./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_4+newton_1_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl --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 8d5852a96a997fd819a9dfc3e184ca8c6360d14970e60ecfb10d610384c98f94 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:45:57,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:45:57,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:45:57,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:45:57,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:45:57,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:45:57,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:45:57,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:45:57,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:45:57,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:45:57,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:45:57,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:45:57,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:45:57,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:45:57,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:45:57,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:45:57,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:45:57,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:45:57,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:45:57,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:45:57,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:45:57,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:45:57,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:45:57,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:45:57,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:45:57,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:45:57,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:45:57,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:45:57,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:45:57,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:45:57,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:45:57,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:45:57,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:45:57,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:45:57,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:45:57,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:45:57,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:45:57,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:45:57,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:45:57,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:45:57,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:45:57,274 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:45:57,316 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:45:57,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:45:57,317 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:45:57,317 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:45:57,318 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:45:57,318 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:45:57,318 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:45:57,319 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:45:57,319 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:45:57,319 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:45:57,319 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:45:57,319 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:45:57,319 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:45:57,320 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:45:57,320 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:45:57,320 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:45:57,320 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:45:57,320 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:45:57,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:45:57,321 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:45:57,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:45:57,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:45:57,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:45:57,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:45:57,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:45:57,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:45:57,323 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:45:57,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:45:57,323 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:45:57,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:45:57,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:45:57,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:45:57,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:45:57,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:45:57,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:45:57,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:45:57,325 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:45:57,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:45:57,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:45:57,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:45:57,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:45:57,326 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_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d5852a96a997fd819a9dfc3e184ca8c6360d14970e60ecfb10d610384c98f94 [2021-11-23 16:45:57,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:45:57,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:45:57,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:45:57,630 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:45:57,631 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:45:57,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/gcd_4+newton_1_6.i [2021-11-23 16:45:57,720 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/data/bdbbfe3cf/e4422cc5e6ad4c109109d2aa6af941f3/FLAG0be7750e7 [2021-11-23 16:45:58,197 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:45:58,197 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/sv-benchmarks/c/combinations/gcd_4+newton_1_6.i [2021-11-23 16:45:58,205 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/data/bdbbfe3cf/e4422cc5e6ad4c109109d2aa6af941f3/FLAG0be7750e7 [2021-11-23 16:45:58,565 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/data/bdbbfe3cf/e4422cc5e6ad4c109109d2aa6af941f3 [2021-11-23 16:45:58,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:45:58,572 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:45:58,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:45:58,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:45:58,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:45:58,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:58" (1/1) ... [2021-11-23 16:45:58,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1835ed67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:58, skipping insertion in model container [2021-11-23 16:45:58,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:58" (1/1) ... [2021-11-23 16:45:58,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:45:58,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:45:58,817 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_34e4064a-71d6-44ec-9cce-accc6f49550f/sv-benchmarks/c/combinations/gcd_4+newton_1_6.i[1224,1237] [2021-11-23 16:45:58,843 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_34e4064a-71d6-44ec-9cce-accc6f49550f/sv-benchmarks/c/combinations/gcd_4+newton_1_6.i[2806,2819] [2021-11-23 16:45:58,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:45:58,853 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:45:58,866 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_34e4064a-71d6-44ec-9cce-accc6f49550f/sv-benchmarks/c/combinations/gcd_4+newton_1_6.i[1224,1237] [2021-11-23 16:45:58,877 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_34e4064a-71d6-44ec-9cce-accc6f49550f/sv-benchmarks/c/combinations/gcd_4+newton_1_6.i[2806,2819] [2021-11-23 16:45:58,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:45:58,893 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:45:58,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:58 WrapperNode [2021-11-23 16:45:58,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:45:58,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:45:58,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:45:58,895 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:45:58,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:58" (1/1) ... [2021-11-23 16:45:58,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:58" (1/1) ... [2021-11-23 16:45:58,933 INFO L137 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 73 [2021-11-23 16:45:58,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:45:58,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:45:58,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:45:58,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:45:58,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:58" (1/1) ... [2021-11-23 16:45:58,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:58" (1/1) ... [2021-11-23 16:45:58,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:58" (1/1) ... [2021-11-23 16:45:58,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:58" (1/1) ... [2021-11-23 16:45:58,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:58" (1/1) ... [2021-11-23 16:45:58,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:58" (1/1) ... [2021-11-23 16:45:58,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:58" (1/1) ... [2021-11-23 16:45:58,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:45:58,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:45:58,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:45:58,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:45:58,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:58" (1/1) ... [2021-11-23 16:45:58,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:45:58,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:45:59,007 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:45:59,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:45:59,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:45:59,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:45:59,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:45:59,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:45:59,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 16:45:59,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 16:45:59,112 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:45:59,114 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:45:59,259 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:45:59,278 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 16:45:59,283 INFO L158 Benchmark]: Toolchain (without parser) took 710.00ms. Allocated memory is still 92.3MB. Free memory was 52.1MB in the beginning and 53.4MB in the end (delta: -1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:45:59,284 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory was 68.2MB in the beginning and 68.1MB in the end (delta: 53.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:45:59,285 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.60ms. Allocated memory is still 92.3MB. Free memory was 51.9MB in the beginning and 67.4MB in the end (delta: -15.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:45:59,286 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.91ms. Allocated memory is still 92.3MB. Free memory was 67.4MB in the beginning and 65.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:45:59,287 INFO L158 Benchmark]: Boogie Preprocessor took 26.13ms. Allocated memory is still 92.3MB. Free memory was 65.6MB in the beginning and 64.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:45:59,288 INFO L158 Benchmark]: RCFGBuilder took 319.82ms. Allocated memory is still 92.3MB. Free memory was 64.3MB in the beginning and 53.4MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 16:45:59,292 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory was 68.2MB in the beginning and 68.1MB in the end (delta: 53.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.60ms. Allocated memory is still 92.3MB. Free memory was 51.9MB in the beginning and 67.4MB in the end (delta: -15.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.91ms. Allocated memory is still 92.3MB. Free memory was 67.4MB in the beginning and 65.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.13ms. Allocated memory is still 92.3MB. Free memory was 65.6MB in the beginning and 64.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 319.82ms. Allocated memory is still 92.3MB. Free memory was 64.3MB in the beginning and 53.4MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 16:45:59,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/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_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl --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 8d5852a96a997fd819a9dfc3e184ca8c6360d14970e60ecfb10d610384c98f94 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:46:01,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:46:01,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:46:01,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:46:01,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:46:01,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:46:01,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:46:01,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:46:01,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:46:01,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:46:01,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:46:01,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:46:01,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:46:01,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:46:01,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:46:01,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:46:01,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:46:01,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:46:01,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:46:01,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:46:01,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:46:01,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:46:01,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:46:01,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:46:01,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:46:01,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:46:01,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:46:01,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:46:01,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:46:01,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:46:01,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:46:01,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:46:01,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:46:01,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:46:01,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:46:01,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:46:01,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:46:01,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:46:01,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:46:01,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:46:01,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:46:01,959 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:46:02,009 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:46:02,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:46:02,010 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:46:02,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:46:02,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:46:02,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:46:02,012 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:46:02,013 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:46:02,013 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:46:02,013 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:46:02,014 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:46:02,015 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:46:02,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:46:02,017 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:46:02,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:46:02,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:46:02,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:46:02,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:46:02,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:46:02,019 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:46:02,019 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:46:02,019 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:46:02,020 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:46:02,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:46:02,020 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:46:02,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:46:02,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:46:02,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:46:02,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:46:02,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:46:02,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:46:02,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:46:02,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:46:02,023 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:46:02,023 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:46:02,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:46:02,024 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:46:02,024 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:46:02,024 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_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d5852a96a997fd819a9dfc3e184ca8c6360d14970e60ecfb10d610384c98f94 [2021-11-23 16:46:02,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:46:02,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:46:02,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:46:02,466 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:46:02,467 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:46:02,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/gcd_4+newton_1_6.i [2021-11-23 16:46:02,549 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/data/0e9d3eb53/9e8ba21d39024584bed546a91b128a00/FLAG7d66ed014 [2021-11-23 16:46:03,107 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:46:03,108 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/sv-benchmarks/c/combinations/gcd_4+newton_1_6.i [2021-11-23 16:46:03,121 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/data/0e9d3eb53/9e8ba21d39024584bed546a91b128a00/FLAG7d66ed014 [2021-11-23 16:46:03,455 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/data/0e9d3eb53/9e8ba21d39024584bed546a91b128a00 [2021-11-23 16:46:03,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:46:03,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:46:03,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:46:03,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:46:03,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:46:03,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:46:03" (1/1) ... [2021-11-23 16:46:03,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@776e1c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:03, skipping insertion in model container [2021-11-23 16:46:03,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:46:03" (1/1) ... [2021-11-23 16:46:03,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:46:03,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:46:03,697 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_34e4064a-71d6-44ec-9cce-accc6f49550f/sv-benchmarks/c/combinations/gcd_4+newton_1_6.i[1224,1237] [2021-11-23 16:46:03,759 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_34e4064a-71d6-44ec-9cce-accc6f49550f/sv-benchmarks/c/combinations/gcd_4+newton_1_6.i[2806,2819] [2021-11-23 16:46:03,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:46:03,790 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:46:03,813 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_34e4064a-71d6-44ec-9cce-accc6f49550f/sv-benchmarks/c/combinations/gcd_4+newton_1_6.i[1224,1237] [2021-11-23 16:46:03,863 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_34e4064a-71d6-44ec-9cce-accc6f49550f/sv-benchmarks/c/combinations/gcd_4+newton_1_6.i[2806,2819] [2021-11-23 16:46:03,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:46:03,882 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:46:03,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:03 WrapperNode [2021-11-23 16:46:03,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:46:03,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:46:03,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:46:03,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:46:03,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:03" (1/1) ... [2021-11-23 16:46:03,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:03" (1/1) ... [2021-11-23 16:46:03,952 INFO L137 Inliner]: procedures = 28, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 70 [2021-11-23 16:46:03,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:46:03,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:46:03,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:46:03,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:46:03,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:03" (1/1) ... [2021-11-23 16:46:03,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:03" (1/1) ... [2021-11-23 16:46:03,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:03" (1/1) ... [2021-11-23 16:46:03,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:03" (1/1) ... [2021-11-23 16:46:03,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:03" (1/1) ... [2021-11-23 16:46:03,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:03" (1/1) ... [2021-11-23 16:46:04,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:03" (1/1) ... [2021-11-23 16:46:04,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:46:04,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:46:04,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:46:04,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:46:04,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:03" (1/1) ... [2021-11-23 16:46:04,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:46:04,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:46:04,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:46:04,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:46:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:46:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:46:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:46:04,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:46:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 16:46:04,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 16:46:04,225 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:46:04,227 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:46:11,213 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:46:11,220 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:46:11,221 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 16:46:11,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:46:11 BoogieIcfgContainer [2021-11-23 16:46:11,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:46:11,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:46:11,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:46:11,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:46:11,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:46:03" (1/3) ... [2021-11-23 16:46:11,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3ad615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:46:11, skipping insertion in model container [2021-11-23 16:46:11,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:03" (2/3) ... [2021-11-23 16:46:11,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3ad615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:46:11, skipping insertion in model container [2021-11-23 16:46:11,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:46:11" (3/3) ... [2021-11-23 16:46:11,233 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_6.i [2021-11-23 16:46:11,239 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:46:11,239 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 16:46:11,293 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:46:11,300 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 [2021-11-23 16:46:11,300 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 16:46:11,328 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) [2021-11-23 16:46:11,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 16:46:11,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:11,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:11,334 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:46:11,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:11,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2021-11-23 16:46:11,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:11,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457149206] [2021-11-23 16:46:11,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:11,355 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:11,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:11,359 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:11,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:46:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:12,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 16:46:12,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:12,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:12,933 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:12,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457149206] [2021-11-23 16:46:12,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457149206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:12,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:12,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 16:46:12,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824617128] [2021-11-23 16:46:12,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:12,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 16:46:12,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:12,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 16:46:12,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 16:46:12,975 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) [2021-11-23 16:46:12,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:12,999 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2021-11-23 16:46:13,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 16:46:13,001 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 [2021-11-23 16:46:13,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:13,009 INFO L225 Difference]: With dead ends: 57 [2021-11-23 16:46:13,010 INFO L226 Difference]: Without dead ends: 26 [2021-11-23 16:46:13,013 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 [2021-11-23 16:46:13,018 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 [2021-11-23 16:46:13,020 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] [2021-11-23 16:46:13,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-23 16:46:13,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-23 16:46:13,059 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) [2021-11-23 16:46:13,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-11-23 16:46:13,062 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2021-11-23 16:46:13,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:13,063 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-11-23 16:46:13,063 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) [2021-11-23 16:46:13,063 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-11-23 16:46:13,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 16:46:13,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:13,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:13,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:13,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:13,273 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:46:13,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:13,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2021-11-23 16:46:13,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:13,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455752789] [2021-11-23 16:46:13,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:13,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:13,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:13,277 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:13,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 16:46:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 16:46:20,968 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 16:46:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 16:46:31,044 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-23 16:46:31,044 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 16:46:31,046 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-23 16:46:31,048 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-23 16:46:31,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-23 16:46:31,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:31,253 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-23 16:46:31,257 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 16:46:31,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:46:31 BoogieIcfgContainer [2021-11-23 16:46:31,288 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 16:46:31,288 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 16:46:31,289 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 16:46:31,289 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 16:46:31,289 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:46:11" (3/4) ... [2021-11-23 16:46:31,291 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 16:46:31,330 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/witness.graphml [2021-11-23 16:46:31,330 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 16:46:31,331 INFO L158 Benchmark]: Toolchain (without parser) took 27872.20ms. Allocated memory is still 71.3MB. Free memory was 52.7MB in the beginning and 34.5MB in the end (delta: 18.2MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2021-11-23 16:46:31,332 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 71.3MB. Free memory is still 51.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:46:31,333 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.74ms. Allocated memory is still 71.3MB. Free memory was 52.4MB in the beginning and 52.4MB in the end (delta: -43.9kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 16:46:31,334 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.70ms. Allocated memory is still 71.3MB. Free memory was 52.4MB in the beginning and 50.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:46:31,334 INFO L158 Benchmark]: Boogie Preprocessor took 61.89ms. Allocated memory is still 71.3MB. Free memory was 50.5MB in the beginning and 49.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:46:31,335 INFO L158 Benchmark]: RCFGBuilder took 7207.57ms. Allocated memory is still 71.3MB. Free memory was 49.0MB in the beginning and 38.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 16:46:31,336 INFO L158 Benchmark]: TraceAbstraction took 20062.41ms. Allocated memory is still 71.3MB. Free memory was 37.9MB in the beginning and 36.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. [2021-11-23 16:46:31,337 INFO L158 Benchmark]: Witness Printer took 42.06ms. Allocated memory is still 71.3MB. Free memory was 36.3MB in the beginning and 34.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:46:31,340 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 71.3MB. Free memory is still 51.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 422.74ms. Allocated memory is still 71.3MB. Free memory was 52.4MB in the beginning and 52.4MB in the end (delta: -43.9kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.70ms. Allocated memory is still 71.3MB. Free memory was 52.4MB in the beginning and 50.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.89ms. Allocated memory is still 71.3MB. Free memory was 50.5MB in the beginning and 49.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 7207.57ms. Allocated memory is still 71.3MB. Free memory was 49.0MB in the beginning and 38.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 20062.41ms. Allocated memory is still 71.3MB. Free memory was 37.9MB in the beginning and 36.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. * Witness Printer took 42.06ms. Allocated memory is still 71.3MB. Free memory was 36.3MB in the beginning and 34.5MB in the end (delta: 1.8MB). 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 > -1.2f && IN < 1.2f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L100] CALL, EXPR f(IN) [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=-1.093648910522461, \result=-0.8890450596809387, x=-1.093648910522461] [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-1.093648910522461, \result=0.463949978351593, x=-1.093648910522461] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=-1.093648910522461, x=0.8226031064987183] [L109] reach_error() VAL [IN=-1.093648910522461, x=0.8226031064987183] - 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: 20.0s, 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, 8 GetRequests, 8 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, 9.0s SatisfiabilityAnalysisTime, 0.2s 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! [2021-11-23 16:46:31,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e4064a-71d6-44ec-9cce-accc6f49550f/bin/utaipan-fb15Y9Yzbl/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