./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_1_3.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_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/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_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_1_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/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_5a97f822-8bde-4746-ab6a-6ae59867af97/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 17445458ba8d623c3c0fdc1c0c03b23eaf5b75fd03e8e26d6837d08cfa4b709a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:17:50,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:17:50,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:17:50,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:17:50,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:17:50,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:17:50,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:17:50,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:17:50,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:17:50,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:17:50,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:17:50,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:17:50,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:17:50,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:17:50,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:17:50,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:17:50,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:17:50,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:17:50,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:17:50,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:17:50,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:17:50,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:17:50,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:17:50,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:17:50,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:17:50,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:17:50,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:17:50,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:17:50,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:17:50,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:17:50,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:17:50,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:17:50,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:17:50,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:17:50,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:17:50,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:17:50,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:17:50,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:17:50,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:17:50,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:17:50,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:17:50,966 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 18:17:51,020 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:17:51,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:17:51,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:17:51,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:17:51,022 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:17:51,022 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:17:51,022 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:17:51,022 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:17:51,023 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:17:51,023 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:17:51,023 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:17:51,023 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:17:51,024 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:17:51,024 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:17:51,024 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:17:51,025 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:17:51,025 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:17:51,025 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:17:51,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:17:51,026 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:17:51,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:17:51,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:17:51,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:17:51,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:17:51,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:17:51,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:17:51,028 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:17:51,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:17:51,028 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:17:51,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:17:51,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:17:51,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:17:51,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:17:51,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:17:51,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:17:51,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:17:51,045 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:17:51,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:17:51,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:17:51,046 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:17:51,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:17:51,046 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_5a97f822-8bde-4746-ab6a-6ae59867af97/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17445458ba8d623c3c0fdc1c0c03b23eaf5b75fd03e8e26d6837d08cfa4b709a [2021-11-25 18:17:51,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:17:51,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:17:51,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:17:51,389 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:17:51,390 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:17:51,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/gcd_3+newton_1_3.i [2021-11-25 18:17:51,470 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/data/7128e3f5b/fdc67ce94623463ca43de1d777e57345/FLAG1356b55df [2021-11-25 18:17:52,040 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:17:52,041 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i [2021-11-25 18:17:52,050 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/data/7128e3f5b/fdc67ce94623463ca43de1d777e57345/FLAG1356b55df [2021-11-25 18:17:52,371 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/data/7128e3f5b/fdc67ce94623463ca43de1d777e57345 [2021-11-25 18:17:52,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:17:52,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:17:52,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:17:52,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:17:52,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:17:52,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:17:52" (1/1) ... [2021-11-25 18:17:52,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@708c2314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52, skipping insertion in model container [2021-11-25 18:17:52,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:17:52" (1/1) ... [2021-11-25 18:17:52,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:17:52,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:17:52,643 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_5a97f822-8bde-4746-ab6a-6ae59867af97/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i[1226,1239] [2021-11-25 18:17:52,680 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_5a97f822-8bde-4746-ab6a-6ae59867af97/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i[2820,2833] [2021-11-25 18:17:52,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:17:52,692 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:17:52,708 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_5a97f822-8bde-4746-ab6a-6ae59867af97/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i[1226,1239] [2021-11-25 18:17:52,723 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_5a97f822-8bde-4746-ab6a-6ae59867af97/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i[2820,2833] [2021-11-25 18:17:52,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:17:52,742 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:17:52,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52 WrapperNode [2021-11-25 18:17:52,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:17:52,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:17:52,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:17:52,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:17:52,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (1/1) ... [2021-11-25 18:17:52,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (1/1) ... [2021-11-25 18:17:52,799 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-11-25 18:17:52,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:17:52,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:17:52,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:17:52,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:17:52,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (1/1) ... [2021-11-25 18:17:52,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (1/1) ... [2021-11-25 18:17:52,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (1/1) ... [2021-11-25 18:17:52,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (1/1) ... [2021-11-25 18:17:52,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (1/1) ... [2021-11-25 18:17:52,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (1/1) ... [2021-11-25 18:17:52,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (1/1) ... [2021-11-25 18:17:52,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:17:52,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:17:52,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:17:52,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:17:52,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (1/1) ... [2021-11-25 18:17:52,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:17:52,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:17:52,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:17:52,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:17:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:17:52,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:17:52,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:17:52,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:17:53,067 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:17:53,069 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:17:53,284 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:17:53,378 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:17:53,378 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 18:17:53,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:17:53 BoogieIcfgContainer [2021-11-25 18:17:53,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:17:53,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:17:53,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:17:53,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:17:53,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:17:52" (1/3) ... [2021-11-25 18:17:53,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca03064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:17:53, skipping insertion in model container [2021-11-25 18:17:53,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (2/3) ... [2021-11-25 18:17:53,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca03064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:17:53, skipping insertion in model container [2021-11-25 18:17:53,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:17:53" (3/3) ... [2021-11-25 18:17:53,394 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_3.i [2021-11-25 18:17:53,401 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:17:53,401 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 18:17:53,466 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:17:53,475 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 18:17:53,478 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 18:17:53,506 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 18:17:53,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 18:17:53,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:53,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 18:17:53,515 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:17:53,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:53,527 INFO L85 PathProgramCache]: Analyzing trace with hash 3484809, now seen corresponding path program 1 times [2021-11-25 18:17:53,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:53,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528406585] [2021-11-25 18:17:53,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:53,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:17:53,689 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 18:17:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:17:53,741 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 18:17:53,744 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 18:17:53,745 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 18:17:53,748 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 18:17:53,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:17:53,754 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-25 18:17:53,759 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:17:53,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:17:53 BoogieIcfgContainer [2021-11-25 18:17:53,779 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:17:53,780 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:17:53,781 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:17:53,781 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:17:53,782 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:17:53" (3/4) ... [2021-11-25 18:17:53,786 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 18:17:53,786 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:17:53,788 INFO L158 Benchmark]: Toolchain (without parser) took 1401.32ms. Allocated memory is still 117.4MB. Free memory was 94.4MB in the beginning and 87.5MB in the end (delta: 6.9MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2021-11-25 18:17:53,788 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 83.9MB. Free memory was 58.2MB in the beginning and 58.2MB in the end (delta: 40.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:17:53,789 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.15ms. Allocated memory is still 117.4MB. Free memory was 94.2MB in the beginning and 86.9MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 18:17:53,790 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.12ms. Allocated memory is still 117.4MB. Free memory was 86.7MB in the beginning and 84.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:17:53,791 INFO L158 Benchmark]: Boogie Preprocessor took 71.35ms. Allocated memory is still 117.4MB. Free memory was 84.9MB in the beginning and 83.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:17:53,792 INFO L158 Benchmark]: RCFGBuilder took 503.21ms. Allocated memory is still 117.4MB. Free memory was 83.7MB in the beginning and 71.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 18:17:53,793 INFO L158 Benchmark]: TraceAbstraction took 395.26ms. Allocated memory is still 117.4MB. Free memory was 70.8MB in the beginning and 87.9MB in the end (delta: -17.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:17:53,794 INFO L158 Benchmark]: Witness Printer took 5.83ms. Allocated memory is still 117.4MB. Free memory was 87.9MB in the beginning and 87.5MB in the end (delta: 473.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:17:53,799 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 83.9MB. Free memory was 58.2MB in the beginning and 58.2MB in the end (delta: 40.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 355.15ms. Allocated memory is still 117.4MB. Free memory was 94.2MB in the beginning and 86.9MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.12ms. Allocated memory is still 117.4MB. Free memory was 86.7MB in the beginning and 84.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.35ms. Allocated memory is still 117.4MB. Free memory was 84.9MB in the beginning and 83.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 503.21ms. Allocated memory is still 117.4MB. Free memory was 83.7MB in the beginning and 71.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 395.26ms. Allocated memory is still 117.4MB. Free memory was 70.8MB in the beginning and 87.9MB in the end (delta: -17.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.83ms. Allocated memory is still 117.4MB. Free memory was 87.9MB in the beginning and 87.5MB in the end (delta: 473.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 > -0.6f && IN < 0.6f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -0.6f && IN < 0.6f) [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: 0.3s, 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 18:17:53,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/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_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/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_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_1_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/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_5a97f822-8bde-4746-ab6a-6ae59867af97/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 17445458ba8d623c3c0fdc1c0c03b23eaf5b75fd03e8e26d6837d08cfa4b709a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:17:56,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:17:56,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:17:56,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:17:56,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:17:56,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:17:56,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:17:56,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:17:56,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:17:56,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:17:56,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:17:56,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:17:56,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:17:56,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:17:56,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:17:56,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:17:56,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:17:56,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:17:56,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:17:56,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:17:56,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:17:56,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:17:57,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:17:57,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:17:57,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:17:57,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:17:57,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:17:57,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:17:57,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:17:57,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:17:57,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:17:57,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:17:57,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:17:57,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:17:57,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:17:57,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:17:57,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:17:57,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:17:57,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:17:57,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:17:57,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:17:57,020 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 18:17:57,054 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:17:57,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:17:57,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:17:57,055 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:17:57,056 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:17:57,056 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:17:57,056 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:17:57,056 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:17:57,057 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:17:57,057 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:17:57,057 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:17:57,057 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:17:57,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:17:57,059 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:17:57,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:17:57,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:17:57,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:17:57,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:17:57,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:17:57,060 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 18:17:57,060 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 18:17:57,061 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 18:17:57,061 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:17:57,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:17:57,061 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:17:57,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:17:57,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:17:57,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 18:17:57,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:17:57,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:17:57,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:17:57,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:17:57,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:17:57,064 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 18:17:57,064 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 18:17:57,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:17:57,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:17:57,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:17:57,065 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_5a97f822-8bde-4746-ab6a-6ae59867af97/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17445458ba8d623c3c0fdc1c0c03b23eaf5b75fd03e8e26d6837d08cfa4b709a [2021-11-25 18:17:57,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:17:57,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:17:57,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:17:57,531 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:17:57,532 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:17:57,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/gcd_3+newton_1_3.i [2021-11-25 18:17:57,634 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/data/9bc71f05a/ec75b8cee92447d99d2225dc041c656e/FLAG048e996a7 [2021-11-25 18:17:58,266 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:17:58,267 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i [2021-11-25 18:17:58,282 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/data/9bc71f05a/ec75b8cee92447d99d2225dc041c656e/FLAG048e996a7 [2021-11-25 18:17:58,594 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/data/9bc71f05a/ec75b8cee92447d99d2225dc041c656e [2021-11-25 18:17:58,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:17:58,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:17:58,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:17:58,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:17:58,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:17:58,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:17:58" (1/1) ... [2021-11-25 18:17:58,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@582c11cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:58, skipping insertion in model container [2021-11-25 18:17:58,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:17:58" (1/1) ... [2021-11-25 18:17:58,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:17:58,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:17:58,800 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_5a97f822-8bde-4746-ab6a-6ae59867af97/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i[1226,1239] [2021-11-25 18:17:58,834 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_5a97f822-8bde-4746-ab6a-6ae59867af97/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i[2820,2833] [2021-11-25 18:17:58,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:17:58,852 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:17:58,915 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_5a97f822-8bde-4746-ab6a-6ae59867af97/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i[1226,1239] [2021-11-25 18:17:58,943 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_5a97f822-8bde-4746-ab6a-6ae59867af97/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i[2820,2833] [2021-11-25 18:17:58,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:17:58,967 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:17:58,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:58 WrapperNode [2021-11-25 18:17:58,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:17:58,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:17:58,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:17:58,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:17:58,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:58" (1/1) ... [2021-11-25 18:17:58,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:58" (1/1) ... [2021-11-25 18:17:59,017 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-11-25 18:17:59,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:17:59,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:17:59,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:17:59,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:17:59,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:58" (1/1) ... [2021-11-25 18:17:59,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:58" (1/1) ... [2021-11-25 18:17:59,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:58" (1/1) ... [2021-11-25 18:17:59,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:58" (1/1) ... [2021-11-25 18:17:59,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:58" (1/1) ... [2021-11-25 18:17:59,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:58" (1/1) ... [2021-11-25 18:17:59,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:58" (1/1) ... [2021-11-25 18:17:59,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:17:59,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:17:59,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:17:59,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:17:59,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:58" (1/1) ... [2021-11-25 18:17:59,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:17:59,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:17:59,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:17:59,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:17:59,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:17:59,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 18:17:59,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:17:59,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:17:59,262 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:17:59,264 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:18:06,213 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:18:06,219 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:18:06,219 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 18:18:06,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:18:06 BoogieIcfgContainer [2021-11-25 18:18:06,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:18:06,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:18:06,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:18:06,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:18:06,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:17:58" (1/3) ... [2021-11-25 18:18:06,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab7a6e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:18:06, skipping insertion in model container [2021-11-25 18:18:06,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:58" (2/3) ... [2021-11-25 18:18:06,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab7a6e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:18:06, skipping insertion in model container [2021-11-25 18:18:06,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:18:06" (3/3) ... [2021-11-25 18:18:06,233 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_3.i [2021-11-25 18:18:06,240 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:18:06,240 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 18:18:06,303 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:18:06,312 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 18:18:06,313 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 18:18:06,330 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 18:18:06,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 18:18:06,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:18:06,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:18:06,339 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:18:06,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:18:06,370 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-11-25 18:18:06,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:18:06,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889589284] [2021-11-25 18:18:06,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:18:06,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:18:06,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:18:06,392 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:18:06,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 18:18:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:18:08,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 18:18:08,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:18:08,145 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 18:18:08,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:18:08,147 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:18:08,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889589284] [2021-11-25 18:18:08,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889589284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:18:08,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:18:08,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:18:08,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718217987] [2021-11-25 18:18:08,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:18:08,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 18:18:08,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:18:08,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 18:18:08,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:18:08,225 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 18:18:08,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:18:08,244 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-11-25 18:18:08,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 18:18:08,247 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 18:18:08,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:18:08,257 INFO L225 Difference]: With dead ends: 47 [2021-11-25 18:18:08,258 INFO L226 Difference]: Without dead ends: 19 [2021-11-25 18:18:08,261 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 18:18:08,266 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 18:18:08,268 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 18:18:08,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-25 18:18:08,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-25 18:18:08,305 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 18:18:08,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-25 18:18:08,310 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-11-25 18:18:08,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:18:08,311 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-25 18:18:08,313 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 18:18:08,313 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-25 18:18:08,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 18:18:08,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:18:08,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:18:08,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:18:08,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:18:08,538 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:18:08,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:18:08,540 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-11-25 18:18:08,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:18:08,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845317937] [2021-11-25 18:18:08,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:18:08,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:18:08,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:18:08,542 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:18:08,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a97f822-8bde-4746-ab6a-6ae59867af97/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process