./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_2+newton_1_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa --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 8791b111097588f326aaf544c3865a21bd353d95ed7e15d093f7405d42c088eb --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:28:54,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:28:54,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:28:54,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:28:54,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:28:54,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:28:54,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:28:54,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:28:54,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:28:54,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:28:54,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:28:54,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:28:54,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:28:54,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:28:54,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:28:54,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:28:54,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:28:54,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:28:54,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:28:54,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:28:54,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:28:54,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:28:54,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:28:54,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:28:54,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:28:54,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:28:54,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:28:54,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:28:54,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:28:54,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:28:54,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:28:54,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:28:54,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:28:54,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:28:54,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:28:54,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:28:54,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:28:54,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:28:54,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:28:54,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:28:54,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:28:54,947 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:28:54,968 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:28:54,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:28:54,969 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:28:54,969 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:28:54,969 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:28:54,970 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:28:54,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:28:54,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:28:54,970 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:28:54,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:28:54,971 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:28:54,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:28:54,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:28:54,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:28:54,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:28:54,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:28:54,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:28:54,972 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:28:54,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:28:54,972 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:28:54,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:28:54,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:28:54,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:28:54,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:28:54,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:28:54,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:28:54,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:28:54,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:28:54,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:28:54,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:28:54,974 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:28:54,974 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:28:54,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:28:54,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:28:54,974 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_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8791b111097588f326aaf544c3865a21bd353d95ed7e15d093f7405d42c088eb [2021-12-06 17:28:55,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:28:55,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:28:55,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:28:55,177 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:28:55,178 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:28:55,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/gcd_2+newton_1_4.i [2021-12-06 17:28:55,224 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/data/0798d9f92/781d29c4475f40ec8cf61515de7c294b/FLAGfd1ad5bf1 [2021-12-06 17:28:55,580 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:28:55,581 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/sv-benchmarks/c/combinations/gcd_2+newton_1_4.i [2021-12-06 17:28:55,586 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/data/0798d9f92/781d29c4475f40ec8cf61515de7c294b/FLAGfd1ad5bf1 [2021-12-06 17:28:55,596 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/data/0798d9f92/781d29c4475f40ec8cf61515de7c294b [2021-12-06 17:28:55,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:28:55,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:28:55,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:28:55,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:28:55,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:28:55,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:28:55" (1/1) ... [2021-12-06 17:28:55,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fd6115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:55, skipping insertion in model container [2021-12-06 17:28:55,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:28:55" (1/1) ... [2021-12-06 17:28:55,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:28:55,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:28:55,729 WARN L230 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_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/sv-benchmarks/c/combinations/gcd_2+newton_1_4.i[1226,1239] [2021-12-06 17:28:55,753 WARN L230 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_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/sv-benchmarks/c/combinations/gcd_2+newton_1_4.i[2820,2833] [2021-12-06 17:28:55,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:28:55,762 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:28:55,773 WARN L230 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_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/sv-benchmarks/c/combinations/gcd_2+newton_1_4.i[1226,1239] [2021-12-06 17:28:55,783 WARN L230 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_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/sv-benchmarks/c/combinations/gcd_2+newton_1_4.i[2820,2833] [2021-12-06 17:28:55,784 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:28:55,794 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:28:55,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:55 WrapperNode [2021-12-06 17:28:55,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:28:55,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:28:55,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:28:55,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:28:55,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:55" (1/1) ... [2021-12-06 17:28:55,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:55" (1/1) ... [2021-12-06 17:28:55,832 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-12-06 17:28:55,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:28:55,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:28:55,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:28:55,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:28:55,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:55" (1/1) ... [2021-12-06 17:28:55,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:55" (1/1) ... [2021-12-06 17:28:55,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:55" (1/1) ... [2021-12-06 17:28:55,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:55" (1/1) ... [2021-12-06 17:28:55,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:55" (1/1) ... [2021-12-06 17:28:55,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:55" (1/1) ... [2021-12-06 17:28:55,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:55" (1/1) ... [2021-12-06 17:28:55,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:28:55,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:28:55,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:28:55,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:28:55,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:55" (1/1) ... [2021-12-06 17:28:55,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:28:55,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:28:55,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:28:55,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:28:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:28:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:28:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:28:55,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:28:55,994 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:28:55,995 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:28:56,089 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:28:56,093 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:28:56,093 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 17:28:56,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:28:56 BoogieIcfgContainer [2021-12-06 17:28:56,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:28:56,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:28:56,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:28:56,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:28:56,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:28:55" (1/3) ... [2021-12-06 17:28:56,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713d2392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:28:56, skipping insertion in model container [2021-12-06 17:28:56,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:55" (2/3) ... [2021-12-06 17:28:56,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713d2392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:28:56, skipping insertion in model container [2021-12-06 17:28:56,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:28:56" (3/3) ... [2021-12-06 17:28:56,101 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_4.i [2021-12-06 17:28:56,105 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:28:56,105 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 17:28:56,139 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:28:56,144 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 [2021-12-06 17:28:56,144 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 17:28:56,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:28:56,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 17:28:56,158 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:28:56,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:28:56,159 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:28:56,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:28:56,163 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-06 17:28:56,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:28:56,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821052177] [2021-12-06 17:28:56,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:28:56,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:28:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:28:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:28:56,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:28:56,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821052177] [2021-12-06 17:28:56,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821052177] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:28:56,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:28:56,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:28:56,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174528875] [2021-12-06 17:28:56,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:28:56,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 17:28:56,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:28:56,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 17:28:56,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:28:56,298 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-12-06 17:28:56,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:28:56,314 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-12-06 17:28:56,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 17:28:56,316 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-12-06 17:28:56,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:28:56,321 INFO L225 Difference]: With dead ends: 47 [2021-12-06 17:28:56,321 INFO L226 Difference]: Without dead ends: 19 [2021-12-06 17:28:56,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:28:56,326 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:28:56,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:28:56,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-06 17:28:56,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-06 17:28:56,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:28:56,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-06 17:28:56,350 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-06 17:28:56,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:28:56,351 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-06 17:28:56,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-12-06 17:28:56,351 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-06 17:28:56,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 17:28:56,351 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:28:56,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:28:56,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:28:56,352 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:28:56,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:28:56,353 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-06 17:28:56,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:28:56,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796960688] [2021-12-06 17:28:56,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:28:56,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:28:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 17:28:56,371 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 17:28:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 17:28:56,395 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 17:28:56,395 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 17:28:56,397 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-06 17:28:56,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-06 17:28:56,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 17:28:56,401 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-06 17:28:56,403 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 17:28:56,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:28:56 BoogieIcfgContainer [2021-12-06 17:28:56,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 17:28:56,420 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 17:28:56,420 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 17:28:56,420 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 17:28:56,420 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:28:56" (3/4) ... [2021-12-06 17:28:56,422 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 17:28:56,422 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 17:28:56,423 INFO L158 Benchmark]: Toolchain (without parser) took 823.91ms. Allocated memory is still 121.6MB. Free memory was 79.2MB in the beginning and 67.0MB in the end (delta: 12.3MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2021-12-06 17:28:56,423 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory is still 95.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:28:56,424 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.87ms. Allocated memory is still 121.6MB. Free memory was 79.0MB in the beginning and 67.8MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 17:28:56,424 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.34ms. Allocated memory is still 121.6MB. Free memory was 67.7MB in the beginning and 66.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:28:56,425 INFO L158 Benchmark]: Boogie Preprocessor took 24.80ms. Allocated memory is still 121.6MB. Free memory was 66.0MB in the beginning and 64.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:28:56,425 INFO L158 Benchmark]: RCFGBuilder took 235.79ms. Allocated memory is still 121.6MB. Free memory was 64.6MB in the beginning and 91.2MB in the end (delta: -26.6MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2021-12-06 17:28:56,426 INFO L158 Benchmark]: TraceAbstraction took 322.93ms. Allocated memory is still 121.6MB. Free memory was 90.7MB in the beginning and 67.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-06 17:28:56,426 INFO L158 Benchmark]: Witness Printer took 2.91ms. Allocated memory is still 121.6MB. Free memory was 67.7MB in the beginning and 67.0MB in the end (delta: 685.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:28:56,429 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory is still 95.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.87ms. Allocated memory is still 121.6MB. Free memory was 79.0MB in the beginning and 67.8MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.34ms. Allocated memory is still 121.6MB. Free memory was 67.7MB in the beginning and 66.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.80ms. Allocated memory is still 121.6MB. Free memory was 66.0MB in the beginning and 64.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 235.79ms. Allocated memory is still 121.6MB. Free memory was 64.6MB in the beginning and 91.2MB in the end (delta: -26.6MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * TraceAbstraction took 322.93ms. Allocated memory is still 121.6MB. Free memory was 90.7MB in the beginning and 67.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 2.91ms. Allocated memory is still 121.6MB. Free memory was 67.7MB in the beginning and 67.0MB in the end (delta: 685.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 102]: 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 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 93. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=49] [L102] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: 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, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-06 17:28:56,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa --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 8791b111097588f326aaf544c3865a21bd353d95ed7e15d093f7405d42c088eb --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:28:57,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:28:57,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:28:58,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:28:58,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:28:58,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:28:58,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:28:58,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:28:58,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:28:58,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:28:58,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:28:58,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:28:58,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:28:58,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:28:58,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:28:58,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:28:58,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:28:58,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:28:58,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:28:58,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:28:58,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:28:58,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:28:58,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:28:58,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:28:58,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:28:58,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:28:58,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:28:58,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:28:58,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:28:58,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:28:58,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:28:58,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:28:58,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:28:58,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:28:58,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:28:58,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:28:58,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:28:58,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:28:58,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:28:58,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:28:58,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:28:58,046 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-06 17:28:58,064 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:28:58,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:28:58,065 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:28:58,065 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:28:58,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:28:58,066 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:28:58,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:28:58,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:28:58,066 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:28:58,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:28:58,067 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:28:58,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:28:58,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:28:58,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:28:58,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:28:58,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:28:58,067 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 17:28:58,068 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 17:28:58,068 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 17:28:58,068 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:28:58,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:28:58,068 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:28:58,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:28:58,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:28:58,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:28:58,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:28:58,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:28:58,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:28:58,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:28:58,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:28:58,069 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 17:28:58,069 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 17:28:58,070 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:28:58,070 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:28:58,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:28:58,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:28:58,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 17:28:58,070 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_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8791b111097588f326aaf544c3865a21bd353d95ed7e15d093f7405d42c088eb [2021-12-06 17:28:58,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:28:58,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:28:58,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:28:58,305 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:28:58,305 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:28:58,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/gcd_2+newton_1_4.i [2021-12-06 17:28:58,355 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/data/ec852bf69/b83d9163834f4384a96e4a5b38f1769f/FLAG5f35571a9 [2021-12-06 17:28:58,729 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:28:58,730 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/sv-benchmarks/c/combinations/gcd_2+newton_1_4.i [2021-12-06 17:28:58,735 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/data/ec852bf69/b83d9163834f4384a96e4a5b38f1769f/FLAG5f35571a9 [2021-12-06 17:28:58,745 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/data/ec852bf69/b83d9163834f4384a96e4a5b38f1769f [2021-12-06 17:28:58,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:28:58,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:28:58,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:28:58,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:28:58,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:28:58,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:28:58" (1/1) ... [2021-12-06 17:28:58,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f86a6e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:58, skipping insertion in model container [2021-12-06 17:28:58,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:28:58" (1/1) ... [2021-12-06 17:28:58,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:28:58,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:28:58,882 WARN L230 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_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/sv-benchmarks/c/combinations/gcd_2+newton_1_4.i[1226,1239] [2021-12-06 17:28:58,916 WARN L230 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_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/sv-benchmarks/c/combinations/gcd_2+newton_1_4.i[2820,2833] [2021-12-06 17:28:58,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:28:58,929 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:28:58,941 WARN L230 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_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/sv-benchmarks/c/combinations/gcd_2+newton_1_4.i[1226,1239] [2021-12-06 17:28:58,953 WARN L230 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_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/sv-benchmarks/c/combinations/gcd_2+newton_1_4.i[2820,2833] [2021-12-06 17:28:58,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:28:58,968 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:28:58,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:58 WrapperNode [2021-12-06 17:28:58,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:28:58,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:28:58,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:28:58,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:28:58,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:58" (1/1) ... [2021-12-06 17:28:58,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:58" (1/1) ... [2021-12-06 17:28:59,009 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-12-06 17:28:59,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:28:59,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:28:59,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:28:59,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:28:59,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:58" (1/1) ... [2021-12-06 17:28:59,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:58" (1/1) ... [2021-12-06 17:28:59,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:58" (1/1) ... [2021-12-06 17:28:59,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:58" (1/1) ... [2021-12-06 17:28:59,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:58" (1/1) ... [2021-12-06 17:28:59,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:58" (1/1) ... [2021-12-06 17:28:59,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:58" (1/1) ... [2021-12-06 17:28:59,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:28:59,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:28:59,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:28:59,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:28:59,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:58" (1/1) ... [2021-12-06 17:28:59,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:28:59,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:28:59,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:28:59,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:28:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:28:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 17:28:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:28:59,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:28:59,148 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:28:59,149 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:29:04,997 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:29:05,002 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:29:05,003 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 17:29:05,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:29:05 BoogieIcfgContainer [2021-12-06 17:29:05,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:29:05,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:29:05,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:29:05,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:29:05,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:28:58" (1/3) ... [2021-12-06 17:29:05,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b646586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:29:05, skipping insertion in model container [2021-12-06 17:29:05,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:28:58" (2/3) ... [2021-12-06 17:29:05,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b646586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:29:05, skipping insertion in model container [2021-12-06 17:29:05,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:29:05" (3/3) ... [2021-12-06 17:29:05,011 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_4.i [2021-12-06 17:29:05,015 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:29:05,015 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 17:29:05,048 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:29:05,053 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 [2021-12-06 17:29:05,053 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 17:29:05,063 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:29:05,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 17:29:05,066 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:29:05,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:29:05,067 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:29:05,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:29:05,071 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-06 17:29:05,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:29:05,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138876721] [2021-12-06 17:29:05,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:29:05,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:29:05,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:29:05,082 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:29:05,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 17:29:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:29:06,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 17:29:06,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:29:06,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:29:06,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:29:06,198 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:29:06,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138876721] [2021-12-06 17:29:06,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138876721] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:29:06,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:29:06,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:29:06,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421052044] [2021-12-06 17:29:06,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:29:06,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 17:29:06,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:29:06,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 17:29:06,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:29:06,227 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-12-06 17:29:06,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:29:06,238 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-12-06 17:29:06,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 17:29:06,239 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-12-06 17:29:06,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:29:06,245 INFO L225 Difference]: With dead ends: 47 [2021-12-06 17:29:06,245 INFO L226 Difference]: Without dead ends: 19 [2021-12-06 17:29:06,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:29:06,249 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:29:06,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:29:06,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-06 17:29:06,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-06 17:29:06,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:29:06,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-06 17:29:06,272 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-06 17:29:06,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:29:06,272 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-06 17:29:06,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-12-06 17:29:06,273 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-06 17:29:06,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 17:29:06,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:29:06,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:29:06,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:29:06,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:29:06,476 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:29:06,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:29:06,479 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-06 17:29:06,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:29:06,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146037210] [2021-12-06 17:29:06,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:29:06,482 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:29:06,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:29:06,486 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:29:06,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 17:29:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 17:29:11,777 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 17:31:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 17:31:04,799 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-06 17:31:04,799 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 17:31:04,800 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-06 17:31:04,802 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-06 17:31:04,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 17:31:05,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:31:05,014 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-06 17:31:05,017 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 17:31:05,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:31:05 BoogieIcfgContainer [2021-12-06 17:31:05,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 17:31:05,043 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 17:31:05,043 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 17:31:05,043 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 17:31:05,043 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:29:05" (3/4) ... [2021-12-06 17:31:05,044 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 17:31:05,073 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 17:31:05,073 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 17:31:05,074 INFO L158 Benchmark]: Toolchain (without parser) took 126325.70ms. Allocated memory was 58.7MB in the beginning and 90.2MB in the end (delta: 31.5MB). Free memory was 37.3MB in the beginning and 70.0MB in the end (delta: -32.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:31:05,074 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:31:05,075 INFO L158 Benchmark]: CACSL2BoogieTranslator took 220.41ms. Allocated memory is still 58.7MB. Free memory was 37.2MB in the beginning and 40.0MB in the end (delta: -2.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 17:31:05,075 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.93ms. Allocated memory is still 58.7MB. Free memory was 39.8MB in the beginning and 38.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:31:05,076 INFO L158 Benchmark]: Boogie Preprocessor took 29.07ms. Allocated memory is still 58.7MB. Free memory was 38.1MB in the beginning and 36.6MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 17:31:05,076 INFO L158 Benchmark]: RCFGBuilder took 5964.00ms. Allocated memory was 58.7MB in the beginning and 90.2MB in the end (delta: 31.5MB). Free memory was 36.6MB in the beginning and 72.2MB in the end (delta: -35.5MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2021-12-06 17:31:05,077 INFO L158 Benchmark]: TraceAbstraction took 120036.43ms. Allocated memory is still 90.2MB. Free memory was 71.8MB in the beginning and 72.1MB in the end (delta: -365.7kB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2021-12-06 17:31:05,077 INFO L158 Benchmark]: Witness Printer took 30.37ms. Allocated memory is still 90.2MB. Free memory was 72.1MB in the beginning and 70.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:31:05,080 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 220.41ms. Allocated memory is still 58.7MB. Free memory was 37.2MB in the beginning and 40.0MB in the end (delta: -2.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.93ms. Allocated memory is still 58.7MB. Free memory was 39.8MB in the beginning and 38.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.07ms. Allocated memory is still 58.7MB. Free memory was 38.1MB in the beginning and 36.6MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 5964.00ms. Allocated memory was 58.7MB in the beginning and 90.2MB in the end (delta: 31.5MB). Free memory was 36.6MB in the beginning and 72.2MB in the end (delta: -35.5MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * TraceAbstraction took 120036.43ms. Allocated memory is still 90.2MB. Free memory was 71.8MB in the beginning and 72.1MB in the end (delta: -365.7kB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. * Witness Printer took 30.37ms. Allocated memory is still 90.2MB. Free memory was 72.1MB in the beginning and 70.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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 - CounterExampleResult [Line: 102]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=-0.7463518977165222, \result=-0.6790159344673157, x=-0.7463518977165222] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-0.7463518977165222, \result=0.7346484661102295, x=-0.7463518977165222] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=-0.7463518977165222, x=0.1779213547706604] [L102] reach_error() VAL [IN=-0.7463518977165222, x=0.1779213547706604] - UnprovableResult [Line: 27]: 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, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 120.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 6.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-06 17:31:05,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_497f9cb3-206a-4b02-93a2-3b9b0f2e1f1d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE