./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan --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 9558f99275cc5124f556ee48cb271fffdec36102 .................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan --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 9558f99275cc5124f556ee48cb271fffdec36102 ....................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 19:25:55,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:25:55,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:25:55,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:25:55,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:25:55,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:25:55,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:25:55,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:25:55,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:25:55,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:25:55,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:25:55,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:25:55,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:25:55,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:25:55,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:25:55,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:25:55,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:25:55,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:25:55,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:25:55,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:25:55,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:25:55,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:25:55,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:25:55,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:25:55,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:25:55,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:25:55,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:25:55,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:25:55,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:25:55,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:25:55,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:25:55,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:25:55,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:25:55,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:25:55,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:25:55,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:25:55,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:25:55,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:25:55,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:25:55,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:25:55,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:25:55,677 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 19:25:55,698 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:25:55,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:25:55,699 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:25:55,699 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:25:55,699 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:25:55,699 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:25:55,700 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 19:25:55,700 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:25:55,700 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:25:55,700 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 19:25:55,700 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 19:25:55,700 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:25:55,700 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 19:25:55,701 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 19:25:55,701 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 19:25:55,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:25:55,701 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:25:55,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:25:55,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:25:55,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:25:55,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:25:55,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:25:55,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:25:55,702 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:25:55,702 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:25:55,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:25:55,702 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:25:55,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:25:55,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:25:55,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:25:55,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:25:55,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:25:55,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:25:55,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:25:55,703 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 19:25:55,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 19:25:55,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:25:55,704 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:25:55,704 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:25:55,704 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-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9558f99275cc5124f556ee48cb271fffdec36102 [2020-12-09 19:25:55,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:25:55,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:25:55,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:25:55,898 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:25:55,899 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:25:55,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float1.c [2020-12-09 19:25:55,940 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/data/4c99d0d80/dd3020ad13f4493195051511e61f7c53/FLAG3bf3d8f7a [2020-12-09 19:25:56,293 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:25:56,294 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/sv-benchmarks/c/floats-cbmc-regression/float1.c [2020-12-09 19:25:56,298 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/data/4c99d0d80/dd3020ad13f4493195051511e61f7c53/FLAG3bf3d8f7a [2020-12-09 19:25:56,310 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/data/4c99d0d80/dd3020ad13f4493195051511e61f7c53 [2020-12-09 19:25:56,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:25:56,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:25:56,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:25:56,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:25:56,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:25:56,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:25:56" (1/1) ... [2020-12-09 19:25:56,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@253099d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:56, skipping insertion in model container [2020-12-09 19:25:56,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:25:56" (1/1) ... [2020-12-09 19:25:56,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:25:56,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:25:56,439 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2020-12-09 19:25:56,442 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2020-12-09 19:25:56,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:25:56,450 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:25:56,459 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2020-12-09 19:25:56,460 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2020-12-09 19:25:56,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:25:56,470 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:25:56,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:56 WrapperNode [2020-12-09 19:25:56,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:25:56,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:25:56,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:25:56,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:25:56,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:56" (1/1) ... [2020-12-09 19:25:56,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:56" (1/1) ... [2020-12-09 19:25:56,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:25:56,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:25:56,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:25:56,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:25:56,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:56" (1/1) ... [2020-12-09 19:25:56,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:56" (1/1) ... [2020-12-09 19:25:56,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:56" (1/1) ... [2020-12-09 19:25:56,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:56" (1/1) ... [2020-12-09 19:25:56,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:56" (1/1) ... [2020-12-09 19:25:56,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:56" (1/1) ... [2020-12-09 19:25:56,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:56" (1/1) ... [2020-12-09 19:25:56,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:25:56,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:25:56,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:25:56,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:25:56,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:25:56,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:25:56,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:25:56,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 19:25:56,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:25:56,700 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:25:56,701 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 19:25:56,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:25:56 BoogieIcfgContainer [2020-12-09 19:25:56,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:25:56,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:25:56,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:25:56,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:25:56,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:25:56" (1/3) ... [2020-12-09 19:25:56,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71932d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:25:56, skipping insertion in model container [2020-12-09 19:25:56,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:56" (2/3) ... [2020-12-09 19:25:56,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71932d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:25:56, skipping insertion in model container [2020-12-09 19:25:56,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:25:56" (3/3) ... [2020-12-09 19:25:56,710 INFO L111 eAbstractionObserver]: Analyzing ICFG float1.c [2020-12-09 19:25:56,724 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:25:56,726 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 19:25:56,735 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 19:25:56,755 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:25:56,755 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:25:56,755 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:25:56,755 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:25:56,755 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:25:56,755 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:25:56,755 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:25:56,756 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:25:56,767 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-12-09 19:25:56,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-09 19:25:56,770 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:25:56,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-09 19:25:56,771 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:25:56,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:25:56,776 INFO L82 PathProgramCache]: Analyzing trace with hash 51094, now seen corresponding path program 1 times [2020-12-09 19:25:56,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:25:56,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437939748] [2020-12-09 19:25:56,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:25:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:25:56,867 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:25:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:25:56,878 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:25:56,892 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 19:25:56,892 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 19:25:56,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 19:25:56,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:25:56 BoogieIcfgContainer [2020-12-09 19:25:56,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:25:56,905 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:25:56,906 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:25:56,906 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:25:56,906 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:25:56" (3/4) ... [2020-12-09 19:25:56,908 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 19:25:56,908 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:25:56,910 INFO L168 Benchmark]: Toolchain (without parser) took 596.00 ms. Allocated memory is still 86.0 MB. Free memory was 57.5 MB in the beginning and 41.1 MB in the end (delta: 16.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2020-12-09 19:25:56,911 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 86.0 MB. Free memory was 63.7 MB in the beginning and 63.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:25:56,911 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.20 ms. Allocated memory is still 86.0 MB. Free memory was 57.3 MB in the beginning and 47.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 19:25:56,912 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.36 ms. Allocated memory is still 86.0 MB. Free memory was 47.9 MB in the beginning and 65.7 MB in the end (delta: -17.8 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2020-12-09 19:25:56,913 INFO L168 Benchmark]: Boogie Preprocessor took 12.22 ms. Allocated memory is still 86.0 MB. Free memory was 65.7 MB in the beginning and 64.8 MB in the end (delta: 949.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:25:56,913 INFO L168 Benchmark]: RCFGBuilder took 190.78 ms. Allocated memory is still 86.0 MB. Free memory was 64.8 MB in the beginning and 53.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:25:56,914 INFO L168 Benchmark]: TraceAbstraction took 200.67 ms. Allocated memory is still 86.0 MB. Free memory was 52.7 MB in the beginning and 41.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 19:25:56,914 INFO L168 Benchmark]: Witness Printer took 3.05 ms. Allocated memory is still 86.0 MB. Free memory was 41.4 MB in the beginning and 41.1 MB in the end (delta: 317.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:25:56,918 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 86.0 MB. Free memory was 63.7 MB in the beginning and 63.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 156.20 ms. Allocated memory is still 86.0 MB. Free memory was 57.3 MB in the beginning and 47.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.36 ms. Allocated memory is still 86.0 MB. Free memory was 47.9 MB in the beginning and 65.7 MB in the end (delta: -17.8 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 12.22 ms. Allocated memory is still 86.0 MB. Free memory was 65.7 MB in the beginning and 64.8 MB in the end (delta: 949.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 190.78 ms. Allocated memory is still 86.0 MB. Free memory was 64.8 MB in the beginning and 53.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 200.67 ms. Allocated memory is still 86.0 MB. Free memory was 52.7 MB in the beginning and 41.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 3.05 ms. Allocated memory is still 86.0 MB. Free memory was 41.4 MB in the beginning and 41.1 MB in the end (delta: 317.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 10, overapproximation of someBinaryArithmeticDOUBLEoperation at line 9, overapproximation of to_real at line 8. Possible FailurePath: [L5] double x; [L6] int y; [L8] x=2 [L9] x-=0.6 [L10] y=x [L12] COND TRUE !(y==1) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=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, 3 NumberOfCodeBlocks, 3 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 19:25:58,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:25:58,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:25:58,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:25:58,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:25:58,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:25:58,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:25:58,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:25:58,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:25:58,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:25:58,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:25:58,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:25:58,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:25:58,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:25:58,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:25:58,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:25:58,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:25:58,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:25:58,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:25:58,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:25:58,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:25:58,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:25:58,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:25:58,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:25:58,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:25:58,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:25:58,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:25:58,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:25:58,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:25:58,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:25:58,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:25:58,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:25:58,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:25:58,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:25:58,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:25:58,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:25:58,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:25:58,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:25:58,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:25:58,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:25:58,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:25:58,525 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 19:25:58,554 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:25:58,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:25:58,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:25:58,555 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:25:58,555 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:25:58,556 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:25:58,556 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:25:58,556 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:25:58,556 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:25:58,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:25:58,557 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:25:58,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:25:58,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:25:58,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:25:58,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:25:58,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:25:58,558 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:25:58,558 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 19:25:58,558 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 19:25:58,558 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:25:58,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:25:58,559 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:25:58,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:25:58,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:25:58,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 19:25:58,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:25:58,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:25:58,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:25:58,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:25:58,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:25:58,560 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 19:25:58,560 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 19:25:58,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:25:58,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:25:58,561 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:25:58,561 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-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9558f99275cc5124f556ee48cb271fffdec36102 [2020-12-09 19:25:58,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:25:58,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:25:58,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:25:58,803 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:25:58,804 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:25:58,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float1.c [2020-12-09 19:25:58,852 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/data/5c74759db/a8cd421727ac4044944ad83db2b3965b/FLAG2486e107d [2020-12-09 19:25:59,220 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:25:59,220 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/sv-benchmarks/c/floats-cbmc-regression/float1.c [2020-12-09 19:25:59,226 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/data/5c74759db/a8cd421727ac4044944ad83db2b3965b/FLAG2486e107d [2020-12-09 19:25:59,246 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/data/5c74759db/a8cd421727ac4044944ad83db2b3965b [2020-12-09 19:25:59,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:25:59,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:25:59,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:25:59,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:25:59,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:25:59,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:25:59" (1/1) ... [2020-12-09 19:25:59,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e061ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:59, skipping insertion in model container [2020-12-09 19:25:59,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:25:59" (1/1) ... [2020-12-09 19:25:59,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:25:59,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:25:59,359 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2020-12-09 19:25:59,362 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2020-12-09 19:25:59,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:25:59,373 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:25:59,383 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2020-12-09 19:25:59,384 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2020-12-09 19:25:59,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:25:59,407 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:25:59,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:59 WrapperNode [2020-12-09 19:25:59,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:25:59,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:25:59,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:25:59,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:25:59,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:59" (1/1) ... [2020-12-09 19:25:59,426 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:59" (1/1) ... [2020-12-09 19:25:59,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:25:59,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:25:59,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:25:59,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:25:59,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:59" (1/1) ... [2020-12-09 19:25:59,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:59" (1/1) ... [2020-12-09 19:25:59,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:59" (1/1) ... [2020-12-09 19:25:59,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:59" (1/1) ... [2020-12-09 19:25:59,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:59" (1/1) ... [2020-12-09 19:25:59,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:59" (1/1) ... [2020-12-09 19:25:59,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:59" (1/1) ... [2020-12-09 19:25:59,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:25:59,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:25:59,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:25:59,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:25:59,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:25:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:25:59,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:25:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 19:25:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:26:00,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:26:00,278 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 19:26:00,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:26:00 BoogieIcfgContainer [2020-12-09 19:26:00,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:26:00,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:26:00,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:26:00,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:26:00,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:25:59" (1/3) ... [2020-12-09 19:26:00,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d10a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:26:00, skipping insertion in model container [2020-12-09 19:26:00,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:25:59" (2/3) ... [2020-12-09 19:26:00,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d10a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:26:00, skipping insertion in model container [2020-12-09 19:26:00,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:26:00" (3/3) ... [2020-12-09 19:26:00,284 INFO L111 eAbstractionObserver]: Analyzing ICFG float1.c [2020-12-09 19:26:00,293 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:26:00,295 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 19:26:00,301 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 19:26:00,317 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:26:00,317 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:26:00,317 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:26:00,317 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:26:00,317 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:26:00,317 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:26:00,317 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:26:00,317 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:26:00,325 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-12-09 19:26:00,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 19:26:00,328 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:26:00,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 19:26:00,333 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:26:00,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:26:00,336 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-12-09 19:26:00,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:26:00,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602858034] [2020-12-09 19:26:00,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 19:26:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:26:00,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 19:26:00,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:26:00,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:26:00,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:26:00,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602858034] [2020-12-09 19:26:00,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:26:00,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:26:00,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074866180] [2020-12-09 19:26:00,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:26:00,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:26:00,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:26:00,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:26:00,529 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-12-09 19:26:00,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:26:00,831 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-12-09 19:26:00,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:26:00,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-12-09 19:26:00,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:26:00,837 INFO L225 Difference]: With dead ends: 17 [2020-12-09 19:26:00,837 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 19:26:00,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:26:00,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 19:26:00,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 19:26:00,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 19:26:00,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 19:26:00,856 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-12-09 19:26:00,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:26:00,856 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 19:26:00,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:26:00,856 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 19:26:00,856 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 19:26:01,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 19:26:01,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 19:26:01,061 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 19:26:01,061 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 19:26:01,061 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 19:26:01,061 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 19:26:01,061 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-09 19:26:01,062 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-09 19:26:01,062 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-12-09 19:26:01,062 INFO L262 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-12-09 19:26:01,062 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-09 19:26:01,062 INFO L262 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-12-09 19:26:01,062 INFO L262 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-12-09 19:26:01,062 INFO L262 CegarLoopResult]: For program point L4(lines 4 20) no Hoare annotation was computed. [2020-12-09 19:26:01,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:26:01 BoogieIcfgContainer [2020-12-09 19:26:01,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:26:01,066 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:26:01,066 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:26:01,066 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:26:01,066 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:26:00" (3/4) ... [2020-12-09 19:26:01,068 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 19:26:01,075 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 19:26:01,075 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 19:26:01,075 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 19:26:01,075 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 19:26:01,097 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_125a7984-38b5-469e-b933-3c78e048838d/bin/utaipan/witness.graphml [2020-12-09 19:26:01,097 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:26:01,098 INFO L168 Benchmark]: Toolchain (without parser) took 1848.28 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 54.5 MB in the beginning and 64.7 MB in the end (delta: -10.3 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2020-12-09 19:26:01,099 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 69.2 MB. Free memory is still 51.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:26:01,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 158.19 ms. Allocated memory is still 69.2 MB. Free memory was 54.3 MB in the beginning and 53.5 MB in the end (delta: 777.7 kB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-12-09 19:26:01,099 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.69 ms. Allocated memory is still 69.2 MB. Free memory was 53.3 MB in the beginning and 52.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:26:01,100 INFO L168 Benchmark]: Boogie Preprocessor took 16.30 ms. Allocated memory is still 69.2 MB. Free memory was 52.0 MB in the beginning and 50.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:26:01,100 INFO L168 Benchmark]: RCFGBuilder took 824.13 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 39.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:26:01,101 INFO L168 Benchmark]: TraceAbstraction took 785.48 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 39.4 MB in the beginning and 67.2 MB in the end (delta: -27.8 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-12-09 19:26:01,101 INFO L168 Benchmark]: Witness Printer took 31.21 ms. Allocated memory is still 100.7 MB. Free memory was 66.8 MB in the beginning and 64.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:26:01,103 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 69.2 MB. Free memory is still 51.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 158.19 ms. Allocated memory is still 69.2 MB. Free memory was 54.3 MB in the beginning and 53.5 MB in the end (delta: 777.7 kB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.69 ms. Allocated memory is still 69.2 MB. Free memory was 53.3 MB in the beginning and 52.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.30 ms. Allocated memory is still 69.2 MB. Free memory was 52.0 MB in the beginning and 50.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 824.13 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 39.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 785.48 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 39.4 MB in the beginning and 67.2 MB in the end (delta: -27.8 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Witness Printer took 31.21 ms. Allocated memory is still 100.7 MB. Free memory was 66.8 MB in the beginning and 64.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 4 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, 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, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 3 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 proved your program to be correct! Received shutdown request...