./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0930.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_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d734d3869a39929ea479cab14eb5865c36aeb805da0fe481c4349ce6c2b3759 ..................................................................................................................................................................................................................................................................................................................... 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_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d734d3869a39929ea479cab14eb5865c36aeb805da0fe481c4349ce6c2b3759 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:24:57,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:24:57,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:24:57,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:24:57,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:24:57,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:24:57,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:24:57,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:24:57,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:24:57,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:24:58,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:24:58,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:24:58,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:24:58,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:24:58,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:24:58,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:24:58,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:24:58,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:24:58,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:24:58,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:24:58,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:24:58,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:24:58,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:24:58,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:24:58,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:24:58,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:24:58,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:24:58,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:24:58,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:24:58,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:24:58,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:24:58,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:24:58,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:24:58,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:24:58,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:24:58,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:24:58,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:24:58,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:24:58,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:24:58,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:24:58,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:24:58,061 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:24:58,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:24:58,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:24:58,104 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:24:58,110 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:24:58,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:24:58,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:24:58,112 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:24:58,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:24:58,113 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:24:58,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:24:58,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:24:58,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:24:58,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:24:58,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:24:58,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:24:58,115 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:24:58,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:24:58,115 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:24:58,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:24:58,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:24:58,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:24:58,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:24:58,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:24:58,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:24:58,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:24:58,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:24:58,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:24:58,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:24:58,118 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:24:58,120 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:24:58,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:24:58,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:24:58,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d734d3869a39929ea479cab14eb5865c36aeb805da0fe481c4349ce6c2b3759 [2021-10-21 19:24:58,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:24:58,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:24:58,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:24:58,482 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:24:58,483 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:24:58,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c [2021-10-21 19:24:58,546 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/data/5f10e3394/58658aaca58c4fd3a7beb4cf04baba6b/FLAG8d3b74100 [2021-10-21 19:24:59,032 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:24:59,034 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/sv-benchmarks/c/float-newlib/double_req_bl_0930.c [2021-10-21 19:24:59,048 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/data/5f10e3394/58658aaca58c4fd3a7beb4cf04baba6b/FLAG8d3b74100 [2021-10-21 19:24:59,374 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/data/5f10e3394/58658aaca58c4fd3a7beb4cf04baba6b [2021-10-21 19:24:59,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:24:59,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:24:59,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:24:59,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:24:59,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:24:59,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:24:59" (1/1) ... [2021-10-21 19:24:59,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c7d31a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:59, skipping insertion in model container [2021-10-21 19:24:59,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:24:59" (1/1) ... [2021-10-21 19:24:59,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:24:59,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:24:59,636 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_1479ebc3-99fe-455d-90ee-730ce7b8663b/sv-benchmarks/c/float-newlib/double_req_bl_0930.c[3808,3821] [2021-10-21 19:24:59,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:24:59,649 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:24:59,691 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_1479ebc3-99fe-455d-90ee-730ce7b8663b/sv-benchmarks/c/float-newlib/double_req_bl_0930.c[3808,3821] [2021-10-21 19:24:59,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:24:59,707 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:24:59,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:59 WrapperNode [2021-10-21 19:24:59,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:24:59,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:24:59,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:24:59,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:24:59,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:59" (1/1) ... [2021-10-21 19:24:59,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:59" (1/1) ... [2021-10-21 19:24:59,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:24:59,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:24:59,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:24:59,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:24:59,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:59" (1/1) ... [2021-10-21 19:24:59,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:59" (1/1) ... [2021-10-21 19:24:59,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:59" (1/1) ... [2021-10-21 19:24:59,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:59" (1/1) ... [2021-10-21 19:24:59,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:59" (1/1) ... [2021-10-21 19:24:59,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:59" (1/1) ... [2021-10-21 19:24:59,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:59" (1/1) ... [2021-10-21 19:24:59,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:24:59,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:24:59,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:24:59,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:24:59,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:59" (1/1) ... [2021-10-21 19:24:59,802 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:24:59,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:24:59,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:24:59,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:24:59,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:24:59,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:24:59,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-21 19:24:59,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:24:59,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-21 19:24:59,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:24:59,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:24:59,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:24:59,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:25:00,348 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:25:00,349 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-21 19:25:00,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:25:00 BoogieIcfgContainer [2021-10-21 19:25:00,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:25:00,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:25:00,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:25:00,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:25:00,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:24:59" (1/3) ... [2021-10-21 19:25:00,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c8da58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:25:00, skipping insertion in model container [2021-10-21 19:25:00,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:59" (2/3) ... [2021-10-21 19:25:00,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c8da58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:25:00, skipping insertion in model container [2021-10-21 19:25:00,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:25:00" (3/3) ... [2021-10-21 19:25:00,364 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0930.c [2021-10-21 19:25:00,372 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:25:00,373 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:25:00,444 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:25:00,454 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=PETRI_NET, 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 [2021-10-21 19:25:00,454 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:25:00,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 32 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:25:00,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 19:25:00,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:25:00,496 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:25:00,496 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:25:00,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:25:00,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1030213693, now seen corresponding path program 1 times [2021-10-21 19:25:00,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:25:00,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216926580] [2021-10-21 19:25:00,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:25:00,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:25:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:25:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:25:00,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:25:00,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216926580] [2021-10-21 19:25:00,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216926580] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:25:00,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:25:00,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:25:00,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443715645] [2021-10-21 19:25:00,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:25:00,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:25:00,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:25:00,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:25:00,791 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 32 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:25:00,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:25:00,822 INFO L93 Difference]: Finished difference Result 64 states and 104 transitions. [2021-10-21 19:25:00,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:25:00,824 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 [2021-10-21 19:25:00,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:25:00,834 INFO L225 Difference]: With dead ends: 64 [2021-10-21 19:25:00,836 INFO L226 Difference]: Without dead ends: 30 [2021-10-21 19:25:00,840 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 [2021-10-21 19:25:00,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-21 19:25:00,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-21 19:25:00,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:25:00,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2021-10-21 19:25:00,964 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 10 [2021-10-21 19:25:00,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:25:00,965 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2021-10-21 19:25:00,965 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) [2021-10-21 19:25:00,966 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2021-10-21 19:25:00,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:25:00,967 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:25:00,967 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:25:00,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:25:00,968 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:25:00,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:25:00,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1305093504, now seen corresponding path program 1 times [2021-10-21 19:25:00,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:25:00,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98854358] [2021-10-21 19:25:00,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:25:00,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:25:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:25:01,073 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:25:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:25:01,159 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:25:01,159 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:25:01,161 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:25:01,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:25:01,170 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:25:01,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:25:01 BoogieIcfgContainer [2021-10-21 19:25:01,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:25:01,211 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:25:01,212 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:25:01,212 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:25:01,213 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:25:00" (3/4) ... [2021-10-21 19:25:01,216 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:25:01,216 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:25:01,219 INFO L168 Benchmark]: Toolchain (without parser) took 1839.78 ms. Allocated memory is still 104.9 MB. Free memory was 68.6 MB in the beginning and 72.2 MB in the end (delta: -3.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:25:01,220 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 104.9 MB. Free memory was 85.1 MB in the beginning and 85.1 MB in the end (delta: 56.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:25:01,221 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.57 ms. Allocated memory is still 104.9 MB. Free memory was 68.4 MB in the beginning and 78.7 MB in the end (delta: -10.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:25:01,221 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.02 ms. Allocated memory is still 104.9 MB. Free memory was 78.7 MB in the beginning and 76.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:25:01,222 INFO L168 Benchmark]: Boogie Preprocessor took 34.80 ms. Allocated memory is still 104.9 MB. Free memory was 76.6 MB in the beginning and 75.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:25:01,223 INFO L168 Benchmark]: RCFGBuilder took 558.11 ms. Allocated memory is still 104.9 MB. Free memory was 74.8 MB in the beginning and 61.3 MB in the end (delta: 13.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:25:01,224 INFO L168 Benchmark]: TraceAbstraction took 857.48 ms. Allocated memory is still 104.9 MB. Free memory was 61.0 MB in the beginning and 72.7 MB in the end (delta: -11.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:25:01,225 INFO L168 Benchmark]: Witness Printer took 5.27 ms. Allocated memory is still 104.9 MB. Free memory was 72.7 MB in the beginning and 72.2 MB in the end (delta: 507.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:25:01,229 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 104.9 MB. Free memory was 85.1 MB in the beginning and 85.1 MB in the end (delta: 56.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 328.57 ms. Allocated memory is still 104.9 MB. Free memory was 68.4 MB in the beginning and 78.7 MB in the end (delta: -10.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.02 ms. Allocated memory is still 104.9 MB. Free memory was 78.7 MB in the beginning and 76.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.80 ms. Allocated memory is still 104.9 MB. Free memory was 76.6 MB in the beginning and 75.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 558.11 ms. Allocated memory is still 104.9 MB. Free memory was 74.8 MB in the beginning and 61.3 MB in the end (delta: 13.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 857.48 ms. Allocated memory is still 104.9 MB. Free memory was 61.0 MB in the beginning and 72.7 MB in the end (delta: -11.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.27 ms. Allocated memory is still 104.9 MB. Free memory was 72.7 MB in the beginning and 72.2 MB in the end (delta: 507.8 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: 152]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 151, overapproximation of bitwiseOr at line 61, overapproximation of someBinaryArithmeticDOUBLEoperation at line 62. Possible FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L146] double x = 1.0; [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L60] COND TRUE hx < 0x00100000 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L61] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L62] return -two54_log / zero; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L148] double res = __ieee754_log(x); [L151] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L151] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L152] reach_error() VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 726.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 28.0ms, AutomataDifference: 67.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 44 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=33occurred 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: 68.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.4ms SsaConstructionTime, 133.9ms SatisfiabilityAnalysisTime, 88.3ms InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 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 [2021-10-21 19:25:01,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/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 [2021-10-21 19:25:04,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:25:04,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:25:04,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:25:04,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:25:04,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:25:04,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:25:04,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:25:04,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:25:04,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:25:04,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:25:04,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:25:04,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:25:04,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:25:04,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:25:04,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:25:04,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:25:04,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:25:04,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:25:04,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:25:04,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:25:04,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:25:04,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:25:04,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:25:04,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:25:04,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:25:04,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:25:04,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:25:04,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:25:04,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:25:04,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:25:04,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:25:04,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:25:04,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:25:04,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:25:04,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:25:04,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:25:04,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:25:04,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:25:04,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:25:04,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:25:04,419 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 19:25:04,469 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:25:04,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:25:04,470 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:25:04,470 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:25:04,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:25:04,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:25:04,472 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:25:04,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:25:04,473 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:25:04,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:25:04,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:25:04,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:25:04,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:25:04,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:25:04,474 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 19:25:04,475 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 19:25:04,475 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:25:04,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:25:04,475 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:25:04,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:25:04,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:25:04,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:25:04,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:25:04,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:25:04,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:25:04,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:25:04,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:25:04,478 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 19:25:04,478 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 19:25:04,478 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:25:04,478 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:25:04,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:25:04,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:25:04,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 19:25:04,479 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_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d734d3869a39929ea479cab14eb5865c36aeb805da0fe481c4349ce6c2b3759 [2021-10-21 19:25:04,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:25:04,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:25:04,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:25:04,955 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:25:04,956 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:25:04,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c [2021-10-21 19:25:05,049 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/data/699fba8c9/6f8f3c8c24c841909925ac700734b26e/FLAG742e26adf [2021-10-21 19:25:05,703 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:25:05,703 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/sv-benchmarks/c/float-newlib/double_req_bl_0930.c [2021-10-21 19:25:05,714 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/data/699fba8c9/6f8f3c8c24c841909925ac700734b26e/FLAG742e26adf [2021-10-21 19:25:06,015 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/data/699fba8c9/6f8f3c8c24c841909925ac700734b26e [2021-10-21 19:25:06,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:25:06,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:25:06,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:25:06,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:25:06,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:25:06,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:25:06" (1/1) ... [2021-10-21 19:25:06,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1276870c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:06, skipping insertion in model container [2021-10-21 19:25:06,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:25:06" (1/1) ... [2021-10-21 19:25:06,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:25:06,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:25:06,316 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_1479ebc3-99fe-455d-90ee-730ce7b8663b/sv-benchmarks/c/float-newlib/double_req_bl_0930.c[3808,3821] [2021-10-21 19:25:06,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:25:06,353 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:25:06,463 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_1479ebc3-99fe-455d-90ee-730ce7b8663b/sv-benchmarks/c/float-newlib/double_req_bl_0930.c[3808,3821] [2021-10-21 19:25:06,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:25:06,501 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:25:06,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:06 WrapperNode [2021-10-21 19:25:06,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:25:06,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:25:06,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:25:06,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:25:06,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:06" (1/1) ... [2021-10-21 19:25:06,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:06" (1/1) ... [2021-10-21 19:25:06,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:25:06,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:25:06,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:25:06,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:25:06,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:06" (1/1) ... [2021-10-21 19:25:06,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:06" (1/1) ... [2021-10-21 19:25:06,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:06" (1/1) ... [2021-10-21 19:25:06,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:06" (1/1) ... [2021-10-21 19:25:06,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:06" (1/1) ... [2021-10-21 19:25:06,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:06" (1/1) ... [2021-10-21 19:25:06,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:06" (1/1) ... [2021-10-21 19:25:06,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:25:06,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:25:06,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:25:06,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:25:06,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:06" (1/1) ... [2021-10-21 19:25:06,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:25:06,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:25:06,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:25:06,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:25:06,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-21 19:25:06,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-21 19:25:06,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 19:25:06,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:25:06,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-21 19:25:06,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:25:06,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:25:06,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-21 19:25:06,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:25:31,165 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:25:31,166 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-21 19:25:31,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:25:31 BoogieIcfgContainer [2021-10-21 19:25:31,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:25:31,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:25:31,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:25:31,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:25:31,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:25:06" (1/3) ... [2021-10-21 19:25:31,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a20efd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:25:31, skipping insertion in model container [2021-10-21 19:25:31,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:25:06" (2/3) ... [2021-10-21 19:25:31,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a20efd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:25:31, skipping insertion in model container [2021-10-21 19:25:31,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:25:31" (3/3) ... [2021-10-21 19:25:31,179 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0930.c [2021-10-21 19:25:31,184 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:25:31,184 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:25:31,262 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:25:31,274 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=PETRI_NET, 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 [2021-10-21 19:25:31,274 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:25:31,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 32 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:25:31,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 19:25:31,344 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:25:31,345 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:25:31,346 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:25:31,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:25:31,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1030213693, now seen corresponding path program 1 times [2021-10-21 19:25:31,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:25:31,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580769858] [2021-10-21 19:25:31,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:25:31,368 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:25:31,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:25:31,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:25:31,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 19:25:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:25:32,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-21 19:25:32,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:25:32,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:25:32,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:25:33,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:25:33,019 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:25:33,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580769858] [2021-10-21 19:25:33,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580769858] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:25:33,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:25:33,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 19:25:33,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432661154] [2021-10-21 19:25:33,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:25:33,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:25:33,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:25:33,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:25:33,051 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 32 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:25:33,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:25:33,079 INFO L93 Difference]: Finished difference Result 64 states and 104 transitions. [2021-10-21 19:25:33,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:25:33,083 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 [2021-10-21 19:25:33,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:25:33,092 INFO L225 Difference]: With dead ends: 64 [2021-10-21 19:25:33,093 INFO L226 Difference]: Without dead ends: 30 [2021-10-21 19:25:33,096 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 [2021-10-21 19:25:33,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-21 19:25:33,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-21 19:25:33,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:25:33,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2021-10-21 19:25:33,139 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 10 [2021-10-21 19:25:33,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:25:33,139 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2021-10-21 19:25:33,140 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) [2021-10-21 19:25:33,140 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2021-10-21 19:25:33,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:25:33,141 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:25:33,141 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:25:33,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:25:33,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:25:33,342 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:25:33,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:25:33,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1305093504, now seen corresponding path program 1 times [2021-10-21 19:25:33,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:25:33,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835384322] [2021-10-21 19:25:33,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:25:33,345 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:25:33,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:25:33,347 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:25:33,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 19:25:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:25:34,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:25:34,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:25:35,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:25:35,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:25:35,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:25:35,957 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:25:35,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835384322] [2021-10-21 19:25:35,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835384322] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:25:35,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:25:35,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-21 19:25:35,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468145002] [2021-10-21 19:25:35,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:25:35,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:25:35,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:25:35,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:25:35,962 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2021-10-21 19:25:40,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:25:40,173 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2021-10-21 19:25:40,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:25:40,688 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 [2021-10-21 19:25:40,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:25:40,689 INFO L225 Difference]: With dead ends: 50 [2021-10-21 19:25:40,689 INFO L226 Difference]: Without dead ends: 26 [2021-10-21 19:25:40,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 695.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:25:40,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-21 19:25:40,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-21 19:25:40,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:25:40,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2021-10-21 19:25:40,697 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 11 [2021-10-21 19:25:40,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:25:40,697 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-10-21 19:25:40,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2021-10-21 19:25:40,698 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2021-10-21 19:25:40,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:25:40,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:25:40,699 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:25:40,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:25:40,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:25:40,923 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:25:40,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:25:40,924 INFO L82 PathProgramCache]: Analyzing trace with hash 464469069, now seen corresponding path program 1 times [2021-10-21 19:25:40,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:25:40,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914485690] [2021-10-21 19:25:40,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:25:40,928 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:25:40,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:25:40,930 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:25:40,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 19:25:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:25:41,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:25:41,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:25:42,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:25:42,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:25:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:25:43,073 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:25:43,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914485690] [2021-10-21 19:25:43,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914485690] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:25:43,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:25:43,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-21 19:25:43,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976291145] [2021-10-21 19:25:43,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:25:43,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:25:43,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:25:43,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:25:43,076 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-10-21 19:26:12,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:26:12,674 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2021-10-21 19:26:12,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:26:12,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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 [2021-10-21 19:26:12,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:26:12,676 INFO L225 Difference]: With dead ends: 47 [2021-10-21 19:26:12,676 INFO L226 Difference]: Without dead ends: 44 [2021-10-21 19:26:12,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1118.6ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:26:12,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-21 19:26:12,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 28. [2021-10-21 19:26:12,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 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) [2021-10-21 19:26:12,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-10-21 19:26:12,683 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 17 [2021-10-21 19:26:12,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:26:12,683 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-10-21 19:26:12,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-10-21 19:26:12,684 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2021-10-21 19:26:12,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:26:12,684 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:26:12,685 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:26:12,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:26:12,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:26:12,885 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:26:12,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:26:12,892 INFO L82 PathProgramCache]: Analyzing trace with hash 466316111, now seen corresponding path program 1 times [2021-10-21 19:26:12,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:26:12,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16539675] [2021-10-21 19:26:12,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:26:12,893 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:26:12,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:26:12,894 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:26:12,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 19:26:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:26:13,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:26:13,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:26:16,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:26:16,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:26:18,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:26:18,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:26:18,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16539675] [2021-10-21 19:26:18,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16539675] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:26:18,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:26:18,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-21 19:26:18,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899144348] [2021-10-21 19:26:18,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:26:18,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:26:18,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:26:18,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:26:18,453 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 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) [2021-10-21 19:27:11,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:27:11,173 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2021-10-21 19:27:11,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:27:11,226 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 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 [2021-10-21 19:27:11,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:27:11,227 INFO L225 Difference]: With dead ends: 46 [2021-10-21 19:27:11,227 INFO L226 Difference]: Without dead ends: 37 [2021-10-21 19:27:11,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3069.7ms TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:27:11,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-21 19:27:11,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2021-10-21 19:27:11,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:27:11,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-10-21 19:27:11,235 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 17 [2021-10-21 19:27:11,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:27:11,236 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-10-21 19:27:11,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 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) [2021-10-21 19:27:11,236 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-10-21 19:27:11,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:27:11,237 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:27:11,237 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:27:11,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:27:11,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:27:11,452 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:27:11,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:27:11,453 INFO L82 PathProgramCache]: Analyzing trace with hash 671337773, now seen corresponding path program 1 times [2021-10-21 19:27:11,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:27:11,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860844446] [2021-10-21 19:27:11,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:27:11,454 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:27:11,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:27:11,455 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:27:11,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 19:27:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:27:12,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 19:27:12,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:27:13,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-10-21 19:27:17,582 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 19:27:17,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 207 treesize of output 181 [2021-10-21 19:27:17,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 63 [2021-10-21 19:27:19,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:27:19,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:27:43,685 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-21 19:27:43,686 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:27:43,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860844446] [2021-10-21 19:27:43,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-21 19:27:43,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [967656682] [2021-10-21 19:27:43,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:27:43,687 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-21 19:27:43,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/cvc4 [2021-10-21 19:27:43,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-21 19:27:43,693 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-21 19:27:43,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-21 19:27:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:27:46,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-21 19:27:46,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@7e6d74a7 [2021-10-21 19:27:46,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680006699] [2021-10-21 19:27:46,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:27:46,920 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:27:46,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:27:46,921 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:27:46,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 19:27:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:27:47,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 19:27:47,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@7e6d74a7 [2021-10-21 19:27:47,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:27:47,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-21 19:27:47,614 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-21 19:27:47,614 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-21 19:27:47,622 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:27:47,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:27:47,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-10-21 19:27:48,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-21 19:27:48,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1479ebc3-99fe-455d-90ee-730ce7b8663b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:27:48,246 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:27:48,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:27:48 BoogieIcfgContainer [2021-10-21 19:27:48,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:27:48,264 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:27:48,264 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:27:48,264 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:27:48,265 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:25:31" (3/4) ... [2021-10-21 19:27:48,268 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:27:48,269 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:27:48,270 INFO L168 Benchmark]: Toolchain (without parser) took 162249.51 ms. Allocated memory is still 79.7 MB. Free memory was 62.4 MB in the beginning and 33.2 MB in the end (delta: 29.2 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:48,271 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 79.7 MB. Free memory was 59.4 MB in the beginning and 59.3 MB in the end (delta: 60.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:27:48,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 480.74 ms. Allocated memory is still 79.7 MB. Free memory was 62.3 MB in the beginning and 60.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:48,272 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.46 ms. Allocated memory is still 79.7 MB. Free memory was 60.4 MB in the beginning and 58.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:48,273 INFO L168 Benchmark]: Boogie Preprocessor took 48.70 ms. Allocated memory is still 79.7 MB. Free memory was 58.3 MB in the beginning and 56.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:48,274 INFO L168 Benchmark]: RCFGBuilder took 24555.48 ms. Allocated memory is still 79.7 MB. Free memory was 56.3 MB in the beginning and 40.8 MB in the end (delta: 15.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:48,274 INFO L168 Benchmark]: TraceAbstraction took 137092.55 ms. Allocated memory is still 79.7 MB. Free memory was 40.4 MB in the beginning and 33.2 MB in the end (delta: 7.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:48,275 INFO L168 Benchmark]: Witness Printer took 5.21 ms. Allocated memory is still 79.7 MB. Free memory is still 33.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:27:48,278 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 79.7 MB. Free memory was 59.4 MB in the beginning and 59.3 MB in the end (delta: 60.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 480.74 ms. Allocated memory is still 79.7 MB. Free memory was 62.3 MB in the beginning and 60.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.46 ms. Allocated memory is still 79.7 MB. Free memory was 60.4 MB in the beginning and 58.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.70 ms. Allocated memory is still 79.7 MB. Free memory was 58.3 MB in the beginning and 56.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 24555.48 ms. Allocated memory is still 79.7 MB. Free memory was 56.3 MB in the beginning and 40.8 MB in the end (delta: 15.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 137092.55 ms. Allocated memory is still 79.7 MB. Free memory was 40.4 MB in the beginning and 33.2 MB in the end (delta: 7.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.21 ms. Allocated memory is still 79.7 MB. Free memory is still 33.2 MB. 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: 152]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; [L146] double x = 1.0; [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 [L60] COND FALSE !(hx < 0x00100000) [L73] COND FALSE !(hx >= 0x7ff00000) [L75] k += (hx >> 20) - 1023 [L76] hx &= 0x000fffff [L77] i = (hx + 0x95f64) & 0x100000 [L79] ieee_double_shape_type sh_u; [L80] sh_u.value = (x) [L81] sh_u.parts.msw = (hx | (i ^ 0x3ff00000)) [L82] EXPR sh_u.value [L82] (x) = sh_u.value [L84] k += (i >> 20) [L85] f = x - 1.0 [L86] COND TRUE (0x000fffff & (2 + hx)) < 3 [L87] COND FALSE !(f == zero) [L95] R = f * f * (0.5 - 0.33333333333333333 * f) [L96] COND TRUE k == 0 [L97] return f - R; [L148] double res = __ieee754_log(x); [L151] EXPR res == 0.0 && __signbit_double(res) == 0 [L151] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L152] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 136985.4ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 35.9ms, AutomataDifference: 87171.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 37.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 126 SDtfs, 69 SDslu, 329 SDs, 0 SdLazy, 93 SolverSat, 10 SolverUnsat, 37 SolverUnknown, 0 SolverNotchecked, 83321.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 4883.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 44.2ms AutomataMinimizationTime, 4 MinimizatonAttempts, 25 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 62.6ms SsaConstructionTime, 2851.6ms SatisfiabilityAnalysisTime, 8840.5ms InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 102 ConstructedInterpolants, 17 QuantifiedInterpolants, 602 SizeOfPredicates, 19 NumberOfNonLiveVariables, 248 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...