4~0 4294967296) 0) .cse3) (<= base2flt_~e 127) (or .cse3 (<= (mod |base2flt_#res| 4294967296) 0)) (not (= |base2flt_#in~m| 1))) .cse2 (not (<= 0 |#StackHeapBarrier|)) (not (<= |base2flt_#in~e| 127))))) [2022-11-25 23:22:00,727 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 34) no Hoare annotation was computed. [2022-11-25 23:22:00,727 INFO L899 garLoopResultBuilder]: For program point L58(lines 57 72) no Hoare annotation was computed. [2022-11-25 23:22:00,727 INFO L902 garLoopResultBuilder]: At program point base2fltENTRY(lines 24 82) the Hoare annotation is: true [2022-11-25 23:22:00,727 INFO L895 garLoopResultBuilder]: At program point L79(lines 28 81) the Hoare annotation is: (let ((.cse9 (+ 129 base2flt_~e)) (.cse7 (= base2flt_~e |base2flt_#in~e|)) (.cse4 (= base2flt_~m |base2flt_#in~m|))) (let ((.cse5 (or (<= (+ 128 base2flt_~e) 0) (and .cse7 (= (mod base2flt_~m 4294967296) 0) .cse4))) (.cse6 (< 0 .cse9)) (.cse1 (not (= |#NULL.offset| 0))) (.cse2 (not (= |#NULL.base| 0))) (.cse3 (not (= |base2flt_#in~m| 0))) (.cse8 (mod |base2flt_#res| 4294967296))) (and (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) .cse1 (not (= 2 (select |#length| 1))) (not (< 0 |#StackHeapBarrier|)) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= 22 (select |#length| 2))) (not (= (select |#valid| 1) 1)) .cse2 .cse3 (and .cse4 .cse5 .cse6 (or .cse7 (<= .cse8 0)) (<= base2flt_~__retres4~0 0) (<= 0 base2flt_~__retres4~0)) (not (= (select |#valid| 2) 1)) (not (= |base2flt_#in~e| 0)))) (or (not (<= 0 (+ 128 |base2flt_#in~e|))) (and .cse4 .cse5 .cse6 (= base2flt_~__retres4~0 0)) .cse1 .cse2 (and (<= 0 .cse9) (<= base2flt_~e 127) (or .cse3 (< (+ .cse8 (* (div (+ 4294967295 (- .cse8)) 4294967296) 4294967296)) 1))) (not (<= 0 |#StackHeapBarrier|)) (not (<= |base2flt_#in~e| 127)))))) [2022-11-25 23:22:00,728 INFO L899 garLoopResultBuilder]: For program point L38(lines 37 52) no Hoare annotation was computed. [2022-11-25 23:22:00,728 INFO L899 garLoopResultBuilder]: For program point L59(lines 57 72) no Hoare annotation was computed. [2022-11-25 23:22:00,728 INFO L899 garLoopResultBuilder]: For program point base2fltEXIT(lines 24 82) no Hoare annotation was computed. [2022-11-25 23:22:00,729 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 51) no Hoare annotation was computed. [2022-11-25 23:22:00,729 INFO L895 garLoopResultBuilder]: At program point L47-1(lines 37 52) the Hoare annotation is: (let ((.cse0 (not (= |#NULL.offset| 0))) (.cse2 (not (= |#NULL.base| 0))) (.cse1 (not (= |base2flt_#in~m| 0)))) (and (or (not (<= 0 (+ 128 |base2flt_#in~e|))) .cse0 (and (= (mod base2flt_~m 2) 0) (< 0 (+ 129 base2flt_~e)) (or (<= (mod base2flt_~__retres4~0 4294967296) 0) .cse1) (<= base2flt_~e 126) (or .cse1 (<= (mod |base2flt_#res| 4294967296) 0))) .cse2 (and (= base2flt_~e |base2flt_#in~e|) (= base2flt_~m |base2flt_#in~m|) (not (= (mod base2flt_~m 4294967296) 0))) (not (<= 0 |#StackHeapBarrier|)) (not (<= |base2flt_#in~e| 127))) (let ((.cse3 (select |#memory_int| 1))) (or (not (= (select .cse3 0) 48)) .cse0 (not (= 2 (select |#length| 1))) (not (< 0 |#StackHeapBarrier|)) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse3 1) 0)) (not (= 22 (select |#length| 2))) (not (= (select |#valid| 1) 1)) .cse2 .cse1 (not (= (select |#valid| 2) 1)) (not (= |base2flt_#in~e| 0)))))) [2022-11-25 23:22:00,729 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 75) no Hoare annotation was computed. [2022-11-25 23:22:00,729 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-25 23:22:00,730 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 190) no Hoare annotation was computed. [2022-11-25 23:22:00,730 INFO L899 garLoopResultBuilder]: For program point L194(lines 194 211) no Hoare annotation was computed. [2022-11-25 23:22:00,731 INFO L899 garLoopResultBuilder]: For program point L194-2(lines 194 211) no Hoare annotation was computed. [2022-11-25 23:22:00,731 INFO L899 garLoopResultBuilder]: For program point L203(lines 203 208) no Hoare annotation was computed. [2022-11-25 23:22:00,731 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 200) no Hoare annotation was computed. [2022-11-25 23:22:00,731 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 184) no Hoare annotation was computed. [2022-11-25 23:22:00,731 INFO L895 garLoopResultBuilder]: At program point L238(line 238) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-25 23:22:00,731 INFO L899 garLoopResultBuilder]: For program point L238-1(line 238) no Hoare annotation was computed. [2022-11-25 23:22:00,732 INFO L895 garLoopResultBuilder]: At program point L239(line 239) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= |ULTIMATE.start_main_~zero~0#1| 0) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-25 23:22:00,732 INFO L899 garLoopResultBuilder]: For program point L239-1(line 239) no Hoare annotation was computed. [2022-11-25 23:22:00,732 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-25 23:22:00,732 INFO L899 garLoopResultBuilder]: For program point L256(lines 256 272) no Hoare annotation was computed. [2022-11-25 23:22:00,732 INFO L895 garLoopResultBuilder]: At program point L256-1(lines 256 272) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-25 23:22:00,733 INFO L895 garLoopResultBuilder]: At program point L240(line 240) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= |ULTIMATE.start_main_~zero~0#1| 0) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-25 23:22:00,733 INFO L899 garLoopResultBuilder]: For program point L240-1(line 240) no Hoare annotation was computed. [2022-11-25 23:22:00,733 INFO L895 garLoopResultBuilder]: At program point L257-2(lines 257 266) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)) (.cse1 (select |#memory_int| 1))) (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 0 |ULTIMATE.start_main_~tmp___1~0#1|) (<= .cse0 0) (<= (mod |ULTIMATE.start_main_~r_mul~0#1| 4294967296) .cse0) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= (mod |ULTIMATE.start_mulflt_~__retres10~1#1| 4294967296) .cse0) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select .cse1 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-25 23:22:00,733 INFO L899 garLoopResultBuilder]: For program point L158-2(lines 157 218) no Hoare annotation was computed. [2022-11-25 23:22:00,734 INFO L895 garLoopResultBuilder]: At program point L216(lines 157 218) the Hoare annotation is: (let ((.cse17 (select |#memory_int| 1))) (let ((.cse0 (<= |ULTIMATE.start_main_~eb~2#1| 127)) (.cse1 (= (select |#length| 3) 12)) (.cse2 (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128))) (.cse3 (= 22 (select |#length| 2))) (.cse4 (= 2 (select |#length| 1))) (.cse5 (= (select |#valid| 3) 1)) (.cse6 (= (select |#valid| 1) 1)) (.cse7 (= (select |#valid| 0) 0)) (.cse8 (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128))) (.cse9 (= (select |#valid| 2) 1)) (.cse10 (= |#NULL.offset| 0)) (.cse11 (= (select .cse17 0) 48)) (.cse12 (<= |ULTIMATE.start_main_~ea~2#1| 127)) (.cse13 (= (select .cse17 1) 0)) (.cse14 (< 0 |#StackHeapBarrier|)) (.cse15 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~zero~0#1| 0) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 (= |ULTIMATE.start_main_~sa~0#1| 1) .cse12 .cse13 .cse14 .cse15) (let ((.cse16 (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (and .cse0 .cse1 .cse2 .cse3 (<= .cse16 0) .cse4 .cse5 (<= (mod |ULTIMATE.start_mulflt_~__retres10~1#1| 4294967296) .cse16) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15))))) [2022-11-25 23:22:00,734 INFO L895 garLoopResultBuilder]: At program point L241(line 241) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= |ULTIMATE.start_main_~zero~0#1| 0) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-25 23:22:00,734 INFO L899 garLoopResultBuilder]: For program point L241-1(line 241) no Hoare annotation was computed. [2022-11-25 23:22:00,734 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-11-25 23:22:00,735 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2022-11-25 23:22:00,735 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 15 20) the Hoare annotation is: true [2022-11-25 23:22:00,735 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 20) no Hoare annotation was computed. [2022-11-25 23:22:00,735 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 20) no Hoare annotation was computed. [2022-11-25 23:22:00,735 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-11-25 23:22:00,739 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-11-25 23:22:00,742 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:22:00,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:22:00 BoogieIcfgContainer [2022-11-25 23:22:00,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:22:00,808 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:22:00,808 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:22:00,809 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:22:00,809 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:17:36" (3/4) ... [2022-11-25 23:22:00,812 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 23:22:00,819 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2022-11-25 23:22:00,819 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-25 23:22:00,835 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 53 nodes and edges [2022-11-25 23:22:00,840 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-25 23:22:00,841 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-25 23:22:00,841 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 23:22:00,870 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\old(m) == 0)) || (((((m == \old(m) && (128 + e <= 0 || ((e == \old(e) && m % 4294967296 == 0) && m == \old(m)))) && 0 < 129 + e) && (e == \old(e) || \result % 4294967296 <= 0)) && __retres4 <= 0) && 0 <= __retres4)) || !(\valid[2] == 1)) || !(\old(e) == 0)) && ((((((!(0 <= 128 + \old(e)) || (((m == \old(m) && (128 + e <= 0 || ((e == \old(e) && m % 4294967296 == 0) && m == \old(m)))) && 0 < 129 + e) && __retres4 == 0)) || !(#NULL == 0)) || !(#NULL == 0)) || ((0 <= 129 + e && e <= 127) && (!(\old(m) == 0) || \result % 4294967296 + (4294967295 + -(\result % 4294967296)) / 4294967296 * 4294967296 < 1))) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127)) [2022-11-25 23:22:00,870 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(0 <= 128 + \old(e)) || !(#NULL == 0)) || ((((m % 2 == 0 && 0 < 129 + e) && (__retres4 % 4294967296 <= 0 || !(\old(m) == 0))) && e <= 126) && (!(\old(m) == 0) || \result % 4294967296 <= 0))) || !(#NULL == 0)) || ((e == \old(e) && m == \old(m)) && !(m % 4294967296 == 0))) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127)) && (((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) [2022-11-25 23:22:00,871 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) && (((((!(0 <= 128 + \old(e)) || !(#NULL == 0)) || ((((\old(e) <= e && (__retres4 % 4294967296 <= 0 || !(\old(m) == 0))) && e <= 127) && (!(\old(m) == 0) || \result % 4294967296 <= 0)) && !(\old(m) == 1))) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127)) [2022-11-25 23:22:00,871 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((m % 2 == 0 && \old(m) == 1) && 0 < 129 + e) && e <= 126) || (((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) && ((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(\valid[2] == 1)) || !(\old(e) == 0)) || !(\old(m) == 1)))) || !(#NULL == 0)) && (((((!(0 <= 128 + \old(e)) || !(#NULL == 0)) || (((0 <= 129 + e && (__retres4 % 4294967296 <= 0 || !(\old(m) == 0))) && e <= 127) && (!(\old(m) == 0) || \result % 4294967296 <= 0))) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127)) [2022-11-25 23:22:00,914 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 23:22:00,914 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:22:00,915 INFO L158 Benchmark]: Toolchain (without parser) took 265522.99ms. Allocated memory was 157.3MB in the beginning and 474.0MB in the end (delta: 316.7MB). Free memory was 119.3MB in the beginning and 302.2MB in the end (delta: -183.0MB). Peak memory consumption was 132.5MB. Max. memory is 16.1GB. [2022-11-25 23:22:00,915 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 121.6MB. Free memory is still 90.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:22:00,916 INFO L158 Benchmark]: CACSL2BoogieTranslator took 414.34ms. Allocated memory is still 157.3MB. Free memory was 118.8MB in the beginning and 121.5MB in the end (delta: -2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 23:22:00,916 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.99ms. Allocated memory is still 157.3MB. Free memory was 121.5MB in the beginning and 119.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:22:00,916 INFO L158 Benchmark]: Boogie Preprocessor took 34.21ms. Allocated memory is still 157.3MB. Free memory was 119.4MB in the beginning and 118.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:22:00,917 INFO L158 Benchmark]: RCFGBuilder took 1088.93ms. Allocated memory is still 157.3MB. Free memory was 118.1MB in the beginning and 71.9MB in the end (delta: 46.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-11-25 23:22:00,918 INFO L158 Benchmark]: TraceAbstraction took 263827.93ms. Allocated memory was 157.3MB in the beginning and 474.0MB in the end (delta: 316.7MB). Free memory was 71.2MB in the beginning and 307.5MB in the end (delta: -236.3MB). Peak memory consumption was 237.0MB. Max. memory is 16.1GB. [2022-11-25 23:22:00,918 INFO L158 Benchmark]: Witness Printer took 106.18ms. Allocated memory is still 474.0MB. Free memory was 307.5MB in the beginning and 302.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 23:22:00,920 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 121.6MB. Free memory is still 90.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 414.34ms. Allocated memory is still 157.3MB. Free memory was 118.8MB in the beginning and 121.5MB in the end (delta: -2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.99ms. Allocated memory is still 157.3MB. Free memory was 121.5MB in the beginning and 119.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.21ms. Allocated memory is still 157.3MB. Free memory was 119.4MB in the beginning and 118.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1088.93ms. Allocated memory is still 157.3MB. Free memory was 118.1MB in the beginning and 71.9MB in the end (delta: 46.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 263827.93ms. Allocated memory was 157.3MB in the beginning and 474.0MB in the end (delta: 316.7MB). Free memory was 71.2MB in the beginning and 307.5MB in the end (delta: -236.3MB). Peak memory consumption was 237.0MB. Max. memory is 16.1GB. * Witness Printer took 106.18ms. Allocated memory is still 474.0MB. Free memory was 307.5MB in the beginning and 302.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. 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: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 263.7s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 12.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 608 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 583 mSDsluCounter, 1693 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1457 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2233 IncrementalHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 236 mSDtfsCounter, 2233 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 925 GetRequests, 667 SyntacticMatches, 1 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3111 ImplicationChecksByTransitivity, 90.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=5, InterpolantAutomatonStates: 121, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 201 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 131 PreInvPairs, 287 NumberOfFragments, 1367 HoareAnnotationTreeSize, 131 FomulaSimplifications, 14243 FormulaSimplificationTreeSizeReduction, 7.6s HoareSimplificationTime, 13 FomulaSimplificationsInter, 186648 FormulaSimplificationTreeSizeReductionInter, 4.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 578 NumberOfCodeBlocks, 572 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 846 ConstructedInterpolants, 0 QuantifiedInterpolants, 2143 SizeOfPredicates, 51 NumberOfNonLiveVariables, 1069 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 21 InterpolantComputations, 1 PerfectInterpolantSequences, 438/594 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: 0.9s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 33, DAG_INTERPRETER_EARLY_EXITS: 3, TOOLS_POST_APPLICATIONS: 47, TOOLS_POST_TIME: 0.4s, TOOLS_POST_CALL_APPLICATIONS: 18, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 12, TOOLS_POST_RETURN_TIME: 0.2s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 77, TOOLS_QUANTIFIERELIM_TIME: 0.7s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 113, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 17, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 33, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME: 0.1s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 12, CALL_SUMMARIZER_CACHE_MISSES: 2, 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: 527, DAG_COMPRESSION_RETAINED_NODES: 116, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((m % 2 == 0 && \old(m) == 1) && 0 < 129 + e) && e <= 126) || (((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) && ((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(\valid[2] == 1)) || !(\old(e) == 0)) || !(\old(m) == 1)))) || !(#NULL == 0)) && (((((!(0 <= 128 + \old(e)) || !(#NULL == 0)) || (((0 <= 129 + e && (__retres4 % 4294967296 <= 0 || !(\old(m) == 0))) && e <= 127) && (!(\old(m) == 0) || \result % 4294967296 <= 0))) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127)) - InvariantResult [Line: 157]: Loop Invariant Derived loop invariant: (((((((((((((((((eb <= 127 && unknown-#length-unknown[3] == 12) && 0 <= ea + 128) && 22 == unknown-#length-unknown[2]) && zero == 0) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && \valid[1] == 1) && \valid[0] == 0) && 0 <= eb + 128) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && sa == 1) && ea <= 127) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((eb <= 127 && unknown-#length-unknown[3] == 12) && 0 <= ea + 128) && 22 == unknown-#length-unknown[2]) && zero % 4294967296 <= 0) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && __retres10 % 4294967296 <= zero % 4294967296) && \valid[1] == 1) && \valid[0] == 0) && 0 <= eb + 128) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && ea <= 127) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\old(m) == 0)) || (((((m == \old(m) && (128 + e <= 0 || ((e == \old(e) && m % 4294967296 == 0) && m == \old(m)))) && 0 < 129 + e) && (e == \old(e) || \result % 4294967296 <= 0)) && __retres4 <= 0) && 0 <= __retres4)) || !(\valid[2] == 1)) || !(\old(e) == 0)) && ((((((!(0 <= 128 + \old(e)) || (((m == \old(m) && (128 + e <= 0 || ((e == \old(e) && m % 4294967296 == 0) && m == \old(m)))) && 0 < 129 + e) && __retres4 == 0)) || !(#NULL == 0)) || !(#NULL == 0)) || ((0 <= 129 + e && e <= 127) && (!(\old(m) == 0) || \result % 4294967296 + (4294967295 + -(\result % 4294967296)) / 4294967296 * 4294967296 < 1))) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127)) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((!(0 <= 128 + \old(e)) || !(#NULL == 0)) || ((((m % 2 == 0 && 0 < 129 + e) && (__retres4 % 4294967296 <= 0 || !(\old(m) == 0))) && e <= 126) && (!(\old(m) == 0) || \result % 4294967296 <= 0))) || !(#NULL == 0)) || ((e == \old(e) && m == \old(m)) && !(m % 4294967296 == 0))) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127)) && (((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) && (((((!(0 <= 128 + \old(e)) || !(#NULL == 0)) || ((((\old(e) <= e && (__retres4 % 4294967296 <= 0 || !(\old(m) == 0))) && e <= 127) && (!(\old(m) == 0) || \result % 4294967296 <= 0)) && !(\old(m) == 1))) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127)) - InvariantResult [Line: 256]: Loop Invariant Derived loop invariant: ((((((((((((((eb <= 127 && unknown-#length-unknown[3] == 12) && 0 <= ea + 128) && 22 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && \valid[1] == 1) && \valid[0] == 0) && 0 <= eb + 128) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && ea <= 127) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 RESULT: Ultimate proved your program to be correct! [2022-11-25 23:22:01,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2967cde-4cad-4140-a31f-de56f77d65a4/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