./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg --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 40f0987d901db247b49723cd7ff4aa66943e9671f8ac5275af8edcf28fe04092 ................................................................................................................................................................................................................................................. 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_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg --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 40f0987d901db247b49723cd7ff4aa66943e9671f8ac5275af8edcf28fe04092 .............................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:36:01,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:36:01,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:36:01,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:36:01,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:36:01,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:36:01,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:36:01,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:36:01,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:36:01,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:36:01,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:36:01,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:36:01,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:36:01,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:36:01,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:36:01,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:36:01,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:36:01,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:36:01,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:36:01,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:36:01,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:36:01,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:36:01,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:36:01,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:36:01,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:36:01,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:36:01,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:36:01,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:36:01,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:36:01,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:36:01,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:36:01,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:36:01,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:36:01,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:36:01,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:36:01,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:36:01,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:36:01,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:36:01,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:36:01,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:36:01,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:36:01,518 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:36:01,570 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:36:01,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:36:01,571 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:36:01,572 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:36:01,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:36:01,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:36:01,581 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:36:01,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:36:01,581 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:36:01,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:36:01,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:36:01,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:36:01,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:36:01,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:36:01,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:36:01,584 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:36:01,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:36:01,585 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:36:01,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:36:01,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:36:01,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:36:01,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:36:01,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:36:01,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:36:01,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:36:01,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:36:01,587 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:36:01,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:36:01,588 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:36:01,588 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:36:01,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:36:01,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:36:01,589 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_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40f0987d901db247b49723cd7ff4aa66943e9671f8ac5275af8edcf28fe04092 [2021-10-28 09:36:01,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:36:01,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:36:01,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:36:01,949 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:36:01,950 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:36:01,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/floats-cbmc-regression/float1.c [2021-10-28 09:36:02,016 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/data/56a057934/602fb04d728a429483dce1d12f51b791/FLAG608006230 [2021-10-28 09:36:02,663 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:36:02,664 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/sv-benchmarks/c/floats-cbmc-regression/float1.c [2021-10-28 09:36:02,676 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/data/56a057934/602fb04d728a429483dce1d12f51b791/FLAG608006230 [2021-10-28 09:36:03,048 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/data/56a057934/602fb04d728a429483dce1d12f51b791 [2021-10-28 09:36:03,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:36:03,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:36:03,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:36:03,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:36:03,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:36:03,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:36:03" (1/1) ... [2021-10-28 09:36:03,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62fbfb24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:03, skipping insertion in model container [2021-10-28 09:36:03,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:36:03" (1/1) ... [2021-10-28 09:36:03,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:36:03,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:36:03,300 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_3dac10e2-9b3c-4c44-b846-ab19428008b8/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2021-10-28 09:36:03,304 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_3dac10e2-9b3c-4c44-b846-ab19428008b8/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2021-10-28 09:36:03,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:36:03,317 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:36:03,331 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_3dac10e2-9b3c-4c44-b846-ab19428008b8/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2021-10-28 09:36:03,332 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_3dac10e2-9b3c-4c44-b846-ab19428008b8/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2021-10-28 09:36:03,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:36:03,348 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:36:03,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:03 WrapperNode [2021-10-28 09:36:03,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:36:03,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:36:03,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:36:03,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:36:03,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:03" (1/1) ... [2021-10-28 09:36:03,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:03" (1/1) ... [2021-10-28 09:36:03,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:36:03,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:36:03,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:36:03,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:36:03,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:03" (1/1) ... [2021-10-28 09:36:03,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:03" (1/1) ... [2021-10-28 09:36:03,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:03" (1/1) ... [2021-10-28 09:36:03,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:03" (1/1) ... [2021-10-28 09:36:03,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:03" (1/1) ... [2021-10-28 09:36:03,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:03" (1/1) ... [2021-10-28 09:36:03,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:03" (1/1) ... [2021-10-28 09:36:03,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:36:03,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:36:03,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:36:03,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:36:03,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:03" (1/1) ... [2021-10-28 09:36:03,419 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:36:03,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:36:03,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:36:03,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:36:03,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:36:03,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:36:03,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:36:03,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:36:03,674 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:36:03,675 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 09:36:03,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:36:03 BoogieIcfgContainer [2021-10-28 09:36:03,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:36:03,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:36:03,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:36:03,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:36:03,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:36:03" (1/3) ... [2021-10-28 09:36:03,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1718b8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:36:03, skipping insertion in model container [2021-10-28 09:36:03,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:03" (2/3) ... [2021-10-28 09:36:03,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1718b8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:36:03, skipping insertion in model container [2021-10-28 09:36:03,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:36:03" (3/3) ... [2021-10-28 09:36:03,691 INFO L111 eAbstractionObserver]: Analyzing ICFG float1.c [2021-10-28 09:36:03,697 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:36:03,697 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-28 09:36:03,785 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:36:03,798 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 [2021-10-28 09:36:03,798 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-28 09:36:03,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 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) [2021-10-28 09:36:03,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-28 09:36:03,825 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:36:03,826 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-28 09:36:03,827 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:36:03,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:36:03,835 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-28 09:36:03,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:36:03,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568820155] [2021-10-28 09:36:03,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:36:03,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:36:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:36:03,986 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:36:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:36:04,062 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:36:04,073 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:36:04,076 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:36:04,081 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:36:04,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:36:04,090 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-28 09:36:04,093 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:36:04,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:36:04 BoogieIcfgContainer [2021-10-28 09:36:04,117 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:36:04,121 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:36:04,122 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:36:04,122 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:36:04,123 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:36:03" (3/4) ... [2021-10-28 09:36:04,126 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:36:04,126 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:36:04,130 INFO L168 Benchmark]: Toolchain (without parser) took 1074.55 ms. Allocated memory is still 107.0 MB. Free memory was 78.3 MB in the beginning and 57.3 MB in the end (delta: 21.1 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:36:04,131 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 107.0 MB. Free memory is still 59.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:36:04,132 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.30 ms. Allocated memory is still 107.0 MB. Free memory was 78.1 MB in the beginning and 81.6 MB in the end (delta: -3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:36:04,134 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.85 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 80.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:36:04,136 INFO L168 Benchmark]: Boogie Preprocessor took 20.71 ms. Allocated memory is still 107.0 MB. Free memory was 80.0 MB in the beginning and 79.3 MB in the end (delta: 730.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:36:04,137 INFO L168 Benchmark]: RCFGBuilder took 268.12 ms. Allocated memory is still 107.0 MB. Free memory was 79.0 MB in the beginning and 70.6 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:36:04,145 INFO L168 Benchmark]: TraceAbstraction took 438.56 ms. Allocated memory is still 107.0 MB. Free memory was 70.1 MB in the beginning and 57.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:36:04,147 INFO L168 Benchmark]: Witness Printer took 4.95 ms. Allocated memory is still 107.0 MB. Free memory was 57.7 MB in the beginning and 57.3 MB in the end (delta: 477.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:36:04,156 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 107.0 MB. Free memory is still 59.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 283.30 ms. Allocated memory is still 107.0 MB. Free memory was 78.1 MB in the beginning and 81.6 MB in the end (delta: -3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.85 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 80.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.71 ms. Allocated memory is still 107.0 MB. Free memory was 80.0 MB in the beginning and 79.3 MB in the end (delta: 730.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 268.12 ms. Allocated memory is still 107.0 MB. Free memory was 79.0 MB in the beginning and 70.6 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 438.56 ms. Allocated memory is still 107.0 MB. Free memory was 70.1 MB in the beginning and 57.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.95 ms. Allocated memory is still 107.0 MB. Free memory was 57.7 MB in the beginning and 57.3 MB in the end (delta: 477.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 10, overapproximation of someBinaryArithmeticDOUBLEoperation at line 9, overapproximation of to_real at line 8. Possible FailurePath: [L5] double x; [L6] int y; [L8] x=2 [L9] x-=0.6 [L10] y=x [L12] COND TRUE !(y==1) [L12] reach_error() - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 09:36:04,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/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-b2eff8b [2021-10-28 09:36:06,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:36:06,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:36:07,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:36:07,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:36:07,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:36:07,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:36:07,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:36:07,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:36:07,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:36:07,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:36:07,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:36:07,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:36:07,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:36:07,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:36:07,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:36:07,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:36:07,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:36:07,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:36:07,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:36:07,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:36:07,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:36:07,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:36:07,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:36:07,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:36:07,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:36:07,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:36:07,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:36:07,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:36:07,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:36:07,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:36:07,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:36:07,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:36:07,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:36:07,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:36:07,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:36:07,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:36:07,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:36:07,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:36:07,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:36:07,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:36:07,145 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 09:36:07,202 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:36:07,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:36:07,203 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:36:07,203 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:36:07,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:36:07,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:36:07,206 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:36:07,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:36:07,207 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:36:07,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:36:07,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:36:07,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:36:07,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:36:07,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:36:07,211 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:36:07,211 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:36:07,211 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:36:07,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:36:07,211 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:36:07,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:36:07,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:36:07,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:36:07,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:36:07,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:36:07,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:36:07,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:36:07,213 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:36:07,214 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:36:07,214 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:36:07,214 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:36:07,214 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:36:07,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:36:07,215 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:36:07,215 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:36:07,215 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_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40f0987d901db247b49723cd7ff4aa66943e9671f8ac5275af8edcf28fe04092 [2021-10-28 09:36:07,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:36:07,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:36:07,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:36:07,715 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:36:07,716 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:36:07,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/floats-cbmc-regression/float1.c [2021-10-28 09:36:07,789 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/data/37cb58f7a/cca7a62909af46c383c052313dfb9b82/FLAG2399d3588 [2021-10-28 09:36:08,343 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:36:08,345 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/sv-benchmarks/c/floats-cbmc-regression/float1.c [2021-10-28 09:36:08,353 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/data/37cb58f7a/cca7a62909af46c383c052313dfb9b82/FLAG2399d3588 [2021-10-28 09:36:08,701 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/data/37cb58f7a/cca7a62909af46c383c052313dfb9b82 [2021-10-28 09:36:08,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:36:08,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:36:08,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:36:08,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:36:08,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:36:08,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:36:08" (1/1) ... [2021-10-28 09:36:08,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51bc4920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:08, skipping insertion in model container [2021-10-28 09:36:08,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:36:08" (1/1) ... [2021-10-28 09:36:08,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:36:08,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:36:08,954 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_3dac10e2-9b3c-4c44-b846-ab19428008b8/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2021-10-28 09:36:08,959 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_3dac10e2-9b3c-4c44-b846-ab19428008b8/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2021-10-28 09:36:08,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:36:08,983 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:36:09,007 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_3dac10e2-9b3c-4c44-b846-ab19428008b8/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2021-10-28 09:36:09,009 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_3dac10e2-9b3c-4c44-b846-ab19428008b8/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2021-10-28 09:36:09,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:36:09,027 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:36:09,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:09 WrapperNode [2021-10-28 09:36:09,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:36:09,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:36:09,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:36:09,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:36:09,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:09" (1/1) ... [2021-10-28 09:36:09,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:09" (1/1) ... [2021-10-28 09:36:09,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:36:09,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:36:09,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:36:09,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:36:09,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:09" (1/1) ... [2021-10-28 09:36:09,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:09" (1/1) ... [2021-10-28 09:36:09,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:09" (1/1) ... [2021-10-28 09:36:09,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:09" (1/1) ... [2021-10-28 09:36:09,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:09" (1/1) ... [2021-10-28 09:36:09,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:09" (1/1) ... [2021-10-28 09:36:09,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:09" (1/1) ... [2021-10-28 09:36:09,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:36:09,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:36:09,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:36:09,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:36:09,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:09" (1/1) ... [2021-10-28 09:36:09,181 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:36:09,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:36:09,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:36:09,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:36:09,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:36:09,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:36:09,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:36:09,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:36:10,202 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:36:10,203 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 09:36:10,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:36:10 BoogieIcfgContainer [2021-10-28 09:36:10,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:36:10,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:36:10,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:36:10,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:36:10,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:36:08" (1/3) ... [2021-10-28 09:36:10,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eeb43ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:36:10, skipping insertion in model container [2021-10-28 09:36:10,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:09" (2/3) ... [2021-10-28 09:36:10,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eeb43ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:36:10, skipping insertion in model container [2021-10-28 09:36:10,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:36:10" (3/3) ... [2021-10-28 09:36:10,215 INFO L111 eAbstractionObserver]: Analyzing ICFG float1.c [2021-10-28 09:36:10,221 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:36:10,221 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-28 09:36:10,277 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:36:10,284 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 [2021-10-28 09:36:10,284 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-28 09:36:10,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 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) [2021-10-28 09:36:10,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-28 09:36:10,304 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:36:10,305 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-28 09:36:10,305 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:36:10,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:36:10,312 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-28 09:36:10,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:36:10,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304305237] [2021-10-28 09:36:10,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:36:10,327 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:36:10,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:36:10,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:36:10,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:36:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:36:10,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:36:10,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:36:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:36:10,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:36:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:36:10,906 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:36:10,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304305237] [2021-10-28 09:36:10,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304305237] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:36:10,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:36:10,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-28 09:36:10,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980119078] [2021-10-28 09:36:10,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:36:10,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:36:10,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:36:10,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:36:10,935 INFO L87 Difference]: Start difference. First operand has 12 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-10-28 09:36:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:36:11,256 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-10-28 09:36:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:36:11,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 4 [2021-10-28 09:36:11,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:36:11,264 INFO L225 Difference]: With dead ends: 17 [2021-10-28 09:36:11,265 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 09:36:11,268 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:36:11,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 09:36:11,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 09:36:11,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:36:11,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 09:36:11,298 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-10-28 09:36:11,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:36:11,299 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:36:11,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-10-28 09:36:11,299 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:36:11,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 09:36:11,302 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:36:11,303 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:36:11,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-28 09:36:11,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:36:11,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 09:36:11,521 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 09:36:11,521 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 09:36:11,522 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 09:36:11,522 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 09:36:11,522 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-28 09:36:11,522 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-28 09:36:11,523 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-28 09:36:11,523 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-28 09:36:11,523 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-28 09:36:11,523 INFO L857 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-10-28 09:36:11,524 INFO L857 garLoopResultBuilder]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-10-28 09:36:11,524 INFO L857 garLoopResultBuilder]: For program point L4(lines 4 20) no Hoare annotation was computed. [2021-10-28 09:36:11,527 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-28 09:36:11,529 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:36:11,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:36:11 BoogieIcfgContainer [2021-10-28 09:36:11,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:36:11,534 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:36:11,534 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:36:11,534 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:36:11,535 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:36:10" (3/4) ... [2021-10-28 09:36:11,538 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:36:11,555 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-28 09:36:11,555 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:36:11,556 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-28 09:36:11,556 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:36:11,610 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:36:11,613 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:36:11,615 INFO L168 Benchmark]: Toolchain (without parser) took 2900.22 ms. Allocated memory is still 77.6 MB. Free memory was 42.6 MB in the beginning and 55.4 MB in the end (delta: -12.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:36:11,616 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 58.9 MB in the beginning and 58.8 MB in the end (delta: 66.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:36:11,617 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.73 ms. Allocated memory is still 77.6 MB. Free memory was 42.4 MB in the beginning and 54.7 MB in the end (delta: -12.3 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:36:11,618 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.92 ms. Allocated memory is still 77.6 MB. Free memory was 54.5 MB in the beginning and 61.5 MB in the end (delta: -7.0 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:36:11,618 INFO L168 Benchmark]: Boogie Preprocessor took 41.61 ms. Allocated memory is still 77.6 MB. Free memory was 61.5 MB in the beginning and 60.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:36:11,619 INFO L168 Benchmark]: RCFGBuilder took 1037.87 ms. Allocated memory is still 77.6 MB. Free memory was 60.3 MB in the beginning and 51.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:36:11,620 INFO L168 Benchmark]: TraceAbstraction took 1325.74 ms. Allocated memory is still 77.6 MB. Free memory was 50.6 MB in the beginning and 57.8 MB in the end (delta: -7.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:36:11,620 INFO L168 Benchmark]: Witness Printer took 79.43 ms. Allocated memory is still 77.6 MB. Free memory was 57.8 MB in the beginning and 55.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:36:11,628 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 58.9 MB in the beginning and 58.8 MB in the end (delta: 66.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 312.73 ms. Allocated memory is still 77.6 MB. Free memory was 42.4 MB in the beginning and 54.7 MB in the end (delta: -12.3 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.92 ms. Allocated memory is still 77.6 MB. Free memory was 54.5 MB in the beginning and 61.5 MB in the end (delta: -7.0 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.61 ms. Allocated memory is still 77.6 MB. Free memory was 61.5 MB in the beginning and 60.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1037.87 ms. Allocated memory is still 77.6 MB. Free memory was 60.3 MB in the beginning and 51.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1325.74 ms. Allocated memory is still 77.6 MB. Free memory was 50.6 MB in the beginning and 57.8 MB in the end (delta: -7.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 79.43 ms. Allocated memory is still 77.6 MB. Free memory was 57.8 MB in the beginning and 55.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 3 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 4 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 3 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 09:36:11,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac10e2-9b3c-4c44-b846-ab19428008b8/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...