./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_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI --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_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI --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 [2021-10-11 02:24:06,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:06,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:06,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:06,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:06,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:06,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:06,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:06,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:06,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:06,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:06,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:06,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:06,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:06,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:06,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:06,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:06,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:06,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:06,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:06,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:06,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:06,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:06,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:06,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:06,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:06,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:06,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:06,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:06,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:06,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:06,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:06,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:06,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:06,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:06,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:06,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:06,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:06,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:06,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:06,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:06,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:24:06,661 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:06,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:06,663 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:06,663 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:06,663 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:06,664 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:06,664 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:24:06,664 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:06,664 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:06,665 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:24:06,672 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:24:06,672 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:06,672 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:24:06,673 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:24:06,673 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:24:06,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:06,674 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:24:06,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:24:06,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:24:06,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:06,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:06,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:06,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:06,683 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:24:06,683 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:24:06,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:06,684 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:06,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:06,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:06,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:06,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:06,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:06,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:06,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:06,689 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:24:06,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:24:06,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:06,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:06,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:06,690 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_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9558f99275cc5124f556ee48cb271fffdec36102 [2021-10-11 02:24:06,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:06,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:06,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:06,994 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:06,995 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:06,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/floats-cbmc-regression/float1.c [2021-10-11 02:24:07,070 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/data/3881ca398/b5f84f6688264e129ea91850134bb647/FLAG1ed77b9f6 [2021-10-11 02:24:07,502 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:07,503 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/sv-benchmarks/c/floats-cbmc-regression/float1.c [2021-10-11 02:24:07,510 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/data/3881ca398/b5f84f6688264e129ea91850134bb647/FLAG1ed77b9f6 [2021-10-11 02:24:07,912 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/data/3881ca398/b5f84f6688264e129ea91850134bb647 [2021-10-11 02:24:07,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:24:07,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:24:07,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:07,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:24:07,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:24:07,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:07" (1/1) ... [2021-10-11 02:24:07,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@115cba17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:07, skipping insertion in model container [2021-10-11 02:24:07,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:07" (1/1) ... [2021-10-11 02:24:07,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:24:07,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:08,104 WARN L226 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_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2021-10-11 02:24:08,109 WARN L226 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_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2021-10-11 02:24:08,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:08,121 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:24:08,136 WARN L226 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_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2021-10-11 02:24:08,137 WARN L226 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_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2021-10-11 02:24:08,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:08,168 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:24:08,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:08 WrapperNode [2021-10-11 02:24:08,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:08,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:08,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:24:08,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:24:08,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:08" (1/1) ... [2021-10-11 02:24:08,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:08" (1/1) ... [2021-10-11 02:24:08,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:08,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:24:08,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:24:08,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:24:08,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:08" (1/1) ... [2021-10-11 02:24:08,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:08" (1/1) ... [2021-10-11 02:24:08,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:08" (1/1) ... [2021-10-11 02:24:08,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:08" (1/1) ... [2021-10-11 02:24:08,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:08" (1/1) ... [2021-10-11 02:24:08,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:08" (1/1) ... [2021-10-11 02:24:08,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:08" (1/1) ... [2021-10-11 02:24:08,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:24:08,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:24:08,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:24:08,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:24:08,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:08" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:24:08,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:24:08,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:24:08,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:24:08,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:24:08,512 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:24:08,512 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 02:24:08,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:08 BoogieIcfgContainer [2021-10-11 02:24:08,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:24:08,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:24:08,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:24:08,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:24:08,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:07" (1/3) ... [2021-10-11 02:24:08,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8dca36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:08, skipping insertion in model container [2021-10-11 02:24:08,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:08" (2/3) ... [2021-10-11 02:24:08,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8dca36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:08, skipping insertion in model container [2021-10-11 02:24:08,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:08" (3/3) ... [2021-10-11 02:24:08,555 INFO L111 eAbstractionObserver]: Analyzing ICFG float1.c [2021-10-11 02:24:08,585 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:24:08,589 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:24:08,617 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:24:08,641 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:24:08,641 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:24:08,641 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:24:08,641 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:24:08,641 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:24:08,642 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:24:08,642 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:24:08,642 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:24:08,655 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2021-10-11 02:24:08,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:24:08,660 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:08,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:24:08,661 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:08,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:08,683 INFO L82 PathProgramCache]: Analyzing trace with hash 51094, now seen corresponding path program 1 times [2021-10-11 02:24:08,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:08,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468955325] [2021-10-11 02:24:08,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:24:08,791 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:24:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:24:08,809 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:24:08,827 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:24:08,828 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:24:08,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:24:08,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:08 BoogieIcfgContainer [2021-10-11 02:24:08,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:08,853 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:08,853 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:08,854 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:08,854 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:08" (3/4) ... [2021-10-11 02:24:08,858 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:24:08,858 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:08,861 INFO L168 Benchmark]: Toolchain (without parser) took 943.77 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 52.3 MB in the beginning and 58.5 MB in the end (delta: -6.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:08,861 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory was 68.6 MB in the beginning and 68.6 MB in the end (delta: 41.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:08,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.62 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 52.1 MB in the beginning and 84.5 MB in the end (delta: -32.4 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:08,863 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.96 ms. Allocated memory is still 107.0 MB. Free memory was 84.5 MB in the beginning and 83.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:08,864 INFO L168 Benchmark]: Boogie Preprocessor took 20.54 ms. Allocated memory is still 107.0 MB. Free memory was 83.1 MB in the beginning and 82.1 MB in the end (delta: 930.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:08,865 INFO L168 Benchmark]: RCFGBuilder took 301.10 ms. Allocated memory is still 107.0 MB. Free memory was 82.1 MB in the beginning and 70.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:08,866 INFO L168 Benchmark]: TraceAbstraction took 320.84 ms. Allocated memory is still 107.0 MB. Free memory was 70.1 MB in the beginning and 58.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:08,866 INFO L168 Benchmark]: Witness Printer took 5.21 ms. Allocated memory is still 107.0 MB. Free memory was 58.7 MB in the beginning and 58.5 MB in the end (delta: 213.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:08,870 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory was 68.6 MB in the beginning and 68.6 MB in the end (delta: 41.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 252.62 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 52.1 MB in the beginning and 84.5 MB in the end (delta: -32.4 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.96 ms. Allocated memory is still 107.0 MB. Free memory was 84.5 MB in the beginning and 83.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.54 ms. Allocated memory is still 107.0 MB. Free memory was 83.1 MB in the beginning and 82.1 MB in the end (delta: 930.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 301.10 ms. Allocated memory is still 107.0 MB. Free memory was 82.1 MB in the beginning and 70.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 320.84 ms. Allocated memory is still 107.0 MB. Free memory was 70.1 MB in the beginning and 58.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.21 ms. Allocated memory is still 107.0 MB. Free memory was 58.7 MB in the beginning and 58.5 MB in the end (delta: 213.5 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 [2021-10-11 02:24:11,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:11,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:11,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:11,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:11,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:11,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:11,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:11,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:11,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:11,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:11,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:11,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:11,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:11,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:11,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:11,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:11,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:11,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:11,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:11,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:11,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:11,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:11,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:11,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:11,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:11,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:11,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:11,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:11,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:11,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:11,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:11,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:11,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:11,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:11,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:11,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:11,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:11,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:11,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:11,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:11,607 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:24:11,652 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:11,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:11,654 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:11,654 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:11,655 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:11,655 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:11,655 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:11,655 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:11,655 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:11,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:11,658 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:24:11,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:24:11,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:11,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:11,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:11,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:11,659 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:24:11,659 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:24:11,660 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:24:11,660 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:24:11,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:11,660 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:11,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:11,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:11,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:24:11,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:11,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:11,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:11,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:11,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:11,662 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:24:11,662 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:24:11,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:11,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:11,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:11,663 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_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9558f99275cc5124f556ee48cb271fffdec36102 [2021-10-11 02:24:12,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:12,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:12,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:12,099 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:12,100 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:12,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/floats-cbmc-regression/float1.c [2021-10-11 02:24:12,179 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/data/c3dfcd6aa/e1ea8bcf03544f209455e3319d2c20fc/FLAG85d0eeafc [2021-10-11 02:24:12,654 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:12,654 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/sv-benchmarks/c/floats-cbmc-regression/float1.c [2021-10-11 02:24:12,662 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/data/c3dfcd6aa/e1ea8bcf03544f209455e3319d2c20fc/FLAG85d0eeafc [2021-10-11 02:24:13,014 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/data/c3dfcd6aa/e1ea8bcf03544f209455e3319d2c20fc [2021-10-11 02:24:13,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:24:13,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:24:13,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:13,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:24:13,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:24:13,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:13" (1/1) ... [2021-10-11 02:24:13,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6afe9e14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:13, skipping insertion in model container [2021-10-11 02:24:13,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:13" (1/1) ... [2021-10-11 02:24:13,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:24:13,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:13,183 WARN L226 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_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2021-10-11 02:24:13,187 WARN L226 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_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2021-10-11 02:24:13,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:13,202 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:24:13,215 WARN L226 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_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2021-10-11 02:24:13,216 WARN L226 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_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2021-10-11 02:24:13,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:13,231 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:24:13,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:13 WrapperNode [2021-10-11 02:24:13,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:13,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:13,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:24:13,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:24:13,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:13" (1/1) ... [2021-10-11 02:24:13,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:13" (1/1) ... [2021-10-11 02:24:13,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:13,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:24:13,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:24:13,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:24:13,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:13" (1/1) ... [2021-10-11 02:24:13,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:13" (1/1) ... [2021-10-11 02:24:13,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:13" (1/1) ... [2021-10-11 02:24:13,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:13" (1/1) ... [2021-10-11 02:24:13,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:13" (1/1) ... [2021-10-11 02:24:13,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:13" (1/1) ... [2021-10-11 02:24:13,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:13" (1/1) ... [2021-10-11 02:24:13,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:24:13,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:24:13,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:24:13,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:24:13,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:13" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:24:13,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:24:13,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:24:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:24:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:24:14,840 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:24:14,841 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 02:24:14,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:14 BoogieIcfgContainer [2021-10-11 02:24:14,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:24:14,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:24:14,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:24:14,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:24:14,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:13" (1/3) ... [2021-10-11 02:24:14,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500f142a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:14, skipping insertion in model container [2021-10-11 02:24:14,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:13" (2/3) ... [2021-10-11 02:24:14,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500f142a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:14, skipping insertion in model container [2021-10-11 02:24:14,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:14" (3/3) ... [2021-10-11 02:24:14,852 INFO L111 eAbstractionObserver]: Analyzing ICFG float1.c [2021-10-11 02:24:14,867 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:24:14,870 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:24:14,882 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:24:14,909 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:24:14,909 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:24:14,909 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:24:14,910 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:24:14,910 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:24:14,910 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:24:14,910 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:24:14,911 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:24:14,924 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2021-10-11 02:24:14,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:24:14,929 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:14,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:24:14,930 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:14,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:14,937 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-11 02:24:14,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:24:14,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412425379] [2021-10-11 02:24:14,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:24:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:15,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:24:15,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:15,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:15,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:24:15,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412425379] [2021-10-11 02:24:15,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:15,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:15,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040743617] [2021-10-11 02:24:15,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:15,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:24:15,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:15,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:15,257 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2021-10-11 02:24:15,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:15,689 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-10-11 02:24:15,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:15,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2021-10-11 02:24:15,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:15,698 INFO L225 Difference]: With dead ends: 17 [2021-10-11 02:24:15,698 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:24:15,701 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 [2021-10-11 02:24:15,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:24:15,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:24:15,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:24:15,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:24:15,727 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-10-11 02:24:15,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:15,728 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:24:15,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:15,728 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:24:15,728 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:24:15,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:24:15,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:24:15,947 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:24:15,948 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 02:24:15,948 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:24:15,948 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 02:24:15,948 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:24:15,948 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-11 02:24:15,948 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-11 02:24:15,948 INFO L262 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-11 02:24:15,950 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-11 02:24:15,950 INFO L262 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-10-11 02:24:15,951 INFO L262 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-10-11 02:24:15,951 INFO L262 CegarLoopResult]: For program point L4(lines 4 20) no Hoare annotation was computed. [2021-10-11 02:24:15,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:15 BoogieIcfgContainer [2021-10-11 02:24:15,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:15,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:15,960 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:15,960 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:15,961 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:14" (3/4) ... [2021-10-11 02:24:15,964 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:24:15,978 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 02:24:15,978 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:24:15,979 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:24:15,979 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:24:16,030 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc6ef5b-1a86-4596-b135-cb5e1a153cba/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:24:16,030 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:16,031 INFO L168 Benchmark]: Toolchain (without parser) took 3012.55 ms. Allocated memory is still 58.7 MB. Free memory was 39.0 MB in the beginning and 24.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:16,032 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 58.7 MB. Free memory is still 39.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:16,032 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.66 ms. Allocated memory is still 58.7 MB. Free memory was 38.8 MB in the beginning and 29.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:16,033 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.00 ms. Allocated memory is still 58.7 MB. Free memory was 28.9 MB in the beginning and 43.3 MB in the end (delta: -14.4 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:16,033 INFO L168 Benchmark]: Boogie Preprocessor took 49.70 ms. Allocated memory is still 58.7 MB. Free memory was 43.1 MB in the beginning and 42.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:16,034 INFO L168 Benchmark]: RCFGBuilder took 1510.62 ms. Allocated memory is still 58.7 MB. Free memory was 42.0 MB in the beginning and 31.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:16,035 INFO L168 Benchmark]: TraceAbstraction took 1112.44 ms. Allocated memory is still 58.7 MB. Free memory was 30.5 MB in the beginning and 26.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:16,035 INFO L168 Benchmark]: Witness Printer took 70.11 ms. Allocated memory is still 58.7 MB. Free memory was 26.4 MB in the beginning and 24.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:16,047 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 58.7 MB. Free memory is still 39.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 213.66 ms. Allocated memory is still 58.7 MB. Free memory was 38.8 MB in the beginning and 29.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.00 ms. Allocated memory is still 58.7 MB. Free memory was 28.9 MB in the beginning and 43.3 MB in the end (delta: -14.4 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.70 ms. Allocated memory is still 58.7 MB. Free memory was 43.1 MB in the beginning and 42.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1510.62 ms. Allocated memory is still 58.7 MB. Free memory was 42.0 MB in the beginning and 31.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1112.44 ms. Allocated memory is still 58.7 MB. Free memory was 30.5 MB in the beginning and 26.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Witness Printer took 70.11 ms. Allocated memory is still 58.7 MB. Free memory was 26.4 MB in the beginning and 24.3 MB in the end (delta: 2.2 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: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.4s, 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, 0.3s 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, 0.1s 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...