./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float12.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_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/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_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/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_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/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 b8cf5878e44758bfdbe03c47ec0115857e08941dc4678f844d9c655b0bc177ba .......................................................................................................................................................................................................................................... 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_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/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_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/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_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/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 b8cf5878e44758bfdbe03c47ec0115857e08941dc4678f844d9c655b0bc177ba ..................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:17:38,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:17:38,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:17:38,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:17:38,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:17:38,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:17:38,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:17:38,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:17:38,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:17:38,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:17:38,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:17:38,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:17:38,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:17:38,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:17:38,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:17:38,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:17:38,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:17:38,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:17:38,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:17:38,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:17:38,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:17:38,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:17:38,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:17:38,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:17:38,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:17:38,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:17:38,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:17:38,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:17:38,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:17:38,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:17:38,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:17:38,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:17:38,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:17:38,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:17:38,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:17:38,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:17:38,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:17:38,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:17:38,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:17:38,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:17:38,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:17:38,680 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:17:38,740 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:17:38,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:17:38,741 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:17:38,741 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:17:38,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:17:38,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:17:38,751 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:17:38,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:17:38,752 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:17:38,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:17:38,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:17:38,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:17:38,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:17:38,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:17:38,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:17:38,753 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:17:38,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:17:38,754 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:17:38,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:17:38,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:17:38,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:17:38,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:17:38,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:17:38,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:17:38,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:17:38,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:17:38,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:17:38,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:17:38,757 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:17:38,757 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:17:38,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:17:38,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:17:38,758 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_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8cf5878e44758bfdbe03c47ec0115857e08941dc4678f844d9c655b0bc177ba [2021-10-21 19:17:39,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:17:39,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:17:39,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:17:39,203 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:17:39,204 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:17:39,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/floats-cbmc-regression/float12.c [2021-10-21 19:17:39,298 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/data/b5921fefa/f3c2c7bf3fa4434c905a21af29f669fd/FLAG9b1c6e8cd [2021-10-21 19:17:39,858 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:17:39,860 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/sv-benchmarks/c/floats-cbmc-regression/float12.c [2021-10-21 19:17:39,876 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/data/b5921fefa/f3c2c7bf3fa4434c905a21af29f669fd/FLAG9b1c6e8cd [2021-10-21 19:17:40,205 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/data/b5921fefa/f3c2c7bf3fa4434c905a21af29f669fd [2021-10-21 19:17:40,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:17:40,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:17:40,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:17:40,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:17:40,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:17:40,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:17:40" (1/1) ... [2021-10-21 19:17:40,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a0ea55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:40, skipping insertion in model container [2021-10-21 19:17:40,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:17:40" (1/1) ... [2021-10-21 19:17:40,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:17:40,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:17:40,421 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_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/sv-benchmarks/c/floats-cbmc-regression/float12.c[500,513] [2021-10-21 19:17:40,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:17:40,437 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:17:40,454 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_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/sv-benchmarks/c/floats-cbmc-regression/float12.c[500,513] [2021-10-21 19:17:40,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:17:40,512 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:17:40,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:40 WrapperNode [2021-10-21 19:17:40,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:17:40,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:17:40,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:17:40,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:17:40,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:40" (1/1) ... [2021-10-21 19:17:40,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:40" (1/1) ... [2021-10-21 19:17:40,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:17:40,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:17:40,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:17:40,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:17:40,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:40" (1/1) ... [2021-10-21 19:17:40,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:40" (1/1) ... [2021-10-21 19:17:40,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:40" (1/1) ... [2021-10-21 19:17:40,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:40" (1/1) ... [2021-10-21 19:17:40,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:40" (1/1) ... [2021-10-21 19:17:40,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:40" (1/1) ... [2021-10-21 19:17:40,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:40" (1/1) ... [2021-10-21 19:17:40,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:17:40,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:17:40,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:17:40,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:17:40,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:40" (1/1) ... [2021-10-21 19:17:40,630 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:17:40,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:17:40,661 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:17:40,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:17:40,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:17:40,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:17:40,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:17:40,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:17:40,923 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:17:40,923 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 19:17:40,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:17:40 BoogieIcfgContainer [2021-10-21 19:17:40,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:17:40,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:17:40,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:17:40,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:17:40,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:17:40" (1/3) ... [2021-10-21 19:17:40,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6e9a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:17:40, skipping insertion in model container [2021-10-21 19:17:40,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:40" (2/3) ... [2021-10-21 19:17:40,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6e9a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:17:40, skipping insertion in model container [2021-10-21 19:17:40,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:17:40" (3/3) ... [2021-10-21 19:17:40,936 INFO L111 eAbstractionObserver]: Analyzing ICFG float12.c [2021-10-21 19:17:40,943 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:17:40,943 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:17:41,003 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:17:41,012 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 19:17:41,012 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:17:41,030 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 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 19:17:41,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-21 19:17:41,036 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:17:41,036 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-21 19:17:41,037 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:17:41,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:17:41,044 INFO L82 PathProgramCache]: Analyzing trace with hash 28693795, now seen corresponding path program 1 times [2021-10-21 19:17:41,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:17:41,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558402097] [2021-10-21 19:17:41,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:17:41,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:17:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:17:41,180 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:17:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:17:41,247 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:17:41,250 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:17:41,251 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:17:41,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:17:41,262 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:17:41,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:17:41 BoogieIcfgContainer [2021-10-21 19:17:41,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:17:41,286 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:17:41,286 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:17:41,286 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:17:41,287 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:17:40" (3/4) ... [2021-10-21 19:17:41,290 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:17:41,290 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:17:41,293 INFO L168 Benchmark]: Toolchain (without parser) took 1082.39 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 49.7 MB in the beginning and 60.8 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:17:41,294 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory is still 65.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:17:41,295 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.29 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 49.5 MB in the beginning and 85.7 MB in the end (delta: -36.2 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:17:41,296 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.03 ms. Allocated memory is still 107.0 MB. Free memory was 85.7 MB in the beginning and 84.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:17:41,297 INFO L168 Benchmark]: Boogie Preprocessor took 39.74 ms. Allocated memory is still 107.0 MB. Free memory was 84.2 MB in the beginning and 83.3 MB in the end (delta: 851.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:17:41,298 INFO L168 Benchmark]: RCFGBuilder took 309.18 ms. Allocated memory is still 107.0 MB. Free memory was 83.3 MB in the beginning and 74.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:17:41,299 INFO L168 Benchmark]: TraceAbstraction took 357.64 ms. Allocated memory is still 107.0 MB. Free memory was 74.1 MB in the beginning and 61.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:17:41,300 INFO L168 Benchmark]: Witness Printer took 4.76 ms. Allocated memory is still 107.0 MB. Free memory was 61.1 MB in the beginning and 60.8 MB in the end (delta: 367.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:17:41,304 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory is still 65.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.29 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 49.5 MB in the beginning and 85.7 MB in the end (delta: -36.2 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.03 ms. Allocated memory is still 107.0 MB. Free memory was 85.7 MB in the beginning and 84.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.74 ms. Allocated memory is still 107.0 MB. Free memory was 84.2 MB in the beginning and 83.3 MB in the end (delta: 851.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 309.18 ms. Allocated memory is still 107.0 MB. Free memory was 83.3 MB in the beginning and 74.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 357.64 ms. Allocated memory is still 107.0 MB. Free memory was 74.1 MB in the beginning and 61.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.76 ms. Allocated memory is still 107.0 MB. Free memory was 61.1 MB in the beginning and 60.8 MB in the end (delta: 367.2 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: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L8] float f = __VERIFIER_nondet_float(); [L9] double d; [L10] unsigned char x = __VERIFIER_nondet_uchar(); [L12] d=f [L14] COND TRUE f==x [L15] COND TRUE !(d==x) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 259.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 10.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.0ms SsaConstructionTime, 49.7ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 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 [2021-10-21 19:17:41,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/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 19:17:44,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:17:44,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:17:44,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:17:44,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:17:44,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:17:44,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:17:44,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:17:44,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:17:44,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:17:44,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:17:44,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:17:44,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:17:44,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:17:44,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:17:44,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:17:44,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:17:44,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:17:44,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:17:44,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:17:44,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:17:44,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:17:44,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:17:44,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:17:44,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:17:44,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:17:44,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:17:44,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:17:44,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:17:44,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:17:44,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:17:44,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:17:44,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:17:44,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:17:44,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:17:44,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:17:44,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:17:44,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:17:44,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:17:44,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:17:44,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:17:44,522 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 19:17:44,582 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:17:44,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:17:44,583 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:17:44,584 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:17:44,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:17:44,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:17:44,587 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:17:44,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:17:44,587 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:17:44,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:17:44,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:17:44,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:17:44,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:17:44,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:17:44,590 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 19:17:44,590 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 19:17:44,591 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:17:44,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:17:44,591 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:17:44,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:17:44,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:17:44,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:17:44,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:17:44,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:17:44,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:17:44,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:17:44,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:17:44,594 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 19:17:44,594 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 19:17:44,594 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:17:44,595 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:17:44,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:17:44,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:17:44,595 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 19:17:44,596 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_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8cf5878e44758bfdbe03c47ec0115857e08941dc4678f844d9c655b0bc177ba [2021-10-21 19:17:45,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:17:45,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:17:45,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:17:45,089 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:17:45,090 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:17:45,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/floats-cbmc-regression/float12.c [2021-10-21 19:17:45,180 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/data/d827ef563/cebfa10f57a04cb8b95526c8f6fe797b/FLAG3eba16fe9 [2021-10-21 19:17:45,845 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:17:45,846 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/sv-benchmarks/c/floats-cbmc-regression/float12.c [2021-10-21 19:17:45,853 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/data/d827ef563/cebfa10f57a04cb8b95526c8f6fe797b/FLAG3eba16fe9 [2021-10-21 19:17:46,198 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/data/d827ef563/cebfa10f57a04cb8b95526c8f6fe797b [2021-10-21 19:17:46,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:17:46,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:17:46,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:17:46,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:17:46,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:17:46,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:17:46" (1/1) ... [2021-10-21 19:17:46,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30affa8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:46, skipping insertion in model container [2021-10-21 19:17:46,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:17:46" (1/1) ... [2021-10-21 19:17:46,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:17:46,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:17:46,402 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_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/sv-benchmarks/c/floats-cbmc-regression/float12.c[500,513] [2021-10-21 19:17:46,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:17:46,426 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:17:46,449 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_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/sv-benchmarks/c/floats-cbmc-regression/float12.c[500,513] [2021-10-21 19:17:46,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:17:46,486 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:17:46,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:46 WrapperNode [2021-10-21 19:17:46,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:17:46,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:17:46,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:17:46,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:17:46,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:46" (1/1) ... [2021-10-21 19:17:46,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:46" (1/1) ... [2021-10-21 19:17:46,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:17:46,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:17:46,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:17:46,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:17:46,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:46" (1/1) ... [2021-10-21 19:17:46,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:46" (1/1) ... [2021-10-21 19:17:46,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:46" (1/1) ... [2021-10-21 19:17:46,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:46" (1/1) ... [2021-10-21 19:17:46,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:46" (1/1) ... [2021-10-21 19:17:46,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:46" (1/1) ... [2021-10-21 19:17:46,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:46" (1/1) ... [2021-10-21 19:17:46,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:17:46,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:17:46,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:17:46,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:17:46,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:46" (1/1) ... [2021-10-21 19:17:46,643 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:17:46,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:17:46,680 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:17:46,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:17:46,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 19:17:46,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:17:46,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:17:46,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:17:47,157 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:17:47,157 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 19:17:47,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:17:47 BoogieIcfgContainer [2021-10-21 19:17:47,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:17:47,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:17:47,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:17:47,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:17:47,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:17:46" (1/3) ... [2021-10-21 19:17:47,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f887b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:17:47, skipping insertion in model container [2021-10-21 19:17:47,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:17:46" (2/3) ... [2021-10-21 19:17:47,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f887b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:17:47, skipping insertion in model container [2021-10-21 19:17:47,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:17:47" (3/3) ... [2021-10-21 19:17:47,170 INFO L111 eAbstractionObserver]: Analyzing ICFG float12.c [2021-10-21 19:17:47,177 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:17:47,177 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:17:47,244 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:17:47,253 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 19:17:47,253 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:17:47,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 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 19:17:47,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-21 19:17:47,278 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:17:47,279 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-21 19:17:47,280 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:17:47,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:17:47,288 INFO L82 PathProgramCache]: Analyzing trace with hash 28693795, now seen corresponding path program 1 times [2021-10-21 19:17:47,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:17:47,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512139242] [2021-10-21 19:17:47,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:17:47,305 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:17:47,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:17:47,317 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:17:47,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 19:17:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:17:47,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:17:47,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:17:49,661 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 19:17:49,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:17:53,531 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 19:17:53,533 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:17:53,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512139242] [2021-10-21 19:17:53,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512139242] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:17:53,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:17:53,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-21 19:17:53,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593259894] [2021-10-21 19:17:53,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:17:53,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:17:53,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:17:53,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:17:53,565 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 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) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:59,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:17:59,023 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2021-10-21 19:17:59,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:17:59,036 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-21 19:17:59,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:17:59,042 INFO L225 Difference]: With dead ends: 15 [2021-10-21 19:17:59,043 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:17:59,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8077.0ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:17:59,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:17:59,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:17:59,065 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) [2021-10-21 19:17:59,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:17:59,066 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-10-21 19:17:59,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:17:59,067 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:17:59,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:59,067 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:17:59,068 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:17:59,070 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:17:59,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:17:59,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:17:59,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:17:59,285 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:17:59,285 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 19:17:59,285 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:17:59,285 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:17:59,286 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-10-21 19:17:59,286 INFO L857 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2021-10-21 19:17:59,286 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed. [2021-10-21 19:17:59,287 INFO L857 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-10-21 19:17:59,287 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 16) no Hoare annotation was computed. [2021-10-21 19:17:59,291 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:17:59,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:17:59 BoogieIcfgContainer [2021-10-21 19:17:59,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:17:59,295 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:17:59,296 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:17:59,296 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:17:59,297 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:17:47" (3/4) ... [2021-10-21 19:17:59,300 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:17:59,313 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-21 19:17:59,314 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:17:59,314 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-21 19:17:59,314 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:17:59,353 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:17:59,354 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:17:59,356 INFO L168 Benchmark]: Toolchain (without parser) took 13152.53 ms. Allocated memory was 60.8 MB in the beginning and 83.9 MB in the end (delta: 23.1 MB). Free memory was 40.9 MB in the beginning and 52.5 MB in the end (delta: -11.6 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:17:59,357 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 60.8 MB. Free memory is still 41.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:17:59,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.77 ms. Allocated memory is still 60.8 MB. Free memory was 40.8 MB in the beginning and 45.4 MB in the end (delta: -4.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:17:59,358 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.36 ms. Allocated memory is still 60.8 MB. Free memory was 45.4 MB in the beginning and 43.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:17:59,359 INFO L168 Benchmark]: Boogie Preprocessor took 52.85 ms. Allocated memory is still 60.8 MB. Free memory was 43.9 MB in the beginning and 42.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:17:59,360 INFO L168 Benchmark]: RCFGBuilder took 534.04 ms. Allocated memory is still 60.8 MB. Free memory was 42.6 MB in the beginning and 33.7 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:17:59,361 INFO L168 Benchmark]: TraceAbstraction took 12132.83 ms. Allocated memory was 60.8 MB in the beginning and 83.9 MB in the end (delta: 23.1 MB). Free memory was 33.3 MB in the beginning and 54.6 MB in the end (delta: -21.3 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:17:59,362 INFO L168 Benchmark]: Witness Printer took 58.46 ms. Allocated memory is still 83.9 MB. Free memory was 54.6 MB in the beginning and 52.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:17:59,366 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 60.8 MB. Free memory is still 41.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 284.77 ms. Allocated memory is still 60.8 MB. Free memory was 40.8 MB in the beginning and 45.4 MB in the end (delta: -4.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.36 ms. Allocated memory is still 60.8 MB. Free memory was 45.4 MB in the beginning and 43.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.85 ms. Allocated memory is still 60.8 MB. Free memory was 43.9 MB in the beginning and 42.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 534.04 ms. Allocated memory is still 60.8 MB. Free memory was 42.6 MB in the beginning and 33.7 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12132.83 ms. Allocated memory was 60.8 MB in the beginning and 83.9 MB in the end (delta: 23.1 MB). Free memory was 33.3 MB in the beginning and 54.6 MB in the end (delta: -21.3 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. * Witness Printer took 58.46 ms. Allocated memory is still 83.9 MB. Free memory was 54.6 MB in the beginning and 52.5 MB in the end (delta: 2.1 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: 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, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12050.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 12.3ms, AutomataDifference: 5500.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 3.9ms, InitialAbstractionConstructionTime: 12.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6 SDtfs, 13 SDslu, 2 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1030.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8077.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 8.1ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0ms HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 28.4ms SsaConstructionTime, 61.4ms SatisfiabilityAnalysisTime, 6057.6ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 2 QuantifiedInterpolants, 39 SizeOfPredicates, 6 NumberOfNonLiveVariables, 28 ConjunctsInSsa, 3 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-21 19:17:59,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b5f8ed-48dd-4c8e-8cf9-22df82fbe0c9/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...