./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw --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 213c24ef3c7753bf19a615c5715fd8340a45826778b0f8f910dadd2d17208462 ............................................................................................................................................................................................................................................................................................................. 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_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw --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 213c24ef3c7753bf19a615c5715fd8340a45826778b0f8f910dadd2d17208462 .............................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:20:19,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:20:19,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:20:19,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:20:19,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:20:19,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:20:19,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:20:19,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:20:19,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:20:19,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:20:19,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:20:19,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:20:19,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:20:19,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:20:19,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:20:19,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:20:19,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:20:19,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:20:19,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:20:19,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:20:19,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:20:19,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:20:19,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:20:19,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:20:19,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:20:19,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:20:19,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:20:19,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:20:19,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:20:19,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:20:19,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:20:19,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:20:19,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:20:19,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:20:19,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:20:19,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:20:19,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:20:19,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:20:19,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:20:19,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:20:19,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:20:19,740 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 05:20:19,793 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:20:19,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:20:19,795 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:20:19,795 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:20:19,795 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:20:19,795 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:20:19,796 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:20:19,802 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:20:19,802 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:20:19,803 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:20:19,804 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:20:19,804 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:20:19,804 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:20:19,805 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:20:19,805 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:20:19,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:20:19,806 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:20:19,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:20:19,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:20:19,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:20:19,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:20:19,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:20:19,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:20:19,808 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:20:19,808 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:20:19,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:20:19,808 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:20:19,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:20:19,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:20:19,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:20:19,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:20:19,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:20:19,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:20:19,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:20:19,812 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:20:19,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:20:19,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:20:19,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:20:19,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:20:19,814 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_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 213c24ef3c7753bf19a615c5715fd8340a45826778b0f8f910dadd2d17208462 [2021-10-20 05:20:20,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:20:20,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:20:20,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:20:20,155 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:20:20,156 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:20:20,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2021-10-20 05:20:20,272 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/data/cccc8d1bf/ade0108d69ed43db95a3b5befdcfbf49/FLAG6f68f4478 [2021-10-20 05:20:20,741 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:20:20,742 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2021-10-20 05:20:20,749 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/data/cccc8d1bf/ade0108d69ed43db95a3b5befdcfbf49/FLAG6f68f4478 [2021-10-20 05:20:21,120 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/data/cccc8d1bf/ade0108d69ed43db95a3b5befdcfbf49 [2021-10-20 05:20:21,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:20:21,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:20:21,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:20:21,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:20:21,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:20:21,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:20:21" (1/1) ... [2021-10-20 05:20:21,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f2f256e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:21, skipping insertion in model container [2021-10-20 05:20:21,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:20:21" (1/1) ... [2021-10-20 05:20:21,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:20:21,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:20:21,392 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/sv-benchmarks/c/float-newlib/float_req_bl_0710.c[1961,1974] [2021-10-20 05:20:21,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:20:21,429 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:20:21,486 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/sv-benchmarks/c/float-newlib/float_req_bl_0710.c[1961,1974] [2021-10-20 05:20:21,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:20:21,506 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:20:21,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:21 WrapperNode [2021-10-20 05:20:21,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:20:21,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:20:21,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:20:21,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:20:21,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:21" (1/1) ... [2021-10-20 05:20:21,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:21" (1/1) ... [2021-10-20 05:20:21,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:20:21,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:20:21,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:20:21,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:20:21,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:21" (1/1) ... [2021-10-20 05:20:21,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:21" (1/1) ... [2021-10-20 05:20:21,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:21" (1/1) ... [2021-10-20 05:20:21,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:21" (1/1) ... [2021-10-20 05:20:21,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:21" (1/1) ... [2021-10-20 05:20:21,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:21" (1/1) ... [2021-10-20 05:20:21,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:21" (1/1) ... [2021-10-20 05:20:21,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:20:21,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:20:21,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:20:21,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:20:21,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:21" (1/1) ... [2021-10-20 05:20:21,645 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:20:21,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:20:21,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:20:21,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:20:21,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 05:20:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:20:21,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-20 05:20:21,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-20 05:20:21,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-20 05:20:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:20:21,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:20:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-20 05:20:21,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 05:20:22,342 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:20:22,342 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-20 05:20:22,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:20:22 BoogieIcfgContainer [2021-10-20 05:20:22,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:20:22,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:20:22,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:20:22,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:20:22,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:20:21" (1/3) ... [2021-10-20 05:20:22,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fe8915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:20:22, skipping insertion in model container [2021-10-20 05:20:22,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:21" (2/3) ... [2021-10-20 05:20:22,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fe8915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:20:22, skipping insertion in model container [2021-10-20 05:20:22,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:20:22" (3/3) ... [2021-10-20 05:20:22,357 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0710.c [2021-10-20 05:20:22,363 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:20:22,363 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 05:20:22,414 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:20:22,421 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 05:20:22,421 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 05:20:22,436 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.65) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:20:22,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-20 05:20:22,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:20:22,442 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:20:22,443 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:20:22,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:20:22,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1228239283, now seen corresponding path program 1 times [2021-10-20 05:20:22,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:20:22,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265346370] [2021-10-20 05:20:22,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:20:22,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:20:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:20:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:20:22,683 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:20:22,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265346370] [2021-10-20 05:20:22,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265346370] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:20:22,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:20:22,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 05:20:22,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483205345] [2021-10-20 05:20:22,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-20 05:20:22,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:20:22,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-20 05:20:22,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:20:22,714 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.65) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:20:22,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:20:22,735 INFO L93 Difference]: Finished difference Result 42 states and 63 transitions. [2021-10-20 05:20:22,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-20 05:20:22,738 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-20 05:20:22,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:20:22,747 INFO L225 Difference]: With dead ends: 42 [2021-10-20 05:20:22,748 INFO L226 Difference]: Without dead ends: 19 [2021-10-20 05:20:22,751 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:20:22,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-20 05:20:22,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-20 05:20:22,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:20:22,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2021-10-20 05:20:22,786 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 8 [2021-10-20 05:20:22,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:20:22,787 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-10-20 05:20:22,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:20:22,787 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2021-10-20 05:20:22,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-20 05:20:22,788 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:20:22,788 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:20:22,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 05:20:22,789 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:20:22,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:20:22,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1648939227, now seen corresponding path program 1 times [2021-10-20 05:20:22,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:20:22,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733972665] [2021-10-20 05:20:22,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:20:22,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:20:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:20:22,856 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 05:20:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:20:22,956 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-20 05:20:22,956 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 05:20:22,958 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:20:22,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 05:20:22,966 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:20:22,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:20:22 BoogieIcfgContainer [2021-10-20 05:20:22,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:20:22,989 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:20:22,989 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:20:22,990 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:20:22,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:20:22" (3/4) ... [2021-10-20 05:20:22,994 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-20 05:20:22,994 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:20:22,995 INFO L168 Benchmark]: Toolchain (without parser) took 1868.33 ms. Allocated memory was 81.8 MB in the beginning and 111.1 MB in the end (delta: 29.4 MB). Free memory was 47.8 MB in the beginning and 69.7 MB in the end (delta: -21.8 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:20:22,996 INFO L168 Benchmark]: CDTParser took 17.59 ms. Allocated memory is still 81.8 MB. Free memory was 60.8 MB in the beginning and 64.0 MB in the end (delta: -3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:20:22,997 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.33 ms. Allocated memory was 81.8 MB in the beginning and 111.1 MB in the end (delta: 29.4 MB). Free memory was 47.7 MB in the beginning and 87.3 MB in the end (delta: -39.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-20 05:20:22,998 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.35 ms. Allocated memory is still 111.1 MB. Free memory was 87.3 MB in the beginning and 85.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:20:22,998 INFO L168 Benchmark]: Boogie Preprocessor took 60.50 ms. Allocated memory is still 111.1 MB. Free memory was 85.3 MB in the beginning and 84.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:20:22,999 INFO L168 Benchmark]: RCFGBuilder took 710.13 ms. Allocated memory is still 111.1 MB. Free memory was 84.1 MB in the beginning and 65.5 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-20 05:20:23,000 INFO L168 Benchmark]: TraceAbstraction took 641.24 ms. Allocated memory is still 111.1 MB. Free memory was 65.2 MB in the beginning and 70.1 MB in the end (delta: -4.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:20:23,000 INFO L168 Benchmark]: Witness Printer took 4.59 ms. Allocated memory is still 111.1 MB. Free memory was 70.1 MB in the beginning and 69.7 MB in the end (delta: 427.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:20:23,004 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 17.59 ms. Allocated memory is still 81.8 MB. Free memory was 60.8 MB in the beginning and 64.0 MB in the end (delta: -3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 376.33 ms. Allocated memory was 81.8 MB in the beginning and 111.1 MB in the end (delta: 29.4 MB). Free memory was 47.7 MB in the beginning and 87.3 MB in the end (delta: -39.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.35 ms. Allocated memory is still 111.1 MB. Free memory was 87.3 MB in the beginning and 85.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.50 ms. Allocated memory is still 111.1 MB. Free memory was 85.3 MB in the beginning and 84.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 710.13 ms. Allocated memory is still 111.1 MB. Free memory was 84.1 MB in the beginning and 65.5 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 641.24 ms. Allocated memory is still 111.1 MB. Free memory was 65.2 MB in the beginning and 70.1 MB in the end (delta: -4.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.59 ms. Allocated memory is still 111.1 MB. Free memory was 70.1 MB in the beginning and 69.7 MB in the end (delta: 427.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 100]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 15, overapproximation of bitwiseAnd at line 29, overapproximation of someBinaryArithmeticFLOAToperation at line 32. Possible FailurePath: [L17] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L93] float x = __VERIFIER_nondet_float(); [L94] COND TRUE x < -0.0f [L20] float z; [L21] __uint32_t r, hx; [L22] __int32_t ix, s, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (ix) = gf_u.word [L29] hx = ix & 0x7fffffff VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L31] COND TRUE !((hx) < 0x7f800000L) [L32] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L96] float res = __ieee754_sqrtf(x); [L15] return x != x; [L99] COND TRUE !isnan_float(res) [L100] reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 552.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.2ms, AutomataDifference: 58.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.3ms SsaConstructionTime, 88.1ms SatisfiabilityAnalysisTime, 67.7ms InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 could not prove your program: unable to determine feasibility of some traces [2021-10-20 05:20:23,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:20:25,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:20:25,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:20:25,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:20:25,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:20:25,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:20:25,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:20:25,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:20:25,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:20:25,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:20:25,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:20:25,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:20:25,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:20:25,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:20:25,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:20:25,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:20:25,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:20:25,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:20:25,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:20:25,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:20:25,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:20:25,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:20:25,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:20:25,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:20:25,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:20:25,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:20:25,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:20:25,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:20:25,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:20:25,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:20:25,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:20:25,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:20:25,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:20:25,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:20:25,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:20:25,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:20:25,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:20:25,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:20:25,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:20:25,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:20:25,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:20:25,763 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-20 05:20:25,811 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:20:25,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:20:25,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:20:25,812 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:20:25,812 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:20:25,812 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:20:25,812 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:20:25,813 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:20:25,813 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:20:25,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:20:25,814 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:20:25,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:20:25,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:20:25,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:20:25,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:20:25,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:20:25,815 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:20:25,816 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-20 05:20:25,816 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-20 05:20:25,816 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:20:25,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:20:25,816 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:20:25,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:20:25,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:20:25,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-20 05:20:25,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:20:25,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:20:25,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:20:25,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:20:25,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:20:25,819 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-20 05:20:25,819 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-20 05:20:25,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:20:25,819 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:20:25,820 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:20:25,820 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_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 213c24ef3c7753bf19a615c5715fd8340a45826778b0f8f910dadd2d17208462 [2021-10-20 05:20:26,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:20:26,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:20:26,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:20:26,228 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:20:26,229 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:20:26,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2021-10-20 05:20:26,313 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/data/e5b16ea37/3a33734c88114c59b21d1980ec0c4223/FLAG98fc91ed2 [2021-10-20 05:20:26,946 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:20:26,947 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2021-10-20 05:20:26,961 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/data/e5b16ea37/3a33734c88114c59b21d1980ec0c4223/FLAG98fc91ed2 [2021-10-20 05:20:27,275 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/data/e5b16ea37/3a33734c88114c59b21d1980ec0c4223 [2021-10-20 05:20:27,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:20:27,279 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:20:27,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:20:27,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:20:27,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:20:27,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:20:27" (1/1) ... [2021-10-20 05:20:27,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2ba4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:27, skipping insertion in model container [2021-10-20 05:20:27,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:20:27" (1/1) ... [2021-10-20 05:20:27,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:20:27,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:20:27,478 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/sv-benchmarks/c/float-newlib/float_req_bl_0710.c[1961,1974] [2021-10-20 05:20:27,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:20:27,496 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:20:27,534 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/sv-benchmarks/c/float-newlib/float_req_bl_0710.c[1961,1974] [2021-10-20 05:20:27,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:20:27,590 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:20:27,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:27 WrapperNode [2021-10-20 05:20:27,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:20:27,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:20:27,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:20:27,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:20:27,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:27" (1/1) ... [2021-10-20 05:20:27,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:27" (1/1) ... [2021-10-20 05:20:27,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:20:27,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:20:27,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:20:27,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:20:27,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:27" (1/1) ... [2021-10-20 05:20:27,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:27" (1/1) ... [2021-10-20 05:20:27,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:27" (1/1) ... [2021-10-20 05:20:27,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:27" (1/1) ... [2021-10-20 05:20:27,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:27" (1/1) ... [2021-10-20 05:20:27,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:27" (1/1) ... [2021-10-20 05:20:27,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:27" (1/1) ... [2021-10-20 05:20:27,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:20:27,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:20:27,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:20:27,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:20:27,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:27" (1/1) ... [2021-10-20 05:20:27,711 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:20:27,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:20:27,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:20:27,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:20:27,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-20 05:20:27,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:20:27,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-20 05:20:27,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-20 05:20:27,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:20:27,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:20:27,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-20 05:20:27,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-20 05:20:27,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 05:20:28,715 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:20:28,715 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-20 05:20:28,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:20:28 BoogieIcfgContainer [2021-10-20 05:20:28,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:20:28,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:20:28,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:20:28,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:20:28,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:20:27" (1/3) ... [2021-10-20 05:20:28,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300dba98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:20:28, skipping insertion in model container [2021-10-20 05:20:28,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:20:27" (2/3) ... [2021-10-20 05:20:28,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300dba98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:20:28, skipping insertion in model container [2021-10-20 05:20:28,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:20:28" (3/3) ... [2021-10-20 05:20:28,725 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0710.c [2021-10-20 05:20:28,731 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:20:28,731 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 05:20:28,796 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:20:28,801 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 05:20:28,801 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 05:20:28,816 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.606060606060606) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:20:28,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-20 05:20:28,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:20:28,823 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:20:28,823 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:20:28,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:20:28,829 INFO L82 PathProgramCache]: Analyzing trace with hash 860611220, now seen corresponding path program 1 times [2021-10-20 05:20:28,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:20:28,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718865060] [2021-10-20 05:20:28,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:20:28,844 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:20:28,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:20:28,847 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:20:28,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-20 05:20:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:20:29,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-20 05:20:29,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:20:29,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:20:29,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:20:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:20:29,130 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:20:29,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718865060] [2021-10-20 05:20:29,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718865060] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:20:29,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:20:29,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-20 05:20:29,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332443606] [2021-10-20 05:20:29,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-20 05:20:29,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:20:29,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-20 05:20:29,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:20:29,156 INFO L87 Difference]: Start difference. First operand has 35 states, 33 states have (on average 1.606060606060606) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:20:29,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:20:29,174 INFO L93 Difference]: Finished difference Result 67 states and 102 transitions. [2021-10-20 05:20:29,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-20 05:20:29,177 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-20 05:20:29,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:20:29,186 INFO L225 Difference]: With dead ends: 67 [2021-10-20 05:20:29,186 INFO L226 Difference]: Without dead ends: 31 [2021-10-20 05:20:29,189 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:20:29,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-20 05:20:29,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-10-20 05:20:29,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:20:29,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2021-10-20 05:20:29,240 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 10 [2021-10-20 05:20:29,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:20:29,240 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2021-10-20 05:20:29,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:20:29,241 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2021-10-20 05:20:29,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-20 05:20:29,242 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:20:29,242 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:20:29,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-20 05:20:29,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:20:29,463 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:20:29,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:20:29,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1279985196, now seen corresponding path program 1 times [2021-10-20 05:20:29,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:20:29,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666600065] [2021-10-20 05:20:29,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:20:29,466 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:20:29,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:20:29,468 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:20:29,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-20 05:20:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:20:29,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-20 05:20:29,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:20:38,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:20:38,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:21:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:21:27,570 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:21:27,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666600065] [2021-10-20 05:21:27,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666600065] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:21:27,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:21:27,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-10-20 05:21:27,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180873577] [2021-10-20 05:21:27,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-20 05:21:27,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:21:27,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-20 05:21:27,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=167, Unknown=2, NotChecked=0, Total=210 [2021-10-20 05:21:27,575 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:21:57,635 WARN L207 SmtUtils]: Spent 9.54 s on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2021-10-20 05:22:00,965 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-20 05:22:00,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-20 05:22:00,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-20 05:22:01,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:22:01,174 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:662) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:881) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:778) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 35 more [2021-10-20 05:22:01,177 INFO L168 Benchmark]: Toolchain (without parser) took 93897.28 ms. Allocated memory was 62.9 MB in the beginning and 86.0 MB in the end (delta: 23.1 MB). Free memory was 42.6 MB in the beginning and 63.2 MB in the end (delta: -20.5 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. [2021-10-20 05:22:01,178 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 62.9 MB. Free memory is still 44.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:22:01,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.36 ms. Allocated memory is still 62.9 MB. Free memory was 42.4 MB in the beginning and 46.1 MB in the end (delta: -3.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-20 05:22:01,180 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.92 ms. Allocated memory is still 62.9 MB. Free memory was 45.9 MB in the beginning and 44.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:22:01,180 INFO L168 Benchmark]: Boogie Preprocessor took 37.38 ms. Allocated memory is still 62.9 MB. Free memory was 44.2 MB in the beginning and 42.5 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:22:01,181 INFO L168 Benchmark]: RCFGBuilder took 1017.40 ms. Allocated memory is still 62.9 MB. Free memory was 42.5 MB in the beginning and 29.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-20 05:22:01,182 INFO L168 Benchmark]: TraceAbstraction took 92457.28 ms. Allocated memory was 62.9 MB in the beginning and 86.0 MB in the end (delta: 23.1 MB). Free memory was 29.3 MB in the beginning and 63.2 MB in the end (delta: -33.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:22:01,187 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 62.9 MB. Free memory is still 44.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 310.36 ms. Allocated memory is still 62.9 MB. Free memory was 42.4 MB in the beginning and 46.1 MB in the end (delta: -3.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.92 ms. Allocated memory is still 62.9 MB. Free memory was 45.9 MB in the beginning and 44.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.38 ms. Allocated memory is still 62.9 MB. Free memory was 44.2 MB in the beginning and 42.5 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1017.40 ms. Allocated memory is still 62.9 MB. Free memory was 42.5 MB in the beginning and 29.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 92457.28 ms. Allocated memory was 62.9 MB in the beginning and 86.0 MB in the end (delta: 23.1 MB). Free memory was 29.3 MB in the beginning and 63.2 MB in the end (delta: -33.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4ca8fe-5813-489d-9ed1-f60f913c0615/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...