./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_4+newton_1_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF --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 5bba7076723828a76d549dab99f9f19216b374670dd0bb1f48d42a5f4a5ac3a7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:20:04,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:20:04,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:20:04,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:20:04,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:20:04,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:20:04,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:20:04,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:20:04,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:20:04,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:20:04,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:20:04,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:20:04,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:20:04,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:20:04,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:20:04,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:20:04,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:20:04,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:20:04,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:20:04,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:20:04,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:20:04,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:20:04,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:20:04,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:20:04,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:20:04,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:20:04,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:20:04,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:20:04,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:20:04,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:20:04,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:20:04,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:20:04,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:20:04,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:20:04,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:20:04,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:20:04,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:20:04,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:20:04,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:20:04,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:20:04,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:20:04,691 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:20:04,728 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:20:04,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:20:04,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:20:04,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:20:04,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:20:04,729 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:20:04,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:20:04,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:20:04,730 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:20:04,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:20:04,731 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:20:04,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:20:04,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:20:04,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:20:04,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:20:04,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:20:04,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:20:04,732 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:20:04,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:20:04,733 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:20:04,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:20:04,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:20:04,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:20:04,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:20:04,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:20:04,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:20:04,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:20:04,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:20:04,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:20:04,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:20:04,735 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:20:04,735 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:20:04,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:20:04,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:20:04,736 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_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bba7076723828a76d549dab99f9f19216b374670dd0bb1f48d42a5f4a5ac3a7 [2021-11-20 06:20:05,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:20:05,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:20:05,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:20:05,118 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:20:05,119 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:20:05,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/combinations/gcd_4+newton_1_7.i [2021-11-20 06:20:05,210 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/data/28fbe7a43/9739ca15f50d476595a011e7ae898ccd/FLAG9a888478c [2021-11-20 06:20:05,747 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:20:05,748 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i [2021-11-20 06:20:05,760 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/data/28fbe7a43/9739ca15f50d476595a011e7ae898ccd/FLAG9a888478c [2021-11-20 06:20:06,089 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/data/28fbe7a43/9739ca15f50d476595a011e7ae898ccd [2021-11-20 06:20:06,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:20:06,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:20:06,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:20:06,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:20:06,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:20:06,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:20:06" (1/1) ... [2021-11-20 06:20:06,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e70e0e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:06, skipping insertion in model container [2021-11-20 06:20:06,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:20:06" (1/1) ... [2021-11-20 06:20:06,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:20:06,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:20:06,370 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_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i[1224,1237] [2021-11-20 06:20:06,399 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_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i[2806,2819] [2021-11-20 06:20:06,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:20:06,410 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:20:06,424 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_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i[1224,1237] [2021-11-20 06:20:06,436 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_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i[2806,2819] [2021-11-20 06:20:06,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:20:06,453 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:20:06,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:06 WrapperNode [2021-11-20 06:20:06,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:20:06,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:20:06,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:20:06,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:20:06,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:06" (1/1) ... [2021-11-20 06:20:06,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:06" (1/1) ... [2021-11-20 06:20:06,499 INFO L137 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 73 [2021-11-20 06:20:06,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:20:06,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:20:06,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:20:06,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:20:06,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:06" (1/1) ... [2021-11-20 06:20:06,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:06" (1/1) ... [2021-11-20 06:20:06,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:06" (1/1) ... [2021-11-20 06:20:06,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:06" (1/1) ... [2021-11-20 06:20:06,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:06" (1/1) ... [2021-11-20 06:20:06,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:06" (1/1) ... [2021-11-20 06:20:06,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:06" (1/1) ... [2021-11-20 06:20:06,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:20:06,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:20:06,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:20:06,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:20:06,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:06" (1/1) ... [2021-11-20 06:20:06,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:20:06,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:20:06,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:20:06,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:20:06,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:20:06,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:20:06,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:20:06,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:20:06,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 06:20:06,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 06:20:06,710 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:20:06,712 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:20:06,893 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:20:06,900 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:20:06,900 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 06:20:06,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:20:06 BoogieIcfgContainer [2021-11-20 06:20:06,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:20:06,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:20:06,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:20:06,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:20:06,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:20:06" (1/3) ... [2021-11-20 06:20:06,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee1710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:20:06, skipping insertion in model container [2021-11-20 06:20:06,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:06" (2/3) ... [2021-11-20 06:20:06,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee1710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:20:06, skipping insertion in model container [2021-11-20 06:20:06,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:20:06" (3/3) ... [2021-11-20 06:20:06,911 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_7.i [2021-11-20 06:20:06,916 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:20:06,916 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 06:20:06,980 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:20:07,003 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:20:07,003 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 06:20:07,036 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 06:20:07,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 06:20:07,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:20:07,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:20:07,042 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:20:07,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:20:07,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2021-11-20 06:20:07,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:20:07,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25130872] [2021-11-20 06:20:07,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:20:07,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:20:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:20:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:20:07,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:20:07,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25130872] [2021-11-20 06:20:07,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25130872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:20:07,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:20:07,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:20:07,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137056024] [2021-11-20 06:20:07,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:20:07,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:20:07,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:20:07,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:20:07,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:20:07,287 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:20:07,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:20:07,326 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2021-11-20 06:20:07,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:20:07,329 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-20 06:20:07,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:20:07,338 INFO L225 Difference]: With dead ends: 57 [2021-11-20 06:20:07,339 INFO L226 Difference]: Without dead ends: 26 [2021-11-20 06:20:07,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:20:07,353 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:20:07,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:20:07,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-20 06:20:07,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-20 06:20:07,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:20:07,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-11-20 06:20:07,416 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2021-11-20 06:20:07,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:20:07,417 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-11-20 06:20:07,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:20:07,418 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-11-20 06:20:07,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 06:20:07,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:20:07,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:20:07,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:20:07,423 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:20:07,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:20:07,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2021-11-20 06:20:07,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:20:07,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225767794] [2021-11-20 06:20:07,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:20:07,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:20:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:20:07,445 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:20:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:20:07,491 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:20:07,492 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 06:20:07,494 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-20 06:20:07,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-20 06:20:07,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:20:07,501 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-20 06:20:07,504 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:20:07,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:20:07 BoogieIcfgContainer [2021-11-20 06:20:07,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:20:07,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:20:07,540 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:20:07,540 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:20:07,540 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:20:06" (3/4) ... [2021-11-20 06:20:07,544 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:20:07,544 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:20:07,545 INFO L158 Benchmark]: Toolchain (without parser) took 1450.96ms. Allocated memory is still 107.0MB. Free memory was 69.7MB in the beginning and 43.4MB in the end (delta: 26.3MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2021-11-20 06:20:07,545 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 107.0MB. Free memory was 86.0MB in the beginning and 85.9MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:20:07,546 INFO L158 Benchmark]: CACSL2BoogieTranslator took 351.29ms. Allocated memory is still 107.0MB. Free memory was 69.5MB in the beginning and 81.1MB in the end (delta: -11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:20:07,547 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.31ms. Allocated memory is still 107.0MB. Free memory was 81.1MB in the beginning and 79.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:20:07,547 INFO L158 Benchmark]: Boogie Preprocessor took 29.09ms. Allocated memory is still 107.0MB. Free memory was 79.4MB in the beginning and 77.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:20:07,548 INFO L158 Benchmark]: RCFGBuilder took 371.80ms. Allocated memory is still 107.0MB. Free memory was 77.9MB in the beginning and 67.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 06:20:07,549 INFO L158 Benchmark]: TraceAbstraction took 634.92ms. Allocated memory is still 107.0MB. Free memory was 67.1MB in the beginning and 43.7MB in the end (delta: 23.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-20 06:20:07,549 INFO L158 Benchmark]: Witness Printer took 4.49ms. Allocated memory is still 107.0MB. Free memory was 43.7MB in the beginning and 43.4MB in the end (delta: 336.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:20:07,553 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 107.0MB. Free memory was 86.0MB in the beginning and 85.9MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 351.29ms. Allocated memory is still 107.0MB. Free memory was 69.5MB in the beginning and 81.1MB in the end (delta: -11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.31ms. Allocated memory is still 107.0MB. Free memory was 81.1MB in the beginning and 79.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.09ms. Allocated memory is still 107.0MB. Free memory was 79.4MB in the beginning and 77.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 371.80ms. Allocated memory is still 107.0MB. Free memory was 77.9MB in the beginning and 67.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 634.92ms. Allocated memory is still 107.0MB. Free memory was 67.1MB in the beginning and 43.7MB in the end (delta: 23.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.49ms. Allocated memory is still 107.0MB. Free memory was 43.7MB in the beginning and 43.4MB in the end (delta: 336.2kB). 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: 109]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 100. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L100] CALL, EXPR f(IN) [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=49] [L109] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 40 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 06:20:07,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/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_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF --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 5bba7076723828a76d549dab99f9f19216b374670dd0bb1f48d42a5f4a5ac3a7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:20:10,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:20:10,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:20:10,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:20:10,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:20:10,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:20:10,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:20:10,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:20:10,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:20:10,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:20:10,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:20:10,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:20:10,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:20:10,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:20:10,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:20:10,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:20:10,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:20:10,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:20:10,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:20:10,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:20:10,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:20:10,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:20:10,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:20:10,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:20:10,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:20:10,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:20:10,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:20:10,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:20:10,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:20:10,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:20:10,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:20:10,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:20:10,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:20:10,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:20:10,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:20:10,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:20:10,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:20:10,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:20:10,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:20:10,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:20:10,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:20:10,403 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-20 06:20:10,455 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:20:10,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:20:10,455 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:20:10,456 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:20:10,456 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:20:10,456 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:20:10,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:20:10,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:20:10,458 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:20:10,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:20:10,458 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:20:10,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:20:10,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:20:10,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:20:10,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:20:10,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:20:10,461 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:20:10,461 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 06:20:10,462 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 06:20:10,462 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:20:10,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:20:10,462 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:20:10,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:20:10,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:20:10,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:20:10,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:20:10,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:20:10,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:20:10,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:20:10,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:20:10,465 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 06:20:10,465 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 06:20:10,466 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:20:10,466 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:20:10,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:20:10,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:20:10,468 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 06:20:10,468 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_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bba7076723828a76d549dab99f9f19216b374670dd0bb1f48d42a5f4a5ac3a7 [2021-11-20 06:20:10,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:20:10,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:20:10,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:20:11,000 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:20:11,001 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:20:11,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/combinations/gcd_4+newton_1_7.i [2021-11-20 06:20:11,084 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/data/f9e6c8fd2/f305a5f914864ca8b2e6b60739d1b823/FLAG68a02fbcf [2021-11-20 06:20:11,755 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:20:11,756 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i [2021-11-20 06:20:11,766 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/data/f9e6c8fd2/f305a5f914864ca8b2e6b60739d1b823/FLAG68a02fbcf [2021-11-20 06:20:12,079 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/data/f9e6c8fd2/f305a5f914864ca8b2e6b60739d1b823 [2021-11-20 06:20:12,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:20:12,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:20:12,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:20:12,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:20:12,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:20:12,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:20:12" (1/1) ... [2021-11-20 06:20:12,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6563998c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:12, skipping insertion in model container [2021-11-20 06:20:12,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:20:12" (1/1) ... [2021-11-20 06:20:12,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:20:12,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:20:12,377 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_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i[1224,1237] [2021-11-20 06:20:12,425 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_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i[2806,2819] [2021-11-20 06:20:12,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:20:12,461 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:20:12,488 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i[1224,1237] [2021-11-20 06:20:12,513 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_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i[2806,2819] [2021-11-20 06:20:12,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:20:12,542 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:20:12,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:12 WrapperNode [2021-11-20 06:20:12,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:20:12,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:20:12,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:20:12,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:20:12,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:12" (1/1) ... [2021-11-20 06:20:12,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:12" (1/1) ... [2021-11-20 06:20:12,607 INFO L137 Inliner]: procedures = 28, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 70 [2021-11-20 06:20:12,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:20:12,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:20:12,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:20:12,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:20:12,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:12" (1/1) ... [2021-11-20 06:20:12,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:12" (1/1) ... [2021-11-20 06:20:12,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:12" (1/1) ... [2021-11-20 06:20:12,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:12" (1/1) ... [2021-11-20 06:20:12,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:12" (1/1) ... [2021-11-20 06:20:12,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:12" (1/1) ... [2021-11-20 06:20:12,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:12" (1/1) ... [2021-11-20 06:20:12,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:20:12,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:20:12,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:20:12,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:20:12,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:12" (1/1) ... [2021-11-20 06:20:12,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:20:12,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:20:12,708 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:20:12,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:20:12,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:20:12,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 06:20:12,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:20:12,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:20:12,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 06:20:12,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 06:20:12,903 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:20:12,905 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:20:18,692 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:20:18,699 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:20:18,699 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 06:20:18,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:20:18 BoogieIcfgContainer [2021-11-20 06:20:18,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:20:18,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:20:18,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:20:18,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:20:18,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:20:12" (1/3) ... [2021-11-20 06:20:18,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fdfae00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:20:18, skipping insertion in model container [2021-11-20 06:20:18,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:20:12" (2/3) ... [2021-11-20 06:20:18,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fdfae00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:20:18, skipping insertion in model container [2021-11-20 06:20:18,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:20:18" (3/3) ... [2021-11-20 06:20:18,708 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_7.i [2021-11-20 06:20:18,735 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:20:18,735 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 06:20:18,800 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:20:18,806 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:20:18,807 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 06:20:18,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 06:20:18,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 06:20:18,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:20:18,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:20:18,828 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:20:18,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:20:18,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2021-11-20 06:20:18,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:20:18,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651361845] [2021-11-20 06:20:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:20:18,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:20:18,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:20:18,854 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:20:18,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 06:20:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:20:20,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 06:20:20,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:20:20,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:20:20,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:20:20,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:20:20,293 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:20:20,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651361845] [2021-11-20 06:20:20,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651361845] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:20:20,296 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:20:20,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 06:20:20,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455307144] [2021-11-20 06:20:20,299 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:20:20,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:20:20,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:20:20,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:20:20,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:20:20,343 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:20:20,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:20:20,364 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2021-11-20 06:20:20,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:20:20,366 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-20 06:20:20,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:20:20,373 INFO L225 Difference]: With dead ends: 57 [2021-11-20 06:20:20,373 INFO L226 Difference]: Without dead ends: 26 [2021-11-20 06:20:20,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:20:20,380 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:20:20,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:20:20,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-20 06:20:20,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-20 06:20:20,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:20:20,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-11-20 06:20:20,417 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2021-11-20 06:20:20,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:20:20,418 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-11-20 06:20:20,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:20:20,419 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-11-20 06:20:20,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 06:20:20,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:20:20,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:20:20,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:20:20,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:20:20,640 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:20:20,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:20:20,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2021-11-20 06:20:20,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:20:20,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740530563] [2021-11-20 06:20:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:20:20,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:20:20,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:20:20,644 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:20:20,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 06:20:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:20:45,990 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:20:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:20:53,761 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-20 06:20:53,761 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 06:20:53,763 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-20 06:20:53,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-20 06:20:53,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-20 06:20:53,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:20:53,969 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-20 06:20:53,972 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:20:53,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:20:53 BoogieIcfgContainer [2021-11-20 06:20:53,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:20:53,999 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:20:53,999 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:20:54,000 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:20:54,000 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:20:18" (3/4) ... [2021-11-20 06:20:54,002 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-20 06:20:54,074 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 06:20:54,075 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:20:54,076 INFO L158 Benchmark]: Toolchain (without parser) took 41983.49ms. Allocated memory is still 62.9MB. Free memory was 45.0MB in the beginning and 32.2MB in the end (delta: 12.8MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2021-11-20 06:20:54,077 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 62.9MB. Free memory was 43.1MB in the beginning and 43.0MB in the end (delta: 95.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:20:54,078 INFO L158 Benchmark]: CACSL2BoogieTranslator took 449.22ms. Allocated memory is still 62.9MB. Free memory was 44.8MB in the beginning and 33.1MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 06:20:54,080 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.69ms. Allocated memory is still 62.9MB. Free memory was 33.1MB in the beginning and 31.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:20:54,080 INFO L158 Benchmark]: Boogie Preprocessor took 61.63ms. Allocated memory is still 62.9MB. Free memory was 31.2MB in the beginning and 29.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:20:54,081 INFO L158 Benchmark]: RCFGBuilder took 6030.05ms. Allocated memory is still 62.9MB. Free memory was 29.8MB in the beginning and 38.0MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:20:54,081 INFO L158 Benchmark]: TraceAbstraction took 35296.03ms. Allocated memory is still 62.9MB. Free memory was 37.6MB in the beginning and 34.3MB in the end (delta: 3.3MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2021-11-20 06:20:54,089 INFO L158 Benchmark]: Witness Printer took 76.01ms. Allocated memory is still 62.9MB. Free memory was 34.3MB in the beginning and 32.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:20:54,092 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 62.9MB. Free memory was 43.1MB in the beginning and 43.0MB in the end (delta: 95.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 449.22ms. Allocated memory is still 62.9MB. Free memory was 44.8MB in the beginning and 33.1MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.69ms. Allocated memory is still 62.9MB. Free memory was 33.1MB in the beginning and 31.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.63ms. Allocated memory is still 62.9MB. Free memory was 31.2MB in the beginning and 29.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 6030.05ms. Allocated memory is still 62.9MB. Free memory was 29.8MB in the beginning and 38.0MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 35296.03ms. Allocated memory is still 62.9MB. Free memory was 37.6MB in the beginning and 34.3MB in the end (delta: 3.3MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. * Witness Printer took 76.01ms. Allocated memory is still 62.9MB. Free memory was 34.3MB in the beginning and 32.2MB 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: 109]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L100] CALL, EXPR f(IN) [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=-0.9931156039237976, \result=-0.8381069302558899, x=-0.9931156039237976] [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-0.9931156039237976, \result=0.5487242937088013, x=-0.9931156039237976] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=-0.9931156039237976, x=0.5342578291893005] [L109] reach_error() VAL [IN=-0.9931156039237976, x=0.5342578291893005] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 35.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 40 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 26.5s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-20 06:20:54,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12a05be-43b6-4f4f-8c40-82d5ef1cb757/bin/uautomizer-DQz5hQGWxF/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