./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_4+newton_1_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/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_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/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_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/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 30996e3a95d093576f36103779b690855817d5b6444d2c5828f5d0db503b2e4f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:50:10,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:50:10,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:50:10,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:50:10,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:50:10,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:50:10,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:50:10,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:50:10,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:50:10,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:50:10,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:50:10,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:50:10,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:50:10,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:50:10,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:50:10,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:50:10,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:50:10,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:50:10,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:50:10,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:50:10,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:50:10,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:50:10,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:50:10,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:50:10,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:50:10,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:50:10,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:50:10,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:50:10,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:50:10,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:50:10,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:50:10,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:50:10,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:50:10,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:50:10,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:50:10,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:50:10,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:50:10,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:50:10,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:50:10,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:50:10,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:50:10,929 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 17:50:10,953 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:50:10,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:50:10,953 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:50:10,954 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:50:10,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:50:10,955 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:50:10,955 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:50:10,955 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:50:10,956 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:50:10,956 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:50:10,956 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:50:10,957 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:50:10,957 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:50:10,957 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:50:10,957 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:50:10,958 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:50:10,958 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:50:10,958 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:50:10,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:50:10,959 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 17:50:10,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:50:10,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 17:50:10,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:50:10,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:50:10,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:50:10,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:50:10,961 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 17:50:10,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:50:10,962 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:50:10,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:50:10,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:50:10,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:50:10,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:50:10,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:50:10,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:50:10,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:50:10,964 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:50:10,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:50:10,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:50:10,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:50:10,965 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:50:10,965 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_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30996e3a95d093576f36103779b690855817d5b6444d2c5828f5d0db503b2e4f [2021-11-25 17:50:11,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:50:11,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:50:11,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:50:11,282 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:50:11,283 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:50:11,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/gcd_4+newton_1_8.i [2021-11-25 17:50:11,353 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/data/49d0b3434/c64a983221254c4cbd63345ceb9d40fa/FLAG6391003b9 [2021-11-25 17:50:11,878 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:50:11,882 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i [2021-11-25 17:50:11,895 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/data/49d0b3434/c64a983221254c4cbd63345ceb9d40fa/FLAG6391003b9 [2021-11-25 17:50:12,240 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/data/49d0b3434/c64a983221254c4cbd63345ceb9d40fa [2021-11-25 17:50:12,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:50:12,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:50:12,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:50:12,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:50:12,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:50:12,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:50:12" (1/1) ... [2021-11-25 17:50:12,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d1b999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:12, skipping insertion in model container [2021-11-25 17:50:12,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:50:12" (1/1) ... [2021-11-25 17:50:12,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:50:12,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:50:12,468 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_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[1224,1237] [2021-11-25 17:50:12,509 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_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[2806,2819] [2021-11-25 17:50:12,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:50:12,519 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:50:12,531 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_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[1224,1237] [2021-11-25 17:50:12,541 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_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[2806,2819] [2021-11-25 17:50:12,543 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:50:12,557 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:50:12,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:12 WrapperNode [2021-11-25 17:50:12,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:50:12,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:50:12,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:50:12,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:50:12,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:12" (1/1) ... [2021-11-25 17:50:12,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:12" (1/1) ... [2021-11-25 17:50:12,596 INFO L137 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 73 [2021-11-25 17:50:12,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:50:12,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:50:12,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:50:12,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:50:12,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:12" (1/1) ... [2021-11-25 17:50:12,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:12" (1/1) ... [2021-11-25 17:50:12,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:12" (1/1) ... [2021-11-25 17:50:12,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:12" (1/1) ... [2021-11-25 17:50:12,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:12" (1/1) ... [2021-11-25 17:50:12,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:12" (1/1) ... [2021-11-25 17:50:12,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:12" (1/1) ... [2021-11-25 17:50:12,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:50:12,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:50:12,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:50:12,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:50:12,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:12" (1/1) ... [2021-11-25 17:50:12,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:50:12,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:50:12,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:50:12,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:50:12,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:50:12,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 17:50:12,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:50:12,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:50:12,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 17:50:12,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 17:50:12,813 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:50:12,815 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:50:12,987 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:50:13,054 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:50:13,055 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 17:50:13,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:50:13 BoogieIcfgContainer [2021-11-25 17:50:13,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:50:13,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:50:13,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:50:13,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:50:13,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:50:12" (1/3) ... [2021-11-25 17:50:13,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58bf055f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:50:13, skipping insertion in model container [2021-11-25 17:50:13,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:12" (2/3) ... [2021-11-25 17:50:13,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58bf055f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:50:13, skipping insertion in model container [2021-11-25 17:50:13,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:50:13" (3/3) ... [2021-11-25 17:50:13,077 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_8.i [2021-11-25 17:50:13,098 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:50:13,098 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 17:50:13,149 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:50:13,155 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 17:50:13,155 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 17:50:13,174 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 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) [2021-11-25 17:50:13,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 17:50:13,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:13,179 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 17:50:13,183 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:50:13,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:13,198 INFO L85 PathProgramCache]: Analyzing trace with hash 3948908, now seen corresponding path program 1 times [2021-11-25 17:50:13,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:13,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026659041] [2021-11-25 17:50:13,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:13,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:50:13,353 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 17:50:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:50:13,385 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 17:50:13,387 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 17:50:13,388 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 17:50:13,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 17:50:13,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:50:13,396 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-25 17:50:13,399 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 17:50:13,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:50:13 BoogieIcfgContainer [2021-11-25 17:50:13,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 17:50:13,420 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 17:50:13,420 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 17:50:13,420 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 17:50:13,421 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:50:13" (3/4) ... [2021-11-25 17:50:13,424 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 17:50:13,425 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 17:50:13,426 INFO L158 Benchmark]: Toolchain (without parser) took 1181.29ms. Allocated memory is still 100.7MB. Free memory was 62.7MB in the beginning and 47.5MB in the end (delta: 15.2MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2021-11-25 17:50:13,426 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 100.7MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:50:13,427 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.85ms. Allocated memory is still 100.7MB. Free memory was 62.4MB in the beginning and 76.9MB in the end (delta: -14.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 17:50:13,428 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.30ms. Allocated memory is still 100.7MB. Free memory was 76.9MB in the beginning and 75.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 17:50:13,428 INFO L158 Benchmark]: Boogie Preprocessor took 28.63ms. Allocated memory is still 100.7MB. Free memory was 75.1MB in the beginning and 73.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:50:13,429 INFO L158 Benchmark]: RCFGBuilder took 439.65ms. Allocated memory is still 100.7MB. Free memory was 73.8MB in the beginning and 60.9MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 17:50:13,430 INFO L158 Benchmark]: TraceAbstraction took 351.28ms. Allocated memory is still 100.7MB. Free memory was 60.7MB in the beginning and 47.8MB in the end (delta: 12.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-25 17:50:13,430 INFO L158 Benchmark]: Witness Printer took 4.64ms. Allocated memory is still 100.7MB. Free memory was 47.8MB in the beginning and 47.5MB in the end (delta: 308.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:50:13,434 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 100.7MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 311.85ms. Allocated memory is still 100.7MB. Free memory was 62.4MB in the beginning and 76.9MB in the end (delta: -14.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.30ms. Allocated memory is still 100.7MB. Free memory was 76.9MB in the beginning and 75.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.63ms. Allocated memory is still 100.7MB. Free memory was 75.1MB in the beginning and 73.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 439.65ms. Allocated memory is still 100.7MB. Free memory was 73.8MB in the beginning and 60.9MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 351.28ms. Allocated memory is still 100.7MB. Free memory was 60.7MB in the beginning and 47.8MB in the end (delta: 12.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 4.64ms. Allocated memory is still 100.7MB. Free memory was 47.8MB in the beginning and 47.5MB in the end (delta: 308.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 109]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 87. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L82] COND FALSE !(!cond) [L98] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [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; [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; [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=49] [L109] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-25 17:50:13,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/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_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/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_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/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_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/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 30996e3a95d093576f36103779b690855817d5b6444d2c5828f5d0db503b2e4f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:50:15,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:50:15,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:50:15,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:50:15,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:50:15,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:50:15,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:50:15,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:50:15,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:50:15,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:50:15,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:50:15,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:50:15,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:50:15,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:50:15,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:50:15,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:50:15,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:50:15,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:50:15,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:50:15,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:50:15,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:50:15,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:50:15,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:50:15,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:50:15,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:50:15,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:50:15,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:50:15,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:50:15,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:50:15,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:50:15,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:50:15,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:50:15,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:50:15,982 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:50:15,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:50:15,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:50:15,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:50:15,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:50:15,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:50:15,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:50:15,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:50:15,988 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 17:50:16,018 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:50:16,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:50:16,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:50:16,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:50:16,022 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:50:16,023 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:50:16,023 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:50:16,023 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:50:16,023 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:50:16,023 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:50:16,025 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:50:16,025 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:50:16,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:50:16,027 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 17:50:16,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 17:50:16,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:50:16,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:50:16,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:50:16,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:50:16,028 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 17:50:16,028 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 17:50:16,029 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 17:50:16,029 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 17:50:16,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:50:16,029 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:50:16,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:50:16,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:50:16,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 17:50:16,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:50:16,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:50:16,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:50:16,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:50:16,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:50:16,032 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 17:50:16,032 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 17:50:16,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:50:16,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:50:16,033 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:50:16,033 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_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30996e3a95d093576f36103779b690855817d5b6444d2c5828f5d0db503b2e4f [2021-11-25 17:50:16,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:50:16,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:50:16,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:50:16,449 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:50:16,450 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:50:16,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/gcd_4+newton_1_8.i [2021-11-25 17:50:16,528 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/data/fadd5c4cd/a1bad8ee3e4f42b2b5a132d100bb022e/FLAG3cc821458 [2021-11-25 17:50:17,064 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:50:17,065 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i [2021-11-25 17:50:17,077 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/data/fadd5c4cd/a1bad8ee3e4f42b2b5a132d100bb022e/FLAG3cc821458 [2021-11-25 17:50:17,503 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/data/fadd5c4cd/a1bad8ee3e4f42b2b5a132d100bb022e [2021-11-25 17:50:17,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:50:17,507 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:50:17,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:50:17,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:50:17,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:50:17,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:50:17" (1/1) ... [2021-11-25 17:50:17,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e806d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:17, skipping insertion in model container [2021-11-25 17:50:17,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:50:17" (1/1) ... [2021-11-25 17:50:17,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:50:17,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:50:17,676 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_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[1224,1237] [2021-11-25 17:50:17,701 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_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[2806,2819] [2021-11-25 17:50:17,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:50:17,713 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:50:17,726 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_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[1224,1237] [2021-11-25 17:50:17,738 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_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[2806,2819] [2021-11-25 17:50:17,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:50:17,754 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:50:17,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:17 WrapperNode [2021-11-25 17:50:17,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:50:17,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:50:17,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:50:17,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:50:17,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:17" (1/1) ... [2021-11-25 17:50:17,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:17" (1/1) ... [2021-11-25 17:50:17,796 INFO L137 Inliner]: procedures = 28, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 70 [2021-11-25 17:50:17,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:50:17,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:50:17,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:50:17,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:50:17,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:17" (1/1) ... [2021-11-25 17:50:17,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:17" (1/1) ... [2021-11-25 17:50:17,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:17" (1/1) ... [2021-11-25 17:50:17,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:17" (1/1) ... [2021-11-25 17:50:17,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:17" (1/1) ... [2021-11-25 17:50:17,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:17" (1/1) ... [2021-11-25 17:50:17,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:17" (1/1) ... [2021-11-25 17:50:17,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:50:17,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:50:17,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:50:17,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:50:17,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:17" (1/1) ... [2021-11-25 17:50:17,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:50:17,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:50:17,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:50:17,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:50:17,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:50:17,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 17:50:17,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:50:17,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:50:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 17:50:17,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 17:50:17,983 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:50:17,985 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:50:24,901 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:50:24,916 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:50:24,917 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 17:50:24,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:50:24 BoogieIcfgContainer [2021-11-25 17:50:24,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:50:24,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:50:24,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:50:24,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:50:24,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:50:17" (1/3) ... [2021-11-25 17:50:24,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a07745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:50:24, skipping insertion in model container [2021-11-25 17:50:24,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:17" (2/3) ... [2021-11-25 17:50:24,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a07745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:50:24, skipping insertion in model container [2021-11-25 17:50:24,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:50:24" (3/3) ... [2021-11-25 17:50:24,929 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_8.i [2021-11-25 17:50:24,934 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:50:24,935 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 17:50:24,992 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:50:24,998 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 17:50:24,998 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 17:50:25,014 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) [2021-11-25 17:50:25,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 17:50:25,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:25,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:50:25,020 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:50:25,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:25,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2021-11-25 17:50:25,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:50:25,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205753576] [2021-11-25 17:50:25,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:25,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:50:25,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:50:25,046 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:50:25,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 17:50:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:26,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 17:50:26,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:50:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:50:26,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:50:26,269 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:50:26,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205753576] [2021-11-25 17:50:26,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205753576] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:26,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:26,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 17:50:26,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199062484] [2021-11-25 17:50:26,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:26,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 17:50:26,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:50:26,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 17:50:26,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 17:50:26,317 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) [2021-11-25 17:50:26,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:26,345 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2021-11-25 17:50:26,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 17:50:26,347 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-25 17:50:26,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:26,355 INFO L225 Difference]: With dead ends: 57 [2021-11-25 17:50:26,355 INFO L226 Difference]: Without dead ends: 26 [2021-11-25 17:50:26,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 17:50:26,366 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 [2021-11-25 17:50:26,368 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] [2021-11-25 17:50:26,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-25 17:50:26,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-25 17:50:26,399 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) [2021-11-25 17:50:26,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-11-25 17:50:26,402 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2021-11-25 17:50:26,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:26,403 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-11-25 17:50:26,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:26,403 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-11-25 17:50:26,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 17:50:26,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:26,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:50:26,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 17:50:26,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:50:26,616 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:50:26,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:26,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2021-11-25 17:50:26,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:50:26,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316212526] [2021-11-25 17:50:26,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:26,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:50:26,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:50:26,629 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:50:26,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 17:50:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:50:29,886 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 17:50:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:50:48,535 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-25 17:50:48,536 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 17:50:48,537 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 17:50:48,539 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 17:50:48,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 17:50:48,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:50:48,743 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-25 17:50:48,746 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 17:50:48,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:50:48 BoogieIcfgContainer [2021-11-25 17:50:48,772 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 17:50:48,772 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 17:50:48,772 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 17:50:48,773 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 17:50:48,773 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:50:24" (3/4) ... [2021-11-25 17:50:48,775 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 17:50:48,833 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 17:50:48,835 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 17:50:48,836 INFO L158 Benchmark]: Toolchain (without parser) took 31329.14ms. Allocated memory was 75.5MB in the beginning and 94.4MB in the end (delta: 18.9MB). Free memory was 59.1MB in the beginning and 70.2MB in the end (delta: -11.1MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2021-11-25 17:50:48,837 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 75.5MB. Free memory is still 57.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:50:48,838 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.31ms. Allocated memory is still 75.5MB. Free memory was 58.9MB in the beginning and 47.2MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 17:50:48,838 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.44ms. Allocated memory is still 75.5MB. Free memory was 47.2MB in the beginning and 45.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 17:50:48,839 INFO L158 Benchmark]: Boogie Preprocessor took 28.89ms. Allocated memory is still 75.5MB. Free memory was 45.3MB in the beginning and 43.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 17:50:48,839 INFO L158 Benchmark]: RCFGBuilder took 7092.56ms. Allocated memory is still 75.5MB. Free memory was 43.9MB in the beginning and 54.3MB in the end (delta: -10.3MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2021-11-25 17:50:48,840 INFO L158 Benchmark]: TraceAbstraction took 23851.09ms. Allocated memory was 75.5MB in the beginning and 94.4MB in the end (delta: 18.9MB). Free memory was 53.7MB in the beginning and 72.3MB in the end (delta: -18.5MB). Peak memory consumption was 1.3MB. Max. memory is 16.1GB. [2021-11-25 17:50:48,847 INFO L158 Benchmark]: Witness Printer took 62.80ms. Allocated memory is still 94.4MB. Free memory was 72.3MB in the beginning and 70.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 17:50:48,851 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 75.5MB. Free memory is still 57.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.31ms. Allocated memory is still 75.5MB. Free memory was 58.9MB in the beginning and 47.2MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.44ms. Allocated memory is still 75.5MB. Free memory was 47.2MB in the beginning and 45.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.89ms. Allocated memory is still 75.5MB. Free memory was 45.3MB in the beginning and 43.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 7092.56ms. Allocated memory is still 75.5MB. Free memory was 43.9MB in the beginning and 54.3MB in the end (delta: -10.3MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * TraceAbstraction took 23851.09ms. Allocated memory was 75.5MB in the beginning and 94.4MB in the end (delta: 18.9MB). Free memory was 53.7MB in the beginning and 72.3MB in the end (delta: -18.5MB). Peak memory consumption was 1.3MB. Max. memory is 16.1GB. * Witness Printer took 62.80ms. Allocated memory is still 94.4MB. Free memory was 72.3MB in the beginning and 70.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 109]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [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)=-1.6128488779067993, \result=-1.0101827383041382, x=-1.6128488779067993] [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)=-1.6128488779067993, \result=0.005750883370637894, x=-1.6128488779067993] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=-1.6128488779067993, x=174.0441131591797] [L109] reach_error() VAL [IN=-1.6128488779067993, x=174.0441131591797] - 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: 23.8s, 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, 4.3s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-25 17:50:48,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae82f4d-3032-4f6a-8e1b-979aa77da7b3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE