./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF --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 b8cf5878e44758bfdbe03c47ec0115857e08941dc4678f844d9c655b0bc177ba --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:18:56,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:18:56,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:18:56,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:18:56,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:18:56,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:18:56,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:18:56,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:18:56,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:18:56,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:18:56,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:18:56,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:18:56,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:18:56,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:18:56,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:18:56,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:18:56,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:18:56,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:18:56,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:18:56,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:18:56,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:18:56,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:18:56,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:18:56,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:18:56,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:18:56,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:18:56,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:18:56,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:18:56,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:18:56,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:18:56,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:18:56,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:18:56,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:18:56,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:18:56,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:18:56,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:18:56,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:18:56,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:18:56,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:18:56,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:18:56,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:18:56,654 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:18:56,708 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:18:56,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:18:56,709 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:18:56,710 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:18:56,710 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:18:56,710 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:18:56,710 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:18:56,710 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:18:56,711 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:18:56,711 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:18:56,711 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:18:56,711 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:18:56,711 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:18:56,712 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:18:56,712 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:18:56,712 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:18:56,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:18:56,713 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:18:56,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:18:56,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:18:56,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:18:56,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:18:56,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:18:56,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:18:56,714 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:18:56,714 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:18:56,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:18:56,715 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:18:56,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:18:56,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:18:56,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:18:56,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:18:56,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:18:56,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:18:56,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:18:56,719 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:18:56,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:18:56,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:18:56,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:18:56,720 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:18:56,720 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8cf5878e44758bfdbe03c47ec0115857e08941dc4678f844d9c655b0bc177ba [2021-11-12 22:18:57,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:18:57,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:18:57,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:18:57,053 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:18:57,053 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:18:57,055 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/floats-cbmc-regression/float12.c [2021-11-12 22:18:57,121 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/data/30deaa068/b6a1c44197094f0faa6f23ed8c104d48/FLAGf8c90c831 [2021-11-12 22:18:57,527 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:18:57,527 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/sv-benchmarks/c/floats-cbmc-regression/float12.c [2021-11-12 22:18:57,533 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/data/30deaa068/b6a1c44197094f0faa6f23ed8c104d48/FLAGf8c90c831 [2021-11-12 22:18:57,543 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/data/30deaa068/b6a1c44197094f0faa6f23ed8c104d48 [2021-11-12 22:18:57,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:18:57,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:18:57,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:18:57,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:18:57,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:18:57,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:18:57" (1/1) ... [2021-11-12 22:18:57,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@642a06a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:57, skipping insertion in model container [2021-11-12 22:18:57,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:18:57" (1/1) ... [2021-11-12 22:18:57,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:18:57,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:18:57,737 WARN L228 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_87efd326-ceb4-4ccf-a274-0ee2625e19e1/sv-benchmarks/c/floats-cbmc-regression/float12.c[500,513] [2021-11-12 22:18:57,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:18:57,749 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:18:57,763 WARN L228 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_87efd326-ceb4-4ccf-a274-0ee2625e19e1/sv-benchmarks/c/floats-cbmc-regression/float12.c[500,513] [2021-11-12 22:18:57,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:18:57,776 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:18:57,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:57 WrapperNode [2021-11-12 22:18:57,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:18:57,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:18:57,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:18:57,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:18:57,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:57" (1/1) ... [2021-11-12 22:18:57,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:57" (1/1) ... [2021-11-12 22:18:57,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:18:57,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:18:57,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:18:57,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:18:57,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:57" (1/1) ... [2021-11-12 22:18:57,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:57" (1/1) ... [2021-11-12 22:18:57,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:57" (1/1) ... [2021-11-12 22:18:57,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:57" (1/1) ... [2021-11-12 22:18:57,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:57" (1/1) ... [2021-11-12 22:18:57,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:57" (1/1) ... [2021-11-12 22:18:57,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:57" (1/1) ... [2021-11-12 22:18:57,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:18:57,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:18:57,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:18:57,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:18:57,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:57" (1/1) ... [2021-11-12 22:18:57,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:18:57,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:18:57,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:18:57,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:18:57,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:18:57,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:18:57,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:18:57,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:18:58,123 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:18:58,123 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:18:58,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:18:58 BoogieIcfgContainer [2021-11-12 22:18:58,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:18:58,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:18:58,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:18:58,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:18:58,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:18:57" (1/3) ... [2021-11-12 22:18:58,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38648b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:18:58, skipping insertion in model container [2021-11-12 22:18:58,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:57" (2/3) ... [2021-11-12 22:18:58,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38648b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:18:58, skipping insertion in model container [2021-11-12 22:18:58,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:18:58" (3/3) ... [2021-11-12 22:18:58,138 INFO L111 eAbstractionObserver]: Analyzing ICFG float12.c [2021-11-12 22:18:58,147 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:18:58,147 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:18:58,209 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:18:58,221 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:18:58,221 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:18:58,235 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:18:58,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-12 22:18:58,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:18:58,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-12 22:18:58,241 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:18:58,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:18:58,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1494612, now seen corresponding path program 1 times [2021-11-12 22:18:58,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:18:58,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324947388] [2021-11-12 22:18:58,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:18:58,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:18:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:18:58,348 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:18:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:18:58,382 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 22:18:58,384 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:18:58,385 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:18:58,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:18:58,396 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-12 22:18:58,399 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:18:58,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:18:58 BoogieIcfgContainer [2021-11-12 22:18:58,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:18:58,418 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:18:58,418 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:18:58,419 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:18:58,419 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:18:58" (3/4) ... [2021-11-12 22:18:58,422 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 22:18:58,422 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:18:58,424 INFO L158 Benchmark]: Toolchain (without parser) took 876.67ms. Allocated memory was 90.2MB in the beginning and 123.7MB in the end (delta: 33.6MB). Free memory was 51.0MB in the beginning and 74.5MB in the end (delta: -23.5MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2021-11-12 22:18:58,424 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 90.2MB. Free memory was 67.3MB in the beginning and 67.2MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:18:58,425 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.05ms. Allocated memory was 90.2MB in the beginning and 123.7MB in the end (delta: 33.6MB). Free memory was 50.8MB in the beginning and 99.7MB in the end (delta: -48.9MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2021-11-12 22:18:58,426 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.62ms. Allocated memory is still 123.7MB. Free memory was 99.7MB in the beginning and 98.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:18:58,426 INFO L158 Benchmark]: Boogie Preprocessor took 17.92ms. Allocated memory is still 123.7MB. Free memory was 98.6MB in the beginning and 97.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:18:58,427 INFO L158 Benchmark]: RCFGBuilder took 301.10ms. Allocated memory is still 123.7MB. Free memory was 97.6MB in the beginning and 88.5MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:18:58,428 INFO L158 Benchmark]: TraceAbstraction took 287.12ms. Allocated memory is still 123.7MB. Free memory was 88.0MB in the beginning and 75.0MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 22:18:58,428 INFO L158 Benchmark]: Witness Printer took 4.08ms. Allocated memory is still 123.7MB. Free memory was 75.0MB in the beginning and 74.5MB in the end (delta: 500.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:18:58,432 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 90.2MB. Free memory was 67.3MB in the beginning and 67.2MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.05ms. Allocated memory was 90.2MB in the beginning and 123.7MB in the end (delta: 33.6MB). Free memory was 50.8MB in the beginning and 99.7MB in the end (delta: -48.9MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.62ms. Allocated memory is still 123.7MB. Free memory was 99.7MB in the beginning and 98.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.92ms. Allocated memory is still 123.7MB. Free memory was 98.6MB in the beginning and 97.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 301.10ms. Allocated memory is still 123.7MB. Free memory was 97.6MB in the beginning and 88.5MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 287.12ms. Allocated memory is still 123.7MB. Free memory was 88.0MB in the beginning and 75.0MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.08ms. Allocated memory is still 123.7MB. Free memory was 75.0MB in the beginning and 74.5MB in the end (delta: 500.2kB). There was no memory consumed. 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 - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L8] float f = __VERIFIER_nondet_float(); [L9] double d; [L10] unsigned char x = __VERIFIER_nondet_uchar(); [L12] d=f VAL [d=49, f=49] [L14] COND TRUE f==x VAL [d=49, f=49] [L15] COND TRUE !(d==x) VAL [d=49, f=49] [L15] reach_error() VAL [d=49, f=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-12 22:18:58,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF --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 b8cf5878e44758bfdbe03c47ec0115857e08941dc4678f844d9c655b0bc177ba --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:19:00,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:19:00,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:19:00,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:19:00,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:19:00,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:19:00,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:19:00,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:19:00,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:19:00,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:19:00,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:19:00,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:19:00,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:19:00,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:19:00,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:19:00,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:19:00,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:19:00,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:19:00,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:19:00,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:19:00,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:19:00,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:19:00,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:19:00,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:19:00,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:19:00,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:19:00,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:19:00,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:19:00,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:19:00,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:19:00,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:19:00,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:19:00,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:19:00,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:19:00,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:19:00,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:19:00,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:19:00,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:19:00,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:19:00,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:19:00,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:19:00,951 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 22:19:00,994 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:19:00,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:19:00,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:19:00,996 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:19:00,996 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:19:00,996 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:19:00,996 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:19:00,997 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:19:00,997 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:19:00,997 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:19:00,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:19:01,000 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:19:01,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:19:01,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:19:01,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:19:01,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:19:01,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:19:01,001 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:19:01,001 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:19:01,002 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:19:01,002 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:19:01,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:19:01,002 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:19:01,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:19:01,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:19:01,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:19:01,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:19:01,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:19:01,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:19:01,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:19:01,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:19:01,005 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:19:01,005 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:19:01,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:19:01,006 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:19:01,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:19:01,006 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8cf5878e44758bfdbe03c47ec0115857e08941dc4678f844d9c655b0bc177ba [2021-11-12 22:19:01,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:19:01,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:19:01,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:19:01,428 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:19:01,429 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:19:01,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/floats-cbmc-regression/float12.c [2021-11-12 22:19:01,500 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/data/450547113/7179c07011f74141a208b91d20229c58/FLAG042b8ab95 [2021-11-12 22:19:01,987 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:19:01,987 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/sv-benchmarks/c/floats-cbmc-regression/float12.c [2021-11-12 22:19:01,993 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/data/450547113/7179c07011f74141a208b91d20229c58/FLAG042b8ab95 [2021-11-12 22:19:02,391 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/data/450547113/7179c07011f74141a208b91d20229c58 [2021-11-12 22:19:02,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:19:02,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:19:02,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:19:02,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:19:02,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:19:02,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:19:02" (1/1) ... [2021-11-12 22:19:02,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e1de5a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:19:02, skipping insertion in model container [2021-11-12 22:19:02,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:19:02" (1/1) ... [2021-11-12 22:19:02,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:19:02,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:19:02,605 WARN L228 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_87efd326-ceb4-4ccf-a274-0ee2625e19e1/sv-benchmarks/c/floats-cbmc-regression/float12.c[500,513] [2021-11-12 22:19:02,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:19:02,627 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:19:02,654 WARN L228 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_87efd326-ceb4-4ccf-a274-0ee2625e19e1/sv-benchmarks/c/floats-cbmc-regression/float12.c[500,513] [2021-11-12 22:19:02,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:19:02,677 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:19:02,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:19:02 WrapperNode [2021-11-12 22:19:02,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:19:02,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:19:02,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:19:02,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:19:02,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:19:02" (1/1) ... [2021-11-12 22:19:02,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:19:02" (1/1) ... [2021-11-12 22:19:02,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:19:02,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:19:02,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:19:02,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:19:02,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:19:02" (1/1) ... [2021-11-12 22:19:02,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:19:02" (1/1) ... [2021-11-12 22:19:02,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:19:02" (1/1) ... [2021-11-12 22:19:02,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:19:02" (1/1) ... [2021-11-12 22:19:02,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:19:02" (1/1) ... [2021-11-12 22:19:02,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:19:02" (1/1) ... [2021-11-12 22:19:02,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:19:02" (1/1) ... [2021-11-12 22:19:02,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:19:02,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:19:02,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:19:02,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:19:02,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:19:02" (1/1) ... [2021-11-12 22:19:02,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:19:02,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:19:02,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:19:02,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:19:02,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:19:02,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:19:02,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:19:02,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:19:03,241 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:19:03,242 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:19:03,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:19:03 BoogieIcfgContainer [2021-11-12 22:19:03,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:19:03,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:19:03,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:19:03,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:19:03,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:19:02" (1/3) ... [2021-11-12 22:19:03,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c2d022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:19:03, skipping insertion in model container [2021-11-12 22:19:03,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:19:02" (2/3) ... [2021-11-12 22:19:03,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c2d022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:19:03, skipping insertion in model container [2021-11-12 22:19:03,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:19:03" (3/3) ... [2021-11-12 22:19:03,255 INFO L111 eAbstractionObserver]: Analyzing ICFG float12.c [2021-11-12 22:19:03,261 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:19:03,261 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:19:03,321 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:19:03,328 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:19:03,328 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:19:03,340 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:19:03,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 22:19:03,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:19:03,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 22:19:03,346 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:19:03,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:19:03,352 INFO L85 PathProgramCache]: Analyzing trace with hash 28693795, now seen corresponding path program 1 times [2021-11-12 22:19:03,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:19:03,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659043053] [2021-11-12 22:19:03,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:19:03,364 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:19:03,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:19:03,367 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:19:03,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:19:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:19:03,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:19:03,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:19:04,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:19:04,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:19:07,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:19:07,536 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:19:07,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659043053] [2021-11-12 22:19:07,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659043053] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:19:07,537 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:19:07,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 22:19:07,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049636342] [2021-11-12 22:19:07,540 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:19:07,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:19:07,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:19:07,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:19:07,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:19:07,572 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:19:11,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:19:11,702 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2021-11-12 22:19:11,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:19:11,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-12 22:19:11,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:19:11,715 INFO L225 Difference]: With dead ends: 15 [2021-11-12 22:19:11,715 INFO L226 Difference]: Without dead ends: 0 [2021-11-12 22:19:11,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:19:11,721 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 330.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.66ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 339.46ms IncrementalHoareTripleChecker+Time [2021-11-12 22:19:11,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 8 Invalid, 7 Unknown, 0 Unchecked, 0.66ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 2 Unchecked, 339.46ms Time] [2021-11-12 22:19:11,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-12 22:19:11,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-12 22:19:11,744 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) [2021-11-12 22:19:11,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-12 22:19:11,746 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-11-12 22:19:11,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:19:11,746 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-12 22:19:11,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:19:11,747 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-12 22:19:11,747 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-12 22:19:11,749 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:19:11,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:19:11,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:19:11,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-12 22:19:11,960 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-12 22:19:11,961 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-12 22:19:11,961 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-12 22:19:11,961 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-12 22:19:11,961 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-11-12 22:19:11,962 INFO L858 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2021-11-12 22:19:11,962 INFO L858 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed. [2021-11-12 22:19:11,962 INFO L858 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-11-12 22:19:11,962 INFO L858 garLoopResultBuilder]: For program point L6(lines 6 16) no Hoare annotation was computed. [2021-11-12 22:19:11,965 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-12 22:19:11,967 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:19:11,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:19:11 BoogieIcfgContainer [2021-11-12 22:19:11,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:19:11,985 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:19:11,985 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:19:11,985 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:19:11,986 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:19:03" (3/4) ... [2021-11-12 22:19:11,988 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-12 22:19:11,995 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-12 22:19:11,995 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-12 22:19:11,995 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-12 22:19:11,995 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-12 22:19:12,032 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 22:19:12,038 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:19:12,039 INFO L158 Benchmark]: Toolchain (without parser) took 9640.24ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 38.4MB in the beginning and 61.2MB in the end (delta: -22.8MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2021-11-12 22:19:12,040 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 60.8MB. Free memory is still 40.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:19:12,040 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.71ms. Allocated memory is still 60.8MB. Free memory was 38.2MB in the beginning and 43.1MB in the end (delta: -4.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 22:19:12,041 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.13ms. Allocated memory is still 60.8MB. Free memory was 43.1MB in the beginning and 41.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:19:12,041 INFO L158 Benchmark]: Boogie Preprocessor took 34.09ms. Allocated memory is still 60.8MB. Free memory was 41.5MB in the beginning and 40.5MB in the end (delta: 981.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:19:12,042 INFO L158 Benchmark]: RCFGBuilder took 481.16ms. Allocated memory is still 60.8MB. Free memory was 40.5MB in the beginning and 31.6MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:19:12,042 INFO L158 Benchmark]: TraceAbstraction took 8738.72ms. Allocated memory is still 60.8MB. Free memory was 31.2MB in the beginning and 26.5MB in the end (delta: 4.6MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2021-11-12 22:19:12,043 INFO L158 Benchmark]: Witness Printer took 53.96ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 26.4MB in the beginning and 61.2MB in the end (delta: -34.8MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2021-11-12 22:19:12,045 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 60.8MB. Free memory is still 40.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.71ms. Allocated memory is still 60.8MB. Free memory was 38.2MB in the beginning and 43.1MB in the end (delta: -4.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.13ms. Allocated memory is still 60.8MB. Free memory was 43.1MB in the beginning and 41.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.09ms. Allocated memory is still 60.8MB. Free memory was 41.5MB in the beginning and 40.5MB in the end (delta: 981.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 481.16ms. Allocated memory is still 60.8MB. Free memory was 40.5MB in the beginning and 31.6MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 8738.72ms. Allocated memory is still 60.8MB. Free memory was 31.2MB in the beginning and 26.5MB in the end (delta: 4.6MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Witness Printer took 53.96ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 26.4MB in the beginning and 61.2MB in the end (delta: -34.8MB). Peak memory consumption was 4.6MB. 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: 15]: 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 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 339.46ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 330.05ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 4 mSDtfsCounter, 5 mSolverCounterSat, 0.66ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 2 QuantifiedInterpolants, 39 SizeOfPredicates, 6 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-12 22:19:12,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87efd326-ceb4-4ccf-a274-0ee2625e19e1/bin/utaipan-vmNK8stdcF/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