./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_4+newton_1_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL --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 30996e3a95d093576f36103779b690855817d5b6444d2c5828f5d0db503b2e4f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:34:35,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:34:35,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:34:35,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:34:35,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:34:35,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:34:35,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:34:35,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:34:35,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:34:35,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:34:35,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:34:35,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:34:35,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:34:35,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:34:35,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:34:35,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:34:35,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:34:35,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:34:35,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:34:35,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:34:35,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:34:35,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:34:35,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:34:35,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:34:35,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:34:35,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:34:35,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:34:35,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:34:35,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:34:35,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:34:35,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:34:35,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:34:35,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:34:35,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:34:35,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:34:35,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:34:35,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:34:35,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:34:35,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:34:35,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:34:35,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:34:35,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 05:34:35,641 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:34:35,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:34:35,646 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:34:35,646 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:34:35,654 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:34:35,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:34:35,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:34:35,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:34:35,656 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:34:35,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:34:35,657 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:34:35,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:34:35,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:34:35,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:34:35,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:34:35,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:34:35,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:34:35,659 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:34:35,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:34:35,660 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:34:35,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:34:35,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:34:35,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:34:35,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:34:35,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:34:35,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:34:35,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:34:35,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:34:35,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:34:35,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:34:35,664 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:34:35,664 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:34:35,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:34:35,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:34:35,665 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_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30996e3a95d093576f36103779b690855817d5b6444d2c5828f5d0db503b2e4f [2021-11-19 05:34:35,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:34:35,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:34:35,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:34:35,971 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:34:35,971 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:34:35,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/combinations/gcd_4+newton_1_8.i [2021-11-19 05:34:36,086 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/data/badf26df2/fb5c7fdba1534c80b5a03341201b23e2/FLAG2fb40b6ae [2021-11-19 05:34:36,504 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:34:36,508 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i [2021-11-19 05:34:36,514 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/data/badf26df2/fb5c7fdba1534c80b5a03341201b23e2/FLAG2fb40b6ae [2021-11-19 05:34:36,873 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/data/badf26df2/fb5c7fdba1534c80b5a03341201b23e2 [2021-11-19 05:34:36,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:34:36,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:34:36,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:34:36,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:34:36,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:34:36,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:34:36" (1/1) ... [2021-11-19 05:34:36,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb6ff08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:36, skipping insertion in model container [2021-11-19 05:34:36,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:34:36" (1/1) ... [2021-11-19 05:34:36,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:34:36,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:34:37,085 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_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[1224,1237] [2021-11-19 05:34:37,113 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_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[2806,2819] [2021-11-19 05:34:37,114 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:34:37,133 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:34:37,145 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_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[1224,1237] [2021-11-19 05:34:37,165 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_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[2806,2819] [2021-11-19 05:34:37,172 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:34:37,189 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:34:37,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:37 WrapperNode [2021-11-19 05:34:37,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:34:37,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:34:37,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:34:37,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:34:37,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:37" (1/1) ... [2021-11-19 05:34:37,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:37" (1/1) ... [2021-11-19 05:34:37,251 INFO L137 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 73 [2021-11-19 05:34:37,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:34:37,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:34:37,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:34:37,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:34:37,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:37" (1/1) ... [2021-11-19 05:34:37,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:37" (1/1) ... [2021-11-19 05:34:37,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:37" (1/1) ... [2021-11-19 05:34:37,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:37" (1/1) ... [2021-11-19 05:34:37,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:37" (1/1) ... [2021-11-19 05:34:37,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:37" (1/1) ... [2021-11-19 05:34:37,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:37" (1/1) ... [2021-11-19 05:34:37,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:34:37,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:34:37,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:34:37,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:34:37,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:37" (1/1) ... [2021-11-19 05:34:37,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:34:37,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:34:37,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:34:37,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:34:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:34:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:34:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:34:37,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:34:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 05:34:37,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 05:34:37,451 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:34:37,452 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:34:37,595 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:34:37,601 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:34:37,601 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 05:34:37,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:34:37 BoogieIcfgContainer [2021-11-19 05:34:37,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:34:37,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:34:37,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:34:37,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:34:37,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:34:36" (1/3) ... [2021-11-19 05:34:37,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7017c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:34:37, skipping insertion in model container [2021-11-19 05:34:37,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:37" (2/3) ... [2021-11-19 05:34:37,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7017c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:34:37, skipping insertion in model container [2021-11-19 05:34:37,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:34:37" (3/3) ... [2021-11-19 05:34:37,611 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_8.i [2021-11-19 05:34:37,615 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:34:37,622 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 05:34:37,701 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:34:37,720 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 [2021-11-19 05:34:37,721 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 05:34:37,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:34:37,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 05:34:37,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:37,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:34:37,743 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:34:37,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:37,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2021-11-19 05:34:37,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:34:37,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861346299] [2021-11-19 05:34:37,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:37,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:34:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:37,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:37,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:34:37,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861346299] [2021-11-19 05:34:37,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861346299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:34:37,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:34:37,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 05:34:37,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720011567] [2021-11-19 05:34:37,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:34:37,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 05:34:37,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:34:37,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 05:34:37,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:34:37,927 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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) [2021-11-19 05:34:37,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:37,961 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2021-11-19 05:34:37,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:34:37,964 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 [2021-11-19 05:34:37,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:37,973 INFO L225 Difference]: With dead ends: 57 [2021-11-19 05:34:37,974 INFO L226 Difference]: Without dead ends: 26 [2021-11-19 05:34:37,977 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 [2021-11-19 05:34:37,985 INFO L933 BasicCegarLoop]: 40 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, 40 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 [2021-11-19 05:34:37,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:34:38,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-19 05:34:38,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-19 05:34:38,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:34:38,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-11-19 05:34:38,057 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2021-11-19 05:34:38,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:38,057 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-11-19 05:34:38,059 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) [2021-11-19 05:34:38,059 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-11-19 05:34:38,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 05:34:38,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:38,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:34:38,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:34:38,062 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:34:38,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:38,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2021-11-19 05:34:38,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:34:38,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346758952] [2021-11-19 05:34:38,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:38,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:34:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:34:38,107 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:34:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:34:38,171 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:34:38,172 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 05:34:38,174 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-19 05:34:38,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-19 05:34:38,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:34:38,185 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-19 05:34:38,188 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:34:38,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:34:38 BoogieIcfgContainer [2021-11-19 05:34:38,210 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:34:38,211 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:34:38,211 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:34:38,211 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:34:38,212 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:34:37" (3/4) ... [2021-11-19 05:34:38,215 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 05:34:38,215 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:34:38,217 INFO L158 Benchmark]: Toolchain (without parser) took 1339.71ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 61.7MB in the beginning and 96.3MB in the end (delta: -34.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:34:38,218 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 94.4MB. Free memory was 47.8MB in the beginning and 47.7MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:34:38,223 INFO L158 Benchmark]: CACSL2BoogieTranslator took 312.97ms. Allocated memory is still 94.4MB. Free memory was 61.5MB in the beginning and 69.2MB in the end (delta: -7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:34:38,224 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.42ms. Allocated memory is still 94.4MB. Free memory was 69.2MB in the beginning and 67.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:34:38,224 INFO L158 Benchmark]: Boogie Preprocessor took 44.65ms. Allocated memory is still 94.4MB. Free memory was 67.5MB in the beginning and 66.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:34:38,225 INFO L158 Benchmark]: RCFGBuilder took 305.39ms. Allocated memory is still 94.4MB. Free memory was 66.3MB in the beginning and 55.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:34:38,226 INFO L158 Benchmark]: TraceAbstraction took 605.78ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 55.5MB in the beginning and 97.0MB in the end (delta: -41.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:34:38,226 INFO L158 Benchmark]: Witness Printer took 4.49ms. Allocated memory is still 125.8MB. Free memory was 97.0MB in the beginning and 96.3MB in the end (delta: 630.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:34:38,229 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 94.4MB. Free memory was 47.8MB in the beginning and 47.7MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 312.97ms. Allocated memory is still 94.4MB. Free memory was 61.5MB in the beginning and 69.2MB in the end (delta: -7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.42ms. Allocated memory is still 94.4MB. Free memory was 69.2MB in the beginning and 67.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.65ms. Allocated memory is still 94.4MB. Free memory was 67.5MB in the beginning and 66.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 305.39ms. Allocated memory is still 94.4MB. Free memory was 66.3MB in the beginning and 55.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 605.78ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 55.5MB in the beginning and 97.0MB in the end (delta: -41.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.49ms. Allocated memory is still 125.8MB. Free memory was 97.0MB in the beginning and 96.3MB in the end (delta: 630.5kB). 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: 109]: 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 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 100. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L100] CALL, EXPR f(IN) [L87] 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] [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] 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] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=49] [L109] 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 2 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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, 40 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, 40 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=33occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s 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 [2021-11-19 05:34:38,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL --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 30996e3a95d093576f36103779b690855817d5b6444d2c5828f5d0db503b2e4f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:34:40,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:34:40,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:34:40,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:34:40,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:34:40,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:34:40,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:34:40,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:34:40,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:34:40,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:34:40,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:34:40,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:34:40,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:34:40,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:34:40,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:34:40,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:34:40,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:34:40,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:34:40,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:34:40,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:34:40,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:34:40,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:34:40,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:34:40,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:34:40,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:34:40,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:34:40,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:34:40,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:34:40,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:34:40,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:34:40,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:34:40,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:34:40,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:34:40,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:34:40,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:34:40,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:34:40,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:34:40,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:34:40,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:34:40,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:34:40,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:34:40,825 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-19 05:34:40,869 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:34:40,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:34:40,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:34:40,870 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:34:40,872 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:34:40,872 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:34:40,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:34:40,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:34:40,874 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:34:40,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:34:40,875 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:34:40,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:34:40,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:34:40,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:34:40,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:34:40,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:34:40,876 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 05:34:40,876 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 05:34:40,877 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:34:40,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:34:40,877 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:34:40,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:34:40,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:34:40,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:34:40,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:34:40,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:34:40,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:34:40,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:34:40,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:34:40,879 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 05:34:40,879 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 05:34:40,879 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:34:40,879 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:34:40,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:34:40,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:34:40,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 05:34:40,880 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_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30996e3a95d093576f36103779b690855817d5b6444d2c5828f5d0db503b2e4f [2021-11-19 05:34:41,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:34:41,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:34:41,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:34:41,329 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:34:41,329 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:34:41,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/combinations/gcd_4+newton_1_8.i [2021-11-19 05:34:41,400 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/data/27d20dd7b/2d674030874343c7aa2a3a72765123a4/FLAGcf8881292 [2021-11-19 05:34:41,860 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:34:41,861 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i [2021-11-19 05:34:41,880 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/data/27d20dd7b/2d674030874343c7aa2a3a72765123a4/FLAGcf8881292 [2021-11-19 05:34:42,235 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/data/27d20dd7b/2d674030874343c7aa2a3a72765123a4 [2021-11-19 05:34:42,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:34:42,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:34:42,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:34:42,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:34:42,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:34:42,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:34:42" (1/1) ... [2021-11-19 05:34:42,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a630fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:42, skipping insertion in model container [2021-11-19 05:34:42,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:34:42" (1/1) ... [2021-11-19 05:34:42,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:34:42,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:34:42,488 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_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[1224,1237] [2021-11-19 05:34:42,522 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_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[2806,2819] [2021-11-19 05:34:42,524 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:34:42,567 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:34:42,580 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_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[1224,1237] [2021-11-19 05:34:42,604 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_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[2806,2819] [2021-11-19 05:34:42,605 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:34:42,625 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:34:42,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:42 WrapperNode [2021-11-19 05:34:42,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:34:42,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:34:42,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:34:42,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:34:42,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:42" (1/1) ... [2021-11-19 05:34:42,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:42" (1/1) ... [2021-11-19 05:34:42,696 INFO L137 Inliner]: procedures = 28, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 70 [2021-11-19 05:34:42,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:34:42,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:34:42,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:34:42,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:34:42,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:42" (1/1) ... [2021-11-19 05:34:42,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:42" (1/1) ... [2021-11-19 05:34:42,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:42" (1/1) ... [2021-11-19 05:34:42,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:42" (1/1) ... [2021-11-19 05:34:42,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:42" (1/1) ... [2021-11-19 05:34:42,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:42" (1/1) ... [2021-11-19 05:34:42,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:42" (1/1) ... [2021-11-19 05:34:42,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:34:42,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:34:42,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:34:42,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:34:42,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:42" (1/1) ... [2021-11-19 05:34:42,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:34:42,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:34:42,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:34:42,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:34:42,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:34:42,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 05:34:42,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:34:42,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:34:42,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 05:34:42,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 05:34:42,934 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:34:42,935 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:34:49,720 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:34:49,726 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:34:49,726 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 05:34:49,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:34:49 BoogieIcfgContainer [2021-11-19 05:34:49,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:34:49,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:34:49,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:34:49,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:34:49,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:34:42" (1/3) ... [2021-11-19 05:34:49,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c72dff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:34:49, skipping insertion in model container [2021-11-19 05:34:49,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:42" (2/3) ... [2021-11-19 05:34:49,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c72dff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:34:49, skipping insertion in model container [2021-11-19 05:34:49,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:34:49" (3/3) ... [2021-11-19 05:34:49,736 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_8.i [2021-11-19 05:34:49,741 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:34:49,742 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 05:34:49,790 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:34:49,797 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 [2021-11-19 05:34:49,815 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 05:34:49,842 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:34:49,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 05:34:49,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:49,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:34:49,847 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:34:49,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:49,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2021-11-19 05:34:49,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:34:49,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076519812] [2021-11-19 05:34:49,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:49,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:34:49,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:34:49,872 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:34:49,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 05:34:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:51,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 05:34:51,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:34:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:51,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:34:51,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:51,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:34:51,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076519812] [2021-11-19 05:34:51,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076519812] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:34:51,161 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:34:51,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 05:34:51,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721766644] [2021-11-19 05:34:51,163 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:34:51,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 05:34:51,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:34:51,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 05:34:51,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:34:51,196 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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) [2021-11-19 05:34:51,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:51,217 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2021-11-19 05:34:51,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:34:51,219 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 [2021-11-19 05:34:51,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:51,225 INFO L225 Difference]: With dead ends: 57 [2021-11-19 05:34:51,225 INFO L226 Difference]: Without dead ends: 26 [2021-11-19 05:34:51,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:34:51,232 INFO L933 BasicCegarLoop]: 40 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, 40 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 [2021-11-19 05:34:51,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:34:51,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-19 05:34:51,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-19 05:34:51,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:34:51,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-11-19 05:34:51,267 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2021-11-19 05:34:51,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:51,268 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-11-19 05:34:51,268 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) [2021-11-19 05:34:51,268 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-11-19 05:34:51,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 05:34:51,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:51,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:34:51,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 05:34:51,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:34:51,483 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:34:51,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:51,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2021-11-19 05:34:51,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:34:51,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019009104] [2021-11-19 05:34:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:51,485 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:34:51,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:34:51,491 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:34:51,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 05:34:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:34:54,783 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:35:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:35:13,441 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-19 05:35:13,441 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 05:35:13,443 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-19 05:35:13,445 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-19 05:35:13,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 05:35:13,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:35:13,650 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-19 05:35:13,654 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:35:13,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:35:13 BoogieIcfgContainer [2021-11-19 05:35:13,685 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:35:13,685 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:35:13,686 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:35:13,686 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:35:13,686 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:34:49" (3/4) ... [2021-11-19 05:35:13,688 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 05:35:13,735 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 05:35:13,735 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:35:13,736 INFO L158 Benchmark]: Toolchain (without parser) took 31495.22ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 32.4MB in the beginning and 50.7MB in the end (delta: -18.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:35:13,737 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 54.5MB. Free memory was 35.7MB in the beginning and 35.6MB in the end (delta: 42.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:35:13,737 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.76ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 32.2MB in the beginning and 52.9MB in the end (delta: -20.6MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2021-11-19 05:35:13,738 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.59ms. Allocated memory is still 71.3MB. Free memory was 52.7MB in the beginning and 51.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:35:13,738 INFO L158 Benchmark]: Boogie Preprocessor took 62.49ms. Allocated memory is still 71.3MB. Free memory was 51.1MB in the beginning and 49.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:35:13,739 INFO L158 Benchmark]: RCFGBuilder took 6968.42ms. Allocated memory is still 71.3MB. Free memory was 49.6MB in the beginning and 38.9MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:35:13,739 INFO L158 Benchmark]: TraceAbstraction took 23954.74ms. Allocated memory is still 71.3MB. Free memory was 38.5MB in the beginning and 52.7MB in the end (delta: -14.3MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2021-11-19 05:35:13,740 INFO L158 Benchmark]: Witness Printer took 50.14ms. Allocated memory is still 71.3MB. Free memory was 52.7MB in the beginning and 50.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:35:13,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 54.5MB. Free memory was 35.7MB in the beginning and 35.6MB in the end (delta: 42.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.76ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 32.2MB in the beginning and 52.9MB in the end (delta: -20.6MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.59ms. Allocated memory is still 71.3MB. Free memory was 52.7MB in the beginning and 51.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.49ms. Allocated memory is still 71.3MB. Free memory was 51.1MB in the beginning and 49.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 6968.42ms. Allocated memory is still 71.3MB. Free memory was 49.6MB in the beginning and 38.9MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 23954.74ms. Allocated memory is still 71.3MB. Free memory was 38.5MB in the beginning and 52.7MB in the end (delta: -14.3MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Witness Printer took 50.14ms. Allocated memory is still 71.3MB. Free memory was 52.7MB in the beginning and 50.7MB in the end (delta: 2.0MB). 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: 109]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L100] CALL, EXPR f(IN) [L87] 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)=-1.6128488779067993, \result=-1.0101827383041382, x=-1.6128488779067993] [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-1.6128488779067993, \result=0.005750883370637894, x=-1.6128488779067993] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=-1.6128488779067993, x=174.0441131591797] [L109] reach_error() VAL [IN=-1.6128488779067993, x=174.0441131591797] - 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 2 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 23.9s, 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, 40 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, 40 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 4.3s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-19 05:35:13,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7f1a65-c00c-41f3-a9a6-0ce86aeb59c7/bin/uautomizer-ZXIjhQolGL/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