./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_2+newton_1_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_1_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f15ee43151b815daf0172d1dd7cbf85838195f09623b71f36e6eaf1920c66307 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:02:15,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:02:15,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:02:15,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:02:15,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:02:15,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:02:15,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:02:15,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:02:15,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:02:15,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:02:15,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:02:15,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:02:15,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:02:15,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:02:15,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:02:15,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:02:15,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:02:15,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:02:15,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:02:15,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:02:15,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:02:15,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:02:15,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:02:15,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:02:15,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:02:15,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:02:15,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:02:15,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:02:15,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:02:15,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:02:15,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:02:15,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:02:15,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:02:15,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:02:15,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:02:15,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:02:15,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:02:15,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:02:15,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:02:15,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:02:15,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:02:15,581 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:02:15,598 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:02:15,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:02:15,598 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:02:15,598 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:02:15,599 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:02:15,599 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:02:15,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:02:15,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:02:15,600 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:02:15,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:02:15,600 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:02:15,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:02:15,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:02:15,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:02:15,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:02:15,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:02:15,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:02:15,601 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:02:15,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:02:15,601 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:02:15,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:02:15,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:02:15,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:02:15,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:02:15,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:02:15,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:02:15,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:02:15,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:02:15,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:02:15,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:02:15,602 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:02:15,602 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:02:15,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:02:15,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:02:15,603 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_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f15ee43151b815daf0172d1dd7cbf85838195f09623b71f36e6eaf1920c66307 [2021-12-06 17:02:15,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:02:15,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:02:15,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:02:15,801 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:02:15,802 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:02:15,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/gcd_2+newton_1_8.i [2021-12-06 17:02:15,860 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/data/e89c916d9/051849294694453f871bd283f552b82f/FLAG66929a412 [2021-12-06 17:02:16,223 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:02:16,224 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i [2021-12-06 17:02:16,229 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/data/e89c916d9/051849294694453f871bd283f552b82f/FLAG66929a412 [2021-12-06 17:02:16,242 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/data/e89c916d9/051849294694453f871bd283f552b82f [2021-12-06 17:02:16,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:02:16,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:02:16,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:02:16,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:02:16,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:02:16,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:02:16" (1/1) ... [2021-12-06 17:02:16,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3915d361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:16, skipping insertion in model container [2021-12-06 17:02:16,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:02:16" (1/1) ... [2021-12-06 17:02:16,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:02:16,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:02:16,385 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_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[1226,1239] [2021-12-06 17:02:16,411 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_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[2820,2833] [2021-12-06 17:02:16,412 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:02:16,418 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:02:16,426 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_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[1226,1239] [2021-12-06 17:02:16,434 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_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[2820,2833] [2021-12-06 17:02:16,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:02:16,445 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:02:16,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:16 WrapperNode [2021-12-06 17:02:16,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:02:16,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:02:16,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:02:16,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:02:16,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:16" (1/1) ... [2021-12-06 17:02:16,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:16" (1/1) ... [2021-12-06 17:02:16,474 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-12-06 17:02:16,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:02:16,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:02:16,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:02:16,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:02:16,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:16" (1/1) ... [2021-12-06 17:02:16,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:16" (1/1) ... [2021-12-06 17:02:16,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:16" (1/1) ... [2021-12-06 17:02:16,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:16" (1/1) ... [2021-12-06 17:02:16,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:16" (1/1) ... [2021-12-06 17:02:16,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:16" (1/1) ... [2021-12-06 17:02:16,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:16" (1/1) ... [2021-12-06 17:02:16,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:02:16,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:02:16,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:02:16,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:02:16,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:16" (1/1) ... [2021-12-06 17:02:16,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:02:16,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:02:16,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:02:16,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:02:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:02:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:02:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:02:16,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:02:16,601 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:02:16,603 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:02:16,697 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:02:16,702 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:02:16,702 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 17:02:16,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:02:16 BoogieIcfgContainer [2021-12-06 17:02:16,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:02:16,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:02:16,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:02:16,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:02:16,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:02:16" (1/3) ... [2021-12-06 17:02:16,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711aeace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:02:16, skipping insertion in model container [2021-12-06 17:02:16,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:16" (2/3) ... [2021-12-06 17:02:16,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711aeace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:02:16, skipping insertion in model container [2021-12-06 17:02:16,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:02:16" (3/3) ... [2021-12-06 17:02:16,709 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_8.i [2021-12-06 17:02:16,713 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:02:16,713 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 17:02:16,749 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:02:16,755 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:02:16,755 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 17:02:16,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:02:16,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 17:02:16,771 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:02:16,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:02:16,771 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:02:16,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:02:16,776 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-06 17:02:16,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:02:16,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545301683] [2021-12-06 17:02:16,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:02:16,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:02:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:02:16,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:02:16,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:02:16,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545301683] [2021-12-06 17:02:16,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545301683] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:02:16,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:02:16,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:02:16,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311085153] [2021-12-06 17:02:16,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:02:16,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 17:02:16,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:02:16,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 17:02:16,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:02:16,948 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:02:16,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:02:16,958 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-12-06 17:02:16,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 17:02:16,960 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 17:02:16,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:02:16,966 INFO L225 Difference]: With dead ends: 47 [2021-12-06 17:02:16,966 INFO L226 Difference]: Without dead ends: 19 [2021-12-06 17:02:16,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:02:16,971 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:02:16,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:02:16,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-06 17:02:16,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-06 17:02:16,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:02:16,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-06 17:02:16,995 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-06 17:02:16,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:02:16,995 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-06 17:02:16,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:02:16,996 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-06 17:02:16,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 17:02:16,996 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:02:16,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:02:16,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:02:16,997 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:02:16,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:02:16,997 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-06 17:02:16,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:02:16,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780834638] [2021-12-06 17:02:16,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:02:16,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:02:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 17:02:17,014 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 17:02:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 17:02:17,036 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 17:02:17,036 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 17:02:17,038 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-06 17:02:17,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-06 17:02:17,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 17:02:17,042 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-06 17:02:17,044 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 17:02:17,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:02:17 BoogieIcfgContainer [2021-12-06 17:02:17,063 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 17:02:17,064 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 17:02:17,064 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 17:02:17,064 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 17:02:17,065 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:02:16" (3/4) ... [2021-12-06 17:02:17,068 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 17:02:17,068 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 17:02:17,069 INFO L158 Benchmark]: Toolchain (without parser) took 822.71ms. Allocated memory is still 107.0MB. Free memory was 72.0MB in the beginning and 44.1MB in the end (delta: 27.9MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. [2021-12-06 17:02:17,069 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 73.4MB. Free memory was 51.1MB in the beginning and 51.1MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:02:17,070 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.49ms. Allocated memory is still 107.0MB. Free memory was 71.8MB in the beginning and 81.8MB in the end (delta: -10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 17:02:17,070 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.46ms. Allocated memory is still 107.0MB. Free memory was 81.8MB in the beginning and 79.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:02:17,071 INFO L158 Benchmark]: Boogie Preprocessor took 22.53ms. Allocated memory is still 107.0MB. Free memory was 79.7MB in the beginning and 78.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:02:17,071 INFO L158 Benchmark]: RCFGBuilder took 204.92ms. Allocated memory is still 107.0MB. Free memory was 78.6MB in the beginning and 68.2MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 17:02:17,072 INFO L158 Benchmark]: TraceAbstraction took 358.72ms. Allocated memory is still 107.0MB. Free memory was 67.7MB in the beginning and 44.6MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-06 17:02:17,072 INFO L158 Benchmark]: Witness Printer took 3.84ms. Allocated memory is still 107.0MB. Free memory is still 44.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:02:17,075 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 73.4MB. Free memory was 51.1MB in the beginning and 51.1MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.49ms. Allocated memory is still 107.0MB. Free memory was 71.8MB in the beginning and 81.8MB in the end (delta: -10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.46ms. Allocated memory is still 107.0MB. Free memory was 81.8MB in the beginning and 79.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.53ms. Allocated memory is still 107.0MB. Free memory was 79.7MB in the beginning and 78.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 204.92ms. Allocated memory is still 107.0MB. Free memory was 78.6MB in the beginning and 68.2MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 358.72ms. Allocated memory is still 107.0MB. Free memory was 67.7MB in the beginning and 44.6MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 3.84ms. Allocated memory is still 107.0MB. Free memory is still 44.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 102]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 93. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=49] [L102] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-06 17:02:17,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_1_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f15ee43151b815daf0172d1dd7cbf85838195f09623b71f36e6eaf1920c66307 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:02:18,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:02:18,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:02:18,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:02:18,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:02:18,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:02:18,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:02:18,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:02:18,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:02:18,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:02:18,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:02:18,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:02:18,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:02:18,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:02:18,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:02:18,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:02:18,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:02:18,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:02:18,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:02:18,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:02:18,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:02:18,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:02:18,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:02:18,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:02:18,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:02:18,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:02:18,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:02:18,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:02:18,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:02:18,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:02:18,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:02:18,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:02:18,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:02:18,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:02:18,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:02:18,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:02:18,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:02:18,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:02:18,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:02:18,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:02:18,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:02:18,739 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-06 17:02:18,758 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:02:18,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:02:18,759 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:02:18,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:02:18,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:02:18,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:02:18,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:02:18,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:02:18,760 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:02:18,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:02:18,761 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:02:18,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:02:18,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:02:18,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:02:18,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:02:18,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:02:18,761 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 17:02:18,761 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 17:02:18,762 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 17:02:18,762 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:02:18,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:02:18,762 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:02:18,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:02:18,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:02:18,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:02:18,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:02:18,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:02:18,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:02:18,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:02:18,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:02:18,763 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 17:02:18,763 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 17:02:18,763 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:02:18,764 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:02:18,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:02:18,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:02:18,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 17:02:18,764 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_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f15ee43151b815daf0172d1dd7cbf85838195f09623b71f36e6eaf1920c66307 [2021-12-06 17:02:19,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:02:19,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:02:19,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:02:19,036 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:02:19,036 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:02:19,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/gcd_2+newton_1_8.i [2021-12-06 17:02:19,080 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/data/841e2547f/690ed12f9b774690b8a37a72b0e48e31/FLAG4cee0b8bd [2021-12-06 17:02:19,455 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:02:19,455 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i [2021-12-06 17:02:19,461 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/data/841e2547f/690ed12f9b774690b8a37a72b0e48e31/FLAG4cee0b8bd [2021-12-06 17:02:19,471 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/data/841e2547f/690ed12f9b774690b8a37a72b0e48e31 [2021-12-06 17:02:19,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:02:19,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:02:19,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:02:19,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:02:19,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:02:19,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:02:19" (1/1) ... [2021-12-06 17:02:19,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a493e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:19, skipping insertion in model container [2021-12-06 17:02:19,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:02:19" (1/1) ... [2021-12-06 17:02:19,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:02:19,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:02:19,607 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_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[1226,1239] [2021-12-06 17:02:19,632 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_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[2820,2833] [2021-12-06 17:02:19,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:02:19,649 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:02:19,666 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_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[1226,1239] [2021-12-06 17:02:19,675 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_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[2820,2833] [2021-12-06 17:02:19,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:02:19,687 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:02:19,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:19 WrapperNode [2021-12-06 17:02:19,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:02:19,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:02:19,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:02:19,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:02:19,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:19" (1/1) ... [2021-12-06 17:02:19,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:19" (1/1) ... [2021-12-06 17:02:19,719 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-12-06 17:02:19,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:02:19,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:02:19,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:02:19,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:02:19,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:19" (1/1) ... [2021-12-06 17:02:19,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:19" (1/1) ... [2021-12-06 17:02:19,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:19" (1/1) ... [2021-12-06 17:02:19,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:19" (1/1) ... [2021-12-06 17:02:19,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:19" (1/1) ... [2021-12-06 17:02:19,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:19" (1/1) ... [2021-12-06 17:02:19,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:19" (1/1) ... [2021-12-06 17:02:19,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:02:19,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:02:19,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:02:19,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:02:19,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:19" (1/1) ... [2021-12-06 17:02:19,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:02:19,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:02:19,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:02:19,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:02:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:02:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 17:02:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:02:19,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:02:19,868 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:02:19,869 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:02:25,742 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:02:25,747 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:02:25,748 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 17:02:25,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:02:25 BoogieIcfgContainer [2021-12-06 17:02:25,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:02:25,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:02:25,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:02:25,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:02:25,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:02:19" (1/3) ... [2021-12-06 17:02:25,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d59a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:02:25, skipping insertion in model container [2021-12-06 17:02:25,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:02:19" (2/3) ... [2021-12-06 17:02:25,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d59a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:02:25, skipping insertion in model container [2021-12-06 17:02:25,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:02:25" (3/3) ... [2021-12-06 17:02:25,756 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_8.i [2021-12-06 17:02:25,760 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:02:25,760 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 17:02:25,794 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:02:25,799 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:02:25,799 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 17:02:25,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:02:25,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 17:02:25,812 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:02:25,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:02:25,813 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:02:25,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:02:25,817 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-06 17:02:25,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:02:25,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394640165] [2021-12-06 17:02:25,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:02:25,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:02:25,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:02:25,827 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:02:25,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 17:02:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:02:26,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 17:02:26,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:02:26,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:02:26,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:02:26,972 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:02:26,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394640165] [2021-12-06 17:02:26,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394640165] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:02:26,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:02:26,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:02:26,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562797112] [2021-12-06 17:02:26,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:02:26,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 17:02:26,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:02:27,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 17:02:27,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:02:27,005 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:02:27,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:02:27,016 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-12-06 17:02:27,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 17:02:27,017 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 17:02:27,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:02:27,022 INFO L225 Difference]: With dead ends: 47 [2021-12-06 17:02:27,022 INFO L226 Difference]: Without dead ends: 19 [2021-12-06 17:02:27,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:02:27,027 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:02:27,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:02:27,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-06 17:02:27,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-06 17:02:27,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:02:27,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-06 17:02:27,048 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-06 17:02:27,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:02:27,048 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-06 17:02:27,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:02:27,049 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-06 17:02:27,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 17:02:27,049 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:02:27,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:02:27,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:02:27,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:02:27,251 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:02:27,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:02:27,254 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-06 17:02:27,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:02:27,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043575624] [2021-12-06 17:02:27,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:02:27,258 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:02:27,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:02:27,259 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:02:27,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 17:02:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 17:02:31,065 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 17:02:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 17:02:36,882 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-06 17:02:36,882 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 17:02:36,883 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-06 17:02:36,885 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-06 17:02:36,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 17:02:37,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:02:37,096 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-06 17:02:37,104 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 17:02:37,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:02:37 BoogieIcfgContainer [2021-12-06 17:02:37,144 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 17:02:37,145 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 17:02:37,145 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 17:02:37,145 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 17:02:37,146 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:02:25" (3/4) ... [2021-12-06 17:02:37,147 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 17:02:37,173 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 17:02:37,173 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 17:02:37,174 INFO L158 Benchmark]: Toolchain (without parser) took 17699.97ms. Allocated memory was 60.8MB in the beginning and 94.4MB in the end (delta: 33.6MB). Free memory was 39.1MB in the beginning and 62.6MB in the end (delta: -23.5MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2021-12-06 17:02:37,174 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 60.8MB. Free memory was 41.6MB in the beginning and 41.5MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:02:37,175 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.76ms. Allocated memory was 60.8MB in the beginning and 94.4MB in the end (delta: 33.6MB). Free memory was 39.0MB in the beginning and 75.6MB in the end (delta: -36.6MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2021-12-06 17:02:37,175 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.05ms. Allocated memory is still 94.4MB. Free memory was 75.6MB in the beginning and 73.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:02:37,175 INFO L158 Benchmark]: Boogie Preprocessor took 22.56ms. Allocated memory is still 94.4MB. Free memory was 73.9MB in the beginning and 72.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:02:37,176 INFO L158 Benchmark]: RCFGBuilder took 6006.10ms. Allocated memory is still 94.4MB. Free memory was 72.4MB in the beginning and 61.8MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 17:02:37,176 INFO L158 Benchmark]: TraceAbstraction took 11393.50ms. Allocated memory is still 94.4MB. Free memory was 61.3MB in the beginning and 64.7MB in the end (delta: -3.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:02:37,176 INFO L158 Benchmark]: Witness Printer took 28.13ms. Allocated memory is still 94.4MB. Free memory was 64.7MB in the beginning and 62.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:02:37,178 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 60.8MB. Free memory was 41.6MB in the beginning and 41.5MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.76ms. Allocated memory was 60.8MB in the beginning and 94.4MB in the end (delta: 33.6MB). Free memory was 39.0MB in the beginning and 75.6MB in the end (delta: -36.6MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.05ms. Allocated memory is still 94.4MB. Free memory was 75.6MB in the beginning and 73.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.56ms. Allocated memory is still 94.4MB. Free memory was 73.9MB in the beginning and 72.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 6006.10ms. Allocated memory is still 94.4MB. Free memory was 72.4MB in the beginning and 61.8MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 11393.50ms. Allocated memory is still 94.4MB. Free memory was 61.3MB in the beginning and 64.7MB in the end (delta: -3.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 28.13ms. Allocated memory is still 94.4MB. Free memory was 64.7MB in the beginning and 62.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 102]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=1.6961736679077148, \result=1.0078669786453247, x=1.6961736679077148] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=1.6961736679077148, \result=-0.06054672226309776, x=1.6961736679077148] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=1.6961736679077148, x=18.34227752685547] [L102] reach_error() VAL [IN=1.6961736679077148, x=18.34227752685547] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 11.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 4.8s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-06 17:02:37,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_738007a3-6a3f-4a84-8a4a-6d02f1c9c2df/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE