./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0620a.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_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE --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 0682c5b0aa15583147a7e08f281b31c84f28e6f8db41872cc8e834f12ff21a47 .................................................................................................................................................................................................................................................................................................................................... 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_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE --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 0682c5b0aa15583147a7e08f281b31c84f28e6f8db41872cc8e834f12ff21a47 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:40:49,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:40:49,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:40:49,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:40:49,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:40:49,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:40:49,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:40:49,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:40:49,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:40:49,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:40:49,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:40:49,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:40:49,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:40:49,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:40:49,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:40:49,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:40:49,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:40:49,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:40:49,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:40:49,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:40:49,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:40:49,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:40:49,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:40:49,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:40:49,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:40:49,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:40:49,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:40:49,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:40:49,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:40:49,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:40:49,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:40:49,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:40:49,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:40:49,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:40:49,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:40:49,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:40:49,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:40:49,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:40:49,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:40:49,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:40:49,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:40:49,828 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:40:49,876 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:40:49,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:40:49,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:40:49,879 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:40:49,879 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:40:49,879 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:40:49,880 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:40:49,880 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:40:49,880 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:40:49,880 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:40:49,887 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:40:49,888 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:40:49,888 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:40:49,888 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:40:49,889 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:40:49,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:40:49,890 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:40:49,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:40:49,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:40:49,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:40:49,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:40:49,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:40:49,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:40:49,891 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:40:49,892 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:40:49,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:40:49,892 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:40:49,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:40:49,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:40:49,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:40:49,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:40:49,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:40:49,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:40:49,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:40:49,896 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:40:49,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:40:49,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:40:49,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:40:49,897 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:40:49,897 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_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0682c5b0aa15583147a7e08f281b31c84f28e6f8db41872cc8e834f12ff21a47 [2021-10-24 09:40:50,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:40:50,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:40:50,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:40:50,196 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:40:50,197 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:40:50,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/float-newlib/float_req_bl_0620a.c [2021-10-24 09:40:50,274 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/data/9e5eb2f0e/cf33c09cfcd04ddfab918a61f8ab9273/FLAGe75474f52 [2021-10-24 09:40:50,717 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:40:50,718 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c [2021-10-24 09:40:50,725 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/data/9e5eb2f0e/cf33c09cfcd04ddfab918a61f8ab9273/FLAGe75474f52 [2021-10-24 09:40:51,105 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/data/9e5eb2f0e/cf33c09cfcd04ddfab918a61f8ab9273 [2021-10-24 09:40:51,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:40:51,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:40:51,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:40:51,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:40:51,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:40:51,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:40:51" (1/1) ... [2021-10-24 09:40:51,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2e97d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:51, skipping insertion in model container [2021-10-24 09:40:51,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:40:51" (1/1) ... [2021-10-24 09:40:51,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:40:51,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:40:51,340 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_74956193-8dde-42ab-9a3c-2c7909267dcf/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c[3328,3341] [2021-10-24 09:40:51,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:40:51,353 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:40:51,389 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_74956193-8dde-42ab-9a3c-2c7909267dcf/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c[3328,3341] [2021-10-24 09:40:51,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:40:51,408 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:40:51,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:51 WrapperNode [2021-10-24 09:40:51,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:40:51,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:40:51,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:40:51,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:40:51,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:51" (1/1) ... [2021-10-24 09:40:51,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:51" (1/1) ... [2021-10-24 09:40:51,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:40:51,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:40:51,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:40:51,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:40:51,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:51" (1/1) ... [2021-10-24 09:40:51,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:51" (1/1) ... [2021-10-24 09:40:51,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:51" (1/1) ... [2021-10-24 09:40:51,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:51" (1/1) ... [2021-10-24 09:40:51,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:51" (1/1) ... [2021-10-24 09:40:51,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:51" (1/1) ... [2021-10-24 09:40:51,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:51" (1/1) ... [2021-10-24 09:40:51,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:40:51,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:40:51,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:40:51,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:40:51,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:51" (1/1) ... [2021-10-24 09:40:51,521 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:40:51,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:40:51,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:40:51,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:40:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:40:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:40:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-24 09:40:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 09:40:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-24 09:40:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:40:51,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:40:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 09:40:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-24 09:40:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 09:40:52,155 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:40:52,155 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-24 09:40:52,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:40:52 BoogieIcfgContainer [2021-10-24 09:40:52,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:40:52,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:40:52,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:40:52,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:40:52,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:40:51" (1/3) ... [2021-10-24 09:40:52,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c03291e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:40:52, skipping insertion in model container [2021-10-24 09:40:52,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:51" (2/3) ... [2021-10-24 09:40:52,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c03291e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:40:52, skipping insertion in model container [2021-10-24 09:40:52,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:40:52" (3/3) ... [2021-10-24 09:40:52,170 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620a.c [2021-10-24 09:40:52,175 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:40:52,175 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:40:52,240 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:40:52,250 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 [2021-10-24 09:40:52,251 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 09:40:52,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 24 states have internal predecessors, (38), 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) [2021-10-24 09:40:52,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 09:40:52,275 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:40:52,276 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:40:52,276 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:40:52,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:40:52,282 INFO L82 PathProgramCache]: Analyzing trace with hash -851122785, now seen corresponding path program 1 times [2021-10-24 09:40:52,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:40:52,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793447881] [2021-10-24 09:40:52,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:40:52,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:40:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:40:52,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:40:52,470 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:40:52,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793447881] [2021-10-24 09:40:52,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793447881] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:40:52,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:40:52,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:40:52,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449346919] [2021-10-24 09:40:52,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 09:40:52,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:40:52,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 09:40:52,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:40:52,505 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 24 states have internal predecessors, (38), 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) [2021-10-24 09:40:52,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:40:52,527 INFO L93 Difference]: Finished difference Result 49 states and 75 transitions. [2021-10-24 09:40:52,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 09:40:52,529 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 [2021-10-24 09:40:52,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:40:52,539 INFO L225 Difference]: With dead ends: 49 [2021-10-24 09:40:52,539 INFO L226 Difference]: Without dead ends: 23 [2021-10-24 09:40:52,542 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 [2021-10-24 09:40:52,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-24 09:40:52,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-24 09:40:52,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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) [2021-10-24 09:40:52,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-10-24 09:40:52,580 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 8 [2021-10-24 09:40:52,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:40:52,580 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-10-24 09:40:52,581 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) [2021-10-24 09:40:52,581 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-10-24 09:40:52,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 09:40:52,582 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:40:52,582 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:40:52,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:40:52,584 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:40:52,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:40:52,587 INFO L82 PathProgramCache]: Analyzing trace with hash 398666666, now seen corresponding path program 1 times [2021-10-24 09:40:52,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:40:52,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691331305] [2021-10-24 09:40:52,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:40:52,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:40:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:40:52,746 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 09:40:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:40:52,870 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 09:40:52,870 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 09:40:52,872 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:40:52,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 09:40:52,880 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:40:52,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:40:52 BoogieIcfgContainer [2021-10-24 09:40:52,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:40:52,945 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:40:52,945 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:40:52,945 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:40:52,946 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:40:52" (3/4) ... [2021-10-24 09:40:52,950 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 09:40:52,950 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:40:52,953 INFO L168 Benchmark]: Toolchain (without parser) took 1841.69 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 57.3 MB in the beginning and 61.0 MB in the end (delta: -3.8 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. [2021-10-24 09:40:52,954 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 92.3 MB. Free memory was 61.5 MB in the beginning and 61.5 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:40:52,956 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.21 ms. Allocated memory is still 92.3 MB. Free memory was 57.1 MB in the beginning and 65.3 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:40:52,958 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.54 ms. Allocated memory is still 92.3 MB. Free memory was 65.3 MB in the beginning and 63.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:40:52,962 INFO L168 Benchmark]: Boogie Preprocessor took 37.50 ms. Allocated memory is still 92.3 MB. Free memory was 63.2 MB in the beginning and 61.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:40:52,964 INFO L168 Benchmark]: RCFGBuilder took 658.07 ms. Allocated memory is still 92.3 MB. Free memory was 61.1 MB in the beginning and 40.6 MB in the end (delta: 20.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-24 09:40:52,965 INFO L168 Benchmark]: TraceAbstraction took 783.63 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 40.1 MB in the beginning and 61.6 MB in the end (delta: -21.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:40:52,965 INFO L168 Benchmark]: Witness Printer took 5.46 ms. Allocated memory is still 111.1 MB. Free memory was 61.6 MB in the beginning and 61.0 MB in the end (delta: 548.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:40:52,973 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 92.3 MB. Free memory was 61.5 MB in the beginning and 61.5 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 298.21 ms. Allocated memory is still 92.3 MB. Free memory was 57.1 MB in the beginning and 65.3 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.54 ms. Allocated memory is still 92.3 MB. Free memory was 65.3 MB in the beginning and 63.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.50 ms. Allocated memory is still 92.3 MB. Free memory was 63.2 MB in the beginning and 61.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 658.07 ms. Allocated memory is still 92.3 MB. Free memory was 61.1 MB in the beginning and 40.6 MB in the end (delta: 20.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 783.63 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 40.1 MB in the beginning and 61.6 MB in the end (delta: -21.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.46 ms. Allocated memory is still 111.1 MB. Free memory was 61.6 MB in the beginning and 61.0 MB in the end (delta: 548.4 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: 144]: 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 143, overapproximation of someUnaryDOUBLEoperation at line 46, overapproximation of bitwiseAnd at line 64, overapproximation of someBinaryArithmeticFLOAToperation at line 67. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L31-L36] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L38-L43] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L45-L49] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L51-L53] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L139] float x = 0.0f; [L56] float w, s1, s2, z; [L57] __int32_t ix, hx, id; VAL [aT_atan={10:0}, atanhi_atan={5:0}, atanlo_atan={11:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (hx) = gf_u.word [L64] ix = hx & 0x7fffffff VAL [aT_atan={10:0}, atanhi_atan={5:0}, atanlo_atan={11:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L65] COND TRUE ix >= 0x50800000 [L66] COND FALSE !(((ix) > 0x7f800000L)) [L68] COND FALSE !(hx > 0) [L71] EXPR atanhi_atan[3] [L71] EXPR atanlo_atan[3] [L71] return -atanhi_atan[3] - atanlo_atan[3]; [L140] float res = atan_float(x); [L143] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [aT_atan={10:0}, atanhi_atan={5:0}, atanlo_atan={11:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L143] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L144] reach_error() VAL [aT_atan={10:0}, atanhi_atan={5:0}, atanlo_atan={11:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 640.3ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.2ms, AutomataDifference: 62.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 29 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=25occurred 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: 22.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.8ms SsaConstructionTime, 178.2ms SatisfiabilityAnalysisTime, 66.3ms 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 [2021-10-24 09:40:53,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/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 [2021-10-24 09:40:55,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:40:55,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:40:55,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:40:55,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:40:55,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:40:55,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:40:55,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:40:55,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:40:55,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:40:55,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:40:55,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:40:55,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:40:55,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:40:55,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:40:55,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:40:55,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:40:55,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:40:55,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:40:55,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:40:55,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:40:55,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:40:55,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:40:55,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:40:55,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:40:55,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:40:55,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:40:55,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:40:55,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:40:55,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:40:55,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:40:55,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:40:55,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:40:55,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:40:55,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:40:55,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:40:55,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:40:55,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:40:55,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:40:55,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:40:55,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:40:55,694 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 09:40:55,739 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:40:55,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:40:55,741 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:40:55,742 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:40:55,742 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:40:55,742 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:40:55,743 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:40:55,743 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:40:55,743 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:40:55,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:40:55,746 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:40:55,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:40:55,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:40:55,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:40:55,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:40:55,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:40:55,748 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:40:55,748 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 09:40:55,748 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 09:40:55,749 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:40:55,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:40:55,749 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:40:55,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:40:55,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:40:55,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 09:40:55,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:40:55,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:40:55,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:40:55,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:40:55,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:40:55,752 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 09:40:55,752 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 09:40:55,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:40:55,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:40:55,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:40:55,754 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_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0682c5b0aa15583147a7e08f281b31c84f28e6f8db41872cc8e834f12ff21a47 [2021-10-24 09:40:56,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:40:56,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:40:56,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:40:56,229 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:40:56,230 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:40:56,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/float-newlib/float_req_bl_0620a.c [2021-10-24 09:40:56,291 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/data/ac3b59483/ae3f01c3939b4f218ae0af9c76f82574/FLAG59268cb2d [2021-10-24 09:40:56,744 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:40:56,744 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c [2021-10-24 09:40:56,751 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/data/ac3b59483/ae3f01c3939b4f218ae0af9c76f82574/FLAG59268cb2d [2021-10-24 09:40:57,126 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/data/ac3b59483/ae3f01c3939b4f218ae0af9c76f82574 [2021-10-24 09:40:57,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:40:57,131 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:40:57,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:40:57,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:40:57,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:40:57,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:40:57" (1/1) ... [2021-10-24 09:40:57,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c30ad11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:57, skipping insertion in model container [2021-10-24 09:40:57,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:40:57" (1/1) ... [2021-10-24 09:40:57,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:40:57,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:40:57,388 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_74956193-8dde-42ab-9a3c-2c7909267dcf/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c[3328,3341] [2021-10-24 09:40:57,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:40:57,406 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:40:57,479 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_74956193-8dde-42ab-9a3c-2c7909267dcf/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c[3328,3341] [2021-10-24 09:40:57,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:40:57,511 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:40:57,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:57 WrapperNode [2021-10-24 09:40:57,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:40:57,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:40:57,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:40:57,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:40:57,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:57" (1/1) ... [2021-10-24 09:40:57,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:57" (1/1) ... [2021-10-24 09:40:57,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:40:57,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:40:57,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:40:57,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:40:57,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:57" (1/1) ... [2021-10-24 09:40:57,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:57" (1/1) ... [2021-10-24 09:40:57,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:57" (1/1) ... [2021-10-24 09:40:57,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:57" (1/1) ... [2021-10-24 09:40:57,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:57" (1/1) ... [2021-10-24 09:40:57,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:57" (1/1) ... [2021-10-24 09:40:57,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:57" (1/1) ... [2021-10-24 09:40:57,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:40:57,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:40:57,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:40:57,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:40:57,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:57" (1/1) ... [2021-10-24 09:40:57,687 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:40:57,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:40:57,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:40:57,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:40:57,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-10-24 09:40:57,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 09:40:57,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:40:57,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-24 09:40:57,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-24 09:40:57,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:40:57,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:40:57,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-24 09:40:57,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-24 09:40:57,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 09:41:08,900 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:41:08,900 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-24 09:41:08,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:41:08 BoogieIcfgContainer [2021-10-24 09:41:08,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:41:08,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:41:08,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:41:08,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:41:08,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:40:57" (1/3) ... [2021-10-24 09:41:08,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2fed35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:41:08, skipping insertion in model container [2021-10-24 09:41:08,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:57" (2/3) ... [2021-10-24 09:41:08,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2fed35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:41:08, skipping insertion in model container [2021-10-24 09:41:08,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:41:08" (3/3) ... [2021-10-24 09:41:08,910 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620a.c [2021-10-24 09:41:08,916 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:41:08,916 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:41:08,953 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:41:08,958 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 [2021-10-24 09:41:08,958 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 09:41:08,972 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 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) [2021-10-24 09:41:08,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 09:41:08,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:08,978 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:08,978 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:08,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:08,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1030429181, now seen corresponding path program 1 times [2021-10-24 09:41:08,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:08,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300159493] [2021-10-24 09:41:08,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:08,998 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:08,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:09,009 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:09,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 09:41:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:09,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 09:41:09,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:09,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:10,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:10,089 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:10,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300159493] [2021-10-24 09:41:10,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300159493] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:10,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:10,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 09:41:10,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065426296] [2021-10-24 09:41:10,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 09:41:10,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:10,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 09:41:10,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:41:10,110 INFO L87 Difference]: Start difference. First operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 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) [2021-10-24 09:41:10,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:10,127 INFO L93 Difference]: Finished difference Result 72 states and 112 transitions. [2021-10-24 09:41:10,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 09:41:10,128 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 [2021-10-24 09:41:10,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:10,137 INFO L225 Difference]: With dead ends: 72 [2021-10-24 09:41:10,137 INFO L226 Difference]: Without dead ends: 34 [2021-10-24 09:41:10,140 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 [2021-10-24 09:41:10,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-24 09:41:10,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-24 09:41:10,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 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) [2021-10-24 09:41:10,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2021-10-24 09:41:10,182 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 10 [2021-10-24 09:41:10,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:10,183 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2021-10-24 09:41:10,183 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) [2021-10-24 09:41:10,183 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2021-10-24 09:41:10,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 09:41:10,184 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:10,185 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:10,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:10,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:10,401 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:10,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:10,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1304878016, now seen corresponding path program 1 times [2021-10-24 09:41:10,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:10,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613272127] [2021-10-24 09:41:10,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:10,404 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:10,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:10,405 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:10,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 09:41:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:11,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-24 09:41:11,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:11,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:11,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:12,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:12,043 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:12,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613272127] [2021-10-24 09:41:12,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613272127] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:12,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:12,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-24 09:41:12,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066855232] [2021-10-24 09:41:12,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 09:41:12,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:12,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 09:41:12,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-24 09:41:12,047 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-10-24 09:41:18,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:18,070 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2021-10-24 09:41:18,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:41:18,071 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 11 [2021-10-24 09:41:18,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:18,072 INFO L225 Difference]: With dead ends: 57 [2021-10-24 09:41:18,072 INFO L226 Difference]: Without dead ends: 32 [2021-10-24 09:41:18,073 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 473.3ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-24 09:41:18,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-24 09:41:18,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2021-10-24 09:41:18,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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) [2021-10-24 09:41:18,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-24 09:41:18,077 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 11 [2021-10-24 09:41:18,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:18,077 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-24 09:41:18,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-10-24 09:41:18,077 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-24 09:41:18,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 09:41:18,078 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:18,078 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:18,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:18,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:18,282 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:18,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:18,283 INFO L82 PathProgramCache]: Analyzing trace with hash -413875709, now seen corresponding path program 1 times [2021-10-24 09:41:18,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:18,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716210545] [2021-10-24 09:41:18,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:18,284 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:18,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:18,287 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:18,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 09:41:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:19,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 09:41:19,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:19,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:19,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:19,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:19,746 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:19,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716210545] [2021-10-24 09:41:19,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716210545] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:19,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:19,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-24 09:41:19,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933733387] [2021-10-24 09:41:19,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 09:41:19,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:19,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 09:41:19,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:41:19,749 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2021-10-24 09:41:28,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:28,367 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-10-24 09:41:28,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 09:41:28,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 13 [2021-10-24 09:41:28,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:28,369 INFO L225 Difference]: With dead ends: 35 [2021-10-24 09:41:28,369 INFO L226 Difference]: Without dead ends: 32 [2021-10-24 09:41:28,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 330.9ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-24 09:41:28,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-24 09:41:28,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2021-10-24 09:41:28,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 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) [2021-10-24 09:41:28,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-10-24 09:41:28,379 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 13 [2021-10-24 09:41:28,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:28,379 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-10-24 09:41:28,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2021-10-24 09:41:28,380 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-10-24 09:41:28,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-24 09:41:28,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:28,383 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:28,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:28,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:28,585 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:28,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:28,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1848532469, now seen corresponding path program 1 times [2021-10-24 09:41:28,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:28,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869475213] [2021-10-24 09:41:28,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:28,588 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:28,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:28,589 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:28,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 09:41:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:30,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 09:41:30,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:31,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:33,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:33,222 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:33,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869475213] [2021-10-24 09:41:33,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869475213] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:33,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:33,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-24 09:41:33,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520599539] [2021-10-24 09:41:33,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:41:33,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:33,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:41:33,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:41:33,225 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-10-24 09:41:33,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:33,388 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2021-10-24 09:41:33,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:41:33,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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 16 [2021-10-24 09:41:33,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:33,395 INFO L225 Difference]: With dead ends: 32 [2021-10-24 09:41:33,395 INFO L226 Difference]: Without dead ends: 18 [2021-10-24 09:41:33,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 881.8ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:41:33,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-24 09:41:33,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-24 09:41:33,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 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) [2021-10-24 09:41:33,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2021-10-24 09:41:33,399 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2021-10-24 09:41:33,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:33,399 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2021-10-24 09:41:33,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-10-24 09:41:33,399 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2021-10-24 09:41:33,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-24 09:41:33,400 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:33,400 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:33,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:33,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:33,601 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:33,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:33,601 INFO L82 PathProgramCache]: Analyzing trace with hash 712330328, now seen corresponding path program 1 times [2021-10-24 09:41:33,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:33,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412177378] [2021-10-24 09:41:33,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:33,602 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:33,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:33,603 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:33,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 09:41:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:34,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-24 09:41:34,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:35,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:35,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:36,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:36,533 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:36,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412177378] [2021-10-24 09:41:36,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412177378] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:36,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:36,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2021-10-24 09:41:36,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385459942] [2021-10-24 09:41:36,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-24 09:41:36,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:36,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-24 09:41:36,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-10-24 09:41:36,536 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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) [2021-10-24 09:41:37,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:37,476 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2021-10-24 09:41:37,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 09:41:37,477 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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 17 [2021-10-24 09:41:37,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:37,477 INFO L225 Difference]: With dead ends: 18 [2021-10-24 09:41:37,477 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 09:41:37,478 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1614.6ms TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-24 09:41:37,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 09:41:37,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 09:41:37,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:37,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 09:41:37,479 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-24 09:41:37,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:37,479 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 09:41:37,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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) [2021-10-24 09:41:37,479 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 09:41:37,480 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 09:41:37,482 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:41:37,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:37,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:37,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 09:41:37,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:41:37,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:41:37,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:41:37,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:41:37,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:41:37,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:41:37,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:41:38,216 INFO L857 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-10-24 09:41:38,217 INFO L857 garLoopResultBuilder]: For program point L143-2(lines 143 146) no Hoare annotation was computed. [2021-10-24 09:41:38,217 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 09:41:38,217 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-24 09:41:38,218 INFO L853 garLoopResultBuilder]: At program point L28(lines 16 29) the Hoare annotation is: false [2021-10-24 09:41:38,218 INFO L857 garLoopResultBuilder]: For program point L144(line 144) no Hoare annotation was computed. [2021-10-24 09:41:38,218 INFO L857 garLoopResultBuilder]: For program point L111(lines 111 116) no Hoare annotation was computed. [2021-10-24 09:41:38,218 INFO L853 garLoopResultBuilder]: At program point L128(lines 119 129) the Hoare annotation is: (and (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1))) |ULTIMATE.start_main_#t~short32| (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= ULTIMATE.start_atan_float_~x (_ +zero 8 24)) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= |ULTIMATE.start_atan_float_#res| (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= currentRoundingMode roundNearestTiesToEven) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32))) [2021-10-24 09:41:38,219 INFO L857 garLoopResultBuilder]: For program point L122-1(lines 122 126) no Hoare annotation was computed. [2021-10-24 09:41:38,219 INFO L853 garLoopResultBuilder]: At program point L122-2(lines 122 126) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short32| (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= ULTIMATE.start_atan_float_~x (_ +zero 8 24)) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= |ULTIMATE.start_atan_float_#res| (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-24 09:41:38,219 INFO L857 garLoopResultBuilder]: For program point L23(lines 23 27) no Hoare annotation was computed. [2021-10-24 09:41:38,220 INFO L857 garLoopResultBuilder]: For program point L122-3(lines 122 126) no Hoare annotation was computed. [2021-10-24 09:41:38,220 INFO L857 garLoopResultBuilder]: For program point L23-1(lines 16 29) no Hoare annotation was computed. [2021-10-24 09:41:38,220 INFO L857 garLoopResultBuilder]: For program point L23-2(lines 23 27) no Hoare annotation was computed. [2021-10-24 09:41:38,220 INFO L857 garLoopResultBuilder]: For program point L81(lines 81 97) no Hoare annotation was computed. [2021-10-24 09:41:38,220 INFO L857 garLoopResultBuilder]: For program point L73(lines 73 98) no Hoare annotation was computed. [2021-10-24 09:41:38,221 INFO L857 garLoopResultBuilder]: For program point L65(lines 65 72) no Hoare annotation was computed. [2021-10-24 09:41:38,221 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-24 09:41:38,221 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 96) no Hoare annotation was computed. [2021-10-24 09:41:38,221 INFO L857 garLoopResultBuilder]: For program point L90-2(lines 73 98) no Hoare annotation was computed. [2021-10-24 09:41:38,222 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 144) no Hoare annotation was computed. [2021-10-24 09:41:38,222 INFO L860 garLoopResultBuilder]: At program point L148(lines 131 149) the Hoare annotation is: true [2021-10-24 09:41:38,222 INFO L857 garLoopResultBuilder]: For program point L115(line 115) no Hoare annotation was computed. [2021-10-24 09:41:38,222 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 88) no Hoare annotation was computed. [2021-10-24 09:41:38,223 INFO L857 garLoopResultBuilder]: For program point L115-2(line 115) no Hoare annotation was computed. [2021-10-24 09:41:38,223 INFO L853 garLoopResultBuilder]: At program point L115-3(lines 55 117) the Hoare annotation is: (and (= ULTIMATE.start_atan_float_~x (_ +zero 8 24)) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= |ULTIMATE.start_atan_float_#res| (_ +zero 8 24)) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-24 09:41:38,223 INFO L857 garLoopResultBuilder]: For program point L74(lines 74 77) no Hoare annotation was computed. [2021-10-24 09:41:38,223 INFO L857 garLoopResultBuilder]: For program point L74-2(lines 74 77) no Hoare annotation was computed. [2021-10-24 09:41:38,224 INFO L857 garLoopResultBuilder]: For program point L66(lines 66 67) no Hoare annotation was computed. [2021-10-24 09:41:38,224 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 09:41:38,224 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 76) no Hoare annotation was computed. [2021-10-24 09:41:38,224 INFO L857 garLoopResultBuilder]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2021-10-24 09:41:38,225 INFO L853 garLoopResultBuilder]: At program point L59-2(lines 59 63) the Hoare annotation is: (and (= ULTIMATE.start_atan_float_~x (_ +zero 8 24)) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-24 09:41:38,225 INFO L857 garLoopResultBuilder]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2021-10-24 09:41:38,225 INFO L857 garLoopResultBuilder]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2021-10-24 09:41:38,225 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 18 22) the Hoare annotation is: false [2021-10-24 09:41:38,225 INFO L857 garLoopResultBuilder]: For program point L68(lines 68 71) no Hoare annotation was computed. [2021-10-24 09:41:38,230 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:41:38,242 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 09:41:38,246 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 09:41:38,247 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 09:41:38,248 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 09:41:38,249 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 09:41:38,250 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 09:41:38,251 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 09:41:38,251 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 09:41:38,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:41:38 BoogieIcfgContainer [2021-10-24 09:41:38,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:41:38,253 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:41:38,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:41:38,253 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:41:38,254 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:41:08" (3/4) ... [2021-10-24 09:41:38,257 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 09:41:38,270 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-24 09:41:38,271 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-24 09:41:38,271 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 09:41:38,272 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 09:41:38,297 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~Pluszero~LONGDOUBLE() && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && \result == ~Pluszero~LONGDOUBLE()) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-10-24 09:41:38,298 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((aux-res == 0.0f && __signbit_float(res) == 0-aux && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && \result == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-10-24 09:41:38,298 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && \result == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && \result == 0bv32 [2021-10-24 09:41:38,330 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:41:38,330 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:41:38,331 INFO L168 Benchmark]: Toolchain (without parser) took 41199.12 ms. Allocated memory was 69.2 MB in the beginning and 98.6 MB in the end (delta: 29.4 MB). Free memory was 50.3 MB in the beginning and 34.1 MB in the end (delta: 16.2 MB). Peak memory consumption was 45.0 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:38,332 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 69.2 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:41:38,332 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.30 ms. Allocated memory is still 69.2 MB. Free memory was 50.1 MB in the beginning and 49.2 MB in the end (delta: 818.4 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:38,333 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.99 ms. Allocated memory is still 69.2 MB. Free memory was 49.2 MB in the beginning and 46.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:38,333 INFO L168 Benchmark]: Boogie Preprocessor took 68.00 ms. Allocated memory is still 69.2 MB. Free memory was 46.9 MB in the beginning and 44.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:38,334 INFO L168 Benchmark]: RCFGBuilder took 11238.16 ms. Allocated memory is still 69.2 MB. Free memory was 44.6 MB in the beginning and 45.7 MB in the end (delta: -1.2 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:38,334 INFO L168 Benchmark]: TraceAbstraction took 29348.31 ms. Allocated memory was 69.2 MB in the beginning and 98.6 MB in the end (delta: 29.4 MB). Free memory was 45.4 MB in the beginning and 39.6 MB in the end (delta: 5.8 MB). Peak memory consumption was 35.0 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:38,334 INFO L168 Benchmark]: Witness Printer took 77.11 ms. Allocated memory is still 98.6 MB. Free memory was 39.6 MB in the beginning and 34.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:38,337 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 69.2 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 377.30 ms. Allocated memory is still 69.2 MB. Free memory was 50.1 MB in the beginning and 49.2 MB in the end (delta: 818.4 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.99 ms. Allocated memory is still 69.2 MB. Free memory was 49.2 MB in the beginning and 46.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.00 ms. Allocated memory is still 69.2 MB. Free memory was 46.9 MB in the beginning and 44.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 11238.16 ms. Allocated memory is still 69.2 MB. Free memory was 44.6 MB in the beginning and 45.7 MB in the end (delta: -1.2 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 29348.31 ms. Allocated memory was 69.2 MB in the beginning and 98.6 MB in the end (delta: 29.4 MB). Free memory was 45.4 MB in the beginning and 39.6 MB in the end (delta: 5.8 MB). Peak memory consumption was 35.0 MB. Max. memory is 16.1 GB. * Witness Printer took 77.11 ms. Allocated memory is still 98.6 MB. Free memory was 39.6 MB in the beginning and 34.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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 - PositiveResult [Line: 144]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 29278.7ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 14.1ms, AutomataDifference: 15807.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 532.4ms, InitialAbstractionConstructionTime: 9.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 111 SDtfs, 162 SDslu, 201 SDs, 0 SdLazy, 82 SolverSat, 13 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 14472.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3300.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 33.4ms AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 12 NumberOfFragments, 122 HoareAnnotationTreeSize, 7 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 61.1ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 465.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 79.3ms SsaConstructionTime, 4789.8ms SatisfiabilityAnalysisTime, 6584.3ms InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 124 ConstructedInterpolants, 12 QuantifiedInterpolants, 624 SizeOfPredicates, 28 NumberOfNonLiveVariables, 513 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 119]: Loop Invariant [2021-10-24 09:41:38,350 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 09:41:38,351 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((((((((~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && \result == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && \result == 0bv32 - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 59]: Loop Invariant [2021-10-24 09:41:38,352 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 09:41:38,353 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((x == ~Pluszero~LONGDOUBLE() && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 122]: Loop Invariant [2021-10-24 09:41:38,354 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 09:41:38,354 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((((((aux-res == 0.0f && __signbit_float(res) == 0-aux && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && \result == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 55]: Loop Invariant [2021-10-24 09:41:38,355 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 09:41:38,356 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (((x == ~Pluszero~LONGDOUBLE() && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && \result == ~Pluszero~LONGDOUBLE()) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2021-10-24 09:41:38,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74956193-8dde-42ab-9a3c-2c7909267dcf/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...