./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_2+newton_1_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_1_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b8d2b9f69b0c816e269dea56d57200f8896cad5b0d3fcdf300db44a3be91845d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:51:59,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:51:59,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:51:59,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:51:59,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:51:59,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:51:59,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:51:59,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:51:59,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:51:59,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:51:59,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:51:59,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:51:59,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:51:59,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:51:59,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:51:59,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:51:59,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:51:59,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:51:59,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:51:59,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:51:59,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:51:59,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:51:59,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:51:59,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:51:59,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:51:59,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:51:59,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:51:59,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:51:59,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:51:59,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:51:59,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:51:59,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:51:59,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:51:59,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:51:59,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:51:59,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:51:59,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:51:59,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:51:59,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:51:59,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:51:59,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:51:59,181 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 17:51:59,215 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:51:59,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:51:59,217 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:51:59,218 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:51:59,219 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:51:59,225 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:51:59,225 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:51:59,226 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:51:59,226 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:51:59,226 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:51:59,227 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:51:59,227 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:51:59,228 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:51:59,228 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:51:59,228 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:51:59,228 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:51:59,229 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:51:59,229 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:51:59,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:51:59,230 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 17:51:59,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:51:59,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 17:51:59,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:51:59,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:51:59,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:51:59,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:51:59,233 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 17:51:59,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:51:59,233 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:51:59,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:51:59,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:51:59,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:51:59,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:51:59,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:51:59,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:51:59,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:51:59,235 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:51:59,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:51:59,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:51:59,236 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:51:59,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:51:59,237 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8d2b9f69b0c816e269dea56d57200f8896cad5b0d3fcdf300db44a3be91845d [2021-11-25 17:51:59,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:51:59,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:51:59,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:51:59,575 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:51:59,576 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:51:59,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/gcd_2+newton_1_7.i [2021-11-25 17:51:59,643 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/data/6167972fb/11ce1ba4ae2c4ed087cff691ce8218ee/FLAG661e0d2b8 [2021-11-25 17:52:00,207 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:52:00,211 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/sv-benchmarks/c/combinations/gcd_2+newton_1_7.i [2021-11-25 17:52:00,225 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/data/6167972fb/11ce1ba4ae2c4ed087cff691ce8218ee/FLAG661e0d2b8 [2021-11-25 17:52:00,524 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/data/6167972fb/11ce1ba4ae2c4ed087cff691ce8218ee [2021-11-25 17:52:00,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:52:00,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:52:00,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:52:00,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:52:00,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:52:00,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:52:00" (1/1) ... [2021-11-25 17:52:00,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6657556e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:00, skipping insertion in model container [2021-11-25 17:52:00,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:52:00" (1/1) ... [2021-11-25 17:52:00,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:52:00,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:52:00,822 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_e8e4fb0c-8f34-4833-a17a-983a006d6b98/sv-benchmarks/c/combinations/gcd_2+newton_1_7.i[1226,1239] [2021-11-25 17:52:00,868 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_e8e4fb0c-8f34-4833-a17a-983a006d6b98/sv-benchmarks/c/combinations/gcd_2+newton_1_7.i[2820,2833] [2021-11-25 17:52:00,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:52:00,885 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:52:00,905 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_e8e4fb0c-8f34-4833-a17a-983a006d6b98/sv-benchmarks/c/combinations/gcd_2+newton_1_7.i[1226,1239] [2021-11-25 17:52:00,935 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_e8e4fb0c-8f34-4833-a17a-983a006d6b98/sv-benchmarks/c/combinations/gcd_2+newton_1_7.i[2820,2833] [2021-11-25 17:52:00,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:52:00,955 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:52:00,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:00 WrapperNode [2021-11-25 17:52:00,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:52:00,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:52:00,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:52:00,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:52:00,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:00" (1/1) ... [2021-11-25 17:52:00,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:00" (1/1) ... [2021-11-25 17:52:01,020 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-11-25 17:52:01,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:52:01,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:52:01,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:52:01,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:52:01,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:00" (1/1) ... [2021-11-25 17:52:01,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:00" (1/1) ... [2021-11-25 17:52:01,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:00" (1/1) ... [2021-11-25 17:52:01,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:00" (1/1) ... [2021-11-25 17:52:01,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:00" (1/1) ... [2021-11-25 17:52:01,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:00" (1/1) ... [2021-11-25 17:52:01,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:00" (1/1) ... [2021-11-25 17:52:01,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:52:01,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:52:01,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:52:01,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:52:01,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:00" (1/1) ... [2021-11-25 17:52:01,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:52:01,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:52:01,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:52:01,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:52:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:52:01,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 17:52:01,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:52:01,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:52:01,243 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:52:01,245 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:52:01,446 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:52:01,523 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:52:01,524 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 17:52:01,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:52:01 BoogieIcfgContainer [2021-11-25 17:52:01,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:52:01,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:52:01,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:52:01,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:52:01,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:52:00" (1/3) ... [2021-11-25 17:52:01,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6063f14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:52:01, skipping insertion in model container [2021-11-25 17:52:01,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:00" (2/3) ... [2021-11-25 17:52:01,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6063f14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:52:01, skipping insertion in model container [2021-11-25 17:52:01,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:52:01" (3/3) ... [2021-11-25 17:52:01,554 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_7.i [2021-11-25 17:52:01,560 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:52:01,575 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 17:52:01,625 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:52:01,633 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=FINITE_AUTOMATA, 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 [2021-11-25 17:52:01,633 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 17:52:01,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 14 states have internal predecessors, (19), 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) [2021-11-25 17:52:01,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 17:52:01,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:01,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 17:52:01,655 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:52:01,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:01,661 INFO L85 PathProgramCache]: Analyzing trace with hash 3484809, now seen corresponding path program 1 times [2021-11-25 17:52:01,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:01,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937663935] [2021-11-25 17:52:01,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:01,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:52:01,767 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 17:52:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:52:01,801 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 17:52:01,803 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 17:52:01,804 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 17:52:01,806 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 17:52:01,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:52:01,811 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-25 17:52:01,814 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 17:52:01,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:52:01 BoogieIcfgContainer [2021-11-25 17:52:01,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 17:52:01,835 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 17:52:01,835 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 17:52:01,835 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 17:52:01,835 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:52:01" (3/4) ... [2021-11-25 17:52:01,838 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 17:52:01,839 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 17:52:01,840 INFO L158 Benchmark]: Toolchain (without parser) took 1308.77ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 72.8MB in the beginning and 73.3MB in the end (delta: -472.5kB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2021-11-25 17:52:01,841 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 96.5MB. Free memory is still 52.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:52:01,841 INFO L158 Benchmark]: CACSL2BoogieTranslator took 420.82ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 72.5MB in the beginning and 102.6MB in the end (delta: -30.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 17:52:01,842 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.61ms. Allocated memory is still 127.9MB. Free memory was 102.6MB in the beginning and 100.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 17:52:01,843 INFO L158 Benchmark]: Boogie Preprocessor took 51.56ms. Allocated memory is still 127.9MB. Free memory was 100.6MB in the beginning and 99.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:52:01,843 INFO L158 Benchmark]: RCFGBuilder took 453.19ms. Allocated memory is still 127.9MB. Free memory was 99.4MB in the beginning and 86.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 17:52:01,844 INFO L158 Benchmark]: TraceAbstraction took 286.77ms. Allocated memory is still 127.9MB. Free memory was 86.3MB in the beginning and 73.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 17:52:01,847 INFO L158 Benchmark]: Witness Printer took 4.14ms. Allocated memory is still 127.9MB. Free memory was 73.7MB in the beginning and 73.3MB in the end (delta: 400.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:52:01,854 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 96.5MB. Free memory is still 52.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 420.82ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 72.5MB in the beginning and 102.6MB in the end (delta: -30.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.61ms. Allocated memory is still 127.9MB. Free memory was 102.6MB in the beginning and 100.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.56ms. Allocated memory is still 127.9MB. Free memory was 100.6MB in the beginning and 99.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 453.19ms. Allocated memory is still 127.9MB. Free memory was 99.4MB in the beginning and 86.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 286.77ms. Allocated memory is still 127.9MB. Free memory was 86.3MB in the beginning and 73.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.14ms. Allocated memory is still 127.9MB. Free memory was 73.7MB in the beginning and 73.3MB in the end (delta: 400.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 102]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 80. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=49] [L102] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-25 17:52:01,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/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_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_1_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b8d2b9f69b0c816e269dea56d57200f8896cad5b0d3fcdf300db44a3be91845d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:52:04,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:52:04,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:52:04,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:52:04,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:52:04,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:52:04,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:52:04,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:52:04,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:52:04,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:52:04,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:52:04,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:52:04,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:52:04,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:52:04,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:52:04,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:52:04,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:52:04,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:52:04,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:52:04,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:52:04,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:52:04,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:52:04,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:52:04,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:52:04,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:52:04,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:52:04,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:52:04,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:52:04,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:52:04,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:52:04,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:52:04,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:52:04,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:52:04,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:52:04,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:52:04,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:52:04,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:52:04,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:52:04,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:52:04,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:52:04,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:52:04,472 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 17:52:04,517 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:52:04,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:52:04,518 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:52:04,518 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:52:04,519 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:52:04,519 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:52:04,520 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:52:04,520 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:52:04,520 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:52:04,520 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:52:04,521 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:52:04,522 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:52:04,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:52:04,524 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 17:52:04,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 17:52:04,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:52:04,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:52:04,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:52:04,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:52:04,525 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 17:52:04,525 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 17:52:04,526 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 17:52:04,526 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 17:52:04,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:52:04,526 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:52:04,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:52:04,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:52:04,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 17:52:04,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:52:04,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:52:04,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:52:04,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:52:04,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:52:04,529 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 17:52:04,529 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 17:52:04,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:52:04,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:52:04,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:52:04,530 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_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8d2b9f69b0c816e269dea56d57200f8896cad5b0d3fcdf300db44a3be91845d [2021-11-25 17:52:04,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:52:04,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:52:04,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:52:04,950 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:52:04,952 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:52:04,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/gcd_2+newton_1_7.i [2021-11-25 17:52:05,020 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/data/a5f3f8bee/08ad90c00d354bbfbc6bd22e491038d8/FLAG2b9c2c1bf [2021-11-25 17:52:05,466 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:52:05,467 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/sv-benchmarks/c/combinations/gcd_2+newton_1_7.i [2021-11-25 17:52:05,493 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/data/a5f3f8bee/08ad90c00d354bbfbc6bd22e491038d8/FLAG2b9c2c1bf [2021-11-25 17:52:05,831 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/data/a5f3f8bee/08ad90c00d354bbfbc6bd22e491038d8 [2021-11-25 17:52:05,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:52:05,837 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:52:05,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:52:05,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:52:05,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:52:05,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:52:05" (1/1) ... [2021-11-25 17:52:05,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5299b99f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:05, skipping insertion in model container [2021-11-25 17:52:05,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:52:05" (1/1) ... [2021-11-25 17:52:05,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:52:05,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:52:06,061 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_e8e4fb0c-8f34-4833-a17a-983a006d6b98/sv-benchmarks/c/combinations/gcd_2+newton_1_7.i[1226,1239] [2021-11-25 17:52:06,088 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_e8e4fb0c-8f34-4833-a17a-983a006d6b98/sv-benchmarks/c/combinations/gcd_2+newton_1_7.i[2820,2833] [2021-11-25 17:52:06,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:52:06,105 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:52:06,145 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/sv-benchmarks/c/combinations/gcd_2+newton_1_7.i[1226,1239] [2021-11-25 17:52:06,175 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_e8e4fb0c-8f34-4833-a17a-983a006d6b98/sv-benchmarks/c/combinations/gcd_2+newton_1_7.i[2820,2833] [2021-11-25 17:52:06,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:52:06,207 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:52:06,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:06 WrapperNode [2021-11-25 17:52:06,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:52:06,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:52:06,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:52:06,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:52:06,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:06" (1/1) ... [2021-11-25 17:52:06,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:06" (1/1) ... [2021-11-25 17:52:06,274 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-11-25 17:52:06,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:52:06,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:52:06,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:52:06,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:52:06,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:06" (1/1) ... [2021-11-25 17:52:06,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:06" (1/1) ... [2021-11-25 17:52:06,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:06" (1/1) ... [2021-11-25 17:52:06,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:06" (1/1) ... [2021-11-25 17:52:06,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:06" (1/1) ... [2021-11-25 17:52:06,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:06" (1/1) ... [2021-11-25 17:52:06,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:06" (1/1) ... [2021-11-25 17:52:06,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:52:06,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:52:06,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:52:06,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:52:06,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:06" (1/1) ... [2021-11-25 17:52:06,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:52:06,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:52:06,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:52:06,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:52:06,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:52:06,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 17:52:06,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:52:06,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:52:06,452 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:52:06,453 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:52:12,809 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:52:12,815 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:52:12,815 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 17:52:12,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:52:12 BoogieIcfgContainer [2021-11-25 17:52:12,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:52:12,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:52:12,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:52:12,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:52:12,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:52:05" (1/3) ... [2021-11-25 17:52:12,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c09e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:52:12, skipping insertion in model container [2021-11-25 17:52:12,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:06" (2/3) ... [2021-11-25 17:52:12,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c09e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:52:12, skipping insertion in model container [2021-11-25 17:52:12,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:52:12" (3/3) ... [2021-11-25 17:52:12,825 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_7.i [2021-11-25 17:52:12,830 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:52:12,830 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 17:52:12,876 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:52:12,883 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=FINITE_AUTOMATA, 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 [2021-11-25 17:52:12,884 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 17:52:12,897 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:12,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 17:52:12,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:12,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:52:12,915 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:52:12,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:12,920 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-11-25 17:52:12,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:52:12,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837488417] [2021-11-25 17:52:12,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:12,933 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:52:12,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:52:12,939 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:52:12,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 17:52:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:14,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 17:52:14,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:52:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:14,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:52:14,252 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:52:14,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837488417] [2021-11-25 17:52:14,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837488417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:14,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:14,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 17:52:14,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202537848] [2021-11-25 17:52:14,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:14,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 17:52:14,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:52:14,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 17:52:14,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 17:52:14,292 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:14,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:14,308 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-11-25 17:52:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 17:52:14,310 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 [2021-11-25 17:52:14,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:14,317 INFO L225 Difference]: With dead ends: 47 [2021-11-25 17:52:14,318 INFO L226 Difference]: Without dead ends: 19 [2021-11-25 17:52:14,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 17:52:14,325 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:14,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:52:14,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-25 17:52:14,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-25 17:52:14,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:14,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-25 17:52:14,357 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-11-25 17:52:14,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:14,358 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-25 17:52:14,358 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) [2021-11-25 17:52:14,358 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-25 17:52:14,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 17:52:14,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:14,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:52:14,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 17:52:14,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:52:14,576 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:52:14,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:14,577 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-11-25 17:52:14,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:52:14,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712793213] [2021-11-25 17:52:14,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:14,579 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:52:14,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:52:14,580 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:52:14,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 17:52:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:52:19,214 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 17:54:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:54:08,145 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-25 17:54:08,145 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 17:54:08,147 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 17:54:08,148 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 17:54:08,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 17:54:08,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:54:08,352 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-25 17:54:08,355 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 17:54:08,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:54:08 BoogieIcfgContainer [2021-11-25 17:54:08,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 17:54:08,377 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 17:54:08,377 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 17:54:08,377 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 17:54:08,378 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:52:12" (3/4) ... [2021-11-25 17:54:08,380 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 17:54:08,416 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 17:54:08,416 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 17:54:08,417 INFO L158 Benchmark]: Toolchain (without parser) took 122580.28ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 46.8MB in the beginning and 40.4MB in the end (delta: 6.4MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2021-11-25 17:54:08,418 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 65.0MB. Free memory is still 46.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:54:08,418 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.76ms. Allocated memory is still 65.0MB. Free memory was 46.7MB in the beginning and 46.9MB in the end (delta: -241.1kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 17:54:08,419 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.77ms. Allocated memory is still 65.0MB. Free memory was 46.8MB in the beginning and 45.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:54:08,419 INFO L158 Benchmark]: Boogie Preprocessor took 36.39ms. Allocated memory is still 65.0MB. Free memory was 45.1MB in the beginning and 43.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 17:54:08,420 INFO L158 Benchmark]: RCFGBuilder took 6504.23ms. Allocated memory is still 65.0MB. Free memory was 43.5MB in the beginning and 33.3MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 17:54:08,420 INFO L158 Benchmark]: TraceAbstraction took 115557.75ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 32.8MB in the beginning and 42.5MB in the end (delta: -9.6MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2021-11-25 17:54:08,421 INFO L158 Benchmark]: Witness Printer took 39.51ms. Allocated memory is still 79.7MB. Free memory was 42.5MB in the beginning and 40.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 17:54:08,423 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 65.0MB. Free memory is still 46.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 368.76ms. Allocated memory is still 65.0MB. Free memory was 46.7MB in the beginning and 46.9MB in the end (delta: -241.1kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.77ms. Allocated memory is still 65.0MB. Free memory was 46.8MB in the beginning and 45.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.39ms. Allocated memory is still 65.0MB. Free memory was 45.1MB in the beginning and 43.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 6504.23ms. Allocated memory is still 65.0MB. Free memory was 43.5MB in the beginning and 33.3MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 115557.75ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 32.8MB in the beginning and 42.5MB in the end (delta: -9.6MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. * Witness Printer took 39.51ms. Allocated memory is still 79.7MB. Free memory was 42.5MB in the beginning and 40.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 102]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=-1.3358972072601318, \result=-0.9755142331123352, x=-1.3358972072601318] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-1.3358972072601318, \result=0.24828653037548065, x=-1.3358972072601318] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=-1.3358972072601318, x=2.5930886268615723] [L102] reach_error() VAL [IN=-1.3358972072601318, x=2.5930886268615723] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 115.5s, 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, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 5.7s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-25 17:54:08,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e4fb0c-8f34-4833-a17a-983a006d6b98/bin/utaipan-eEHZpOm5b7/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