./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 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/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_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 22:22:04,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:22:04,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:22:04,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:22:04,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:22:04,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:22:04,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:22:04,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:22:04,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:22:04,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:22:04,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:22:04,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:22:04,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:22:04,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:22:04,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:22:04,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:22:04,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:22:04,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:22:04,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:22:04,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:22:04,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:22:04,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:22:04,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:22:04,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:22:04,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:22:04,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:22:04,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:22:04,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:22:04,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:22:04,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:22:04,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:22:04,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:22:04,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:22:04,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:22:04,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:22:04,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:22:04,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:22:04,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:22:04,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:22:04,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:22:04,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:22:04,881 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 22:22:04,926 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:22:04,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:22:04,927 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:22:04,927 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:22:04,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:22:04,928 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:22:04,928 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:22:04,928 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:22:04,928 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:22:04,928 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:22:04,929 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:22:04,929 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:22:04,929 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:22:04,929 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:22:04,929 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:22:04,929 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:22:04,930 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:22:04,930 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:22:04,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:22:04,934 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:22:04,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:22:04,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:22:04,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:22:04,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:22:04,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:22:04,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:22:04,936 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:22:04,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:22:04,937 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:22:04,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:22:04,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:22:04,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:22:04,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:22:04,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:22:04,938 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:22:04,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:22:04,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:22:04,940 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:22:04,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:22:04,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:22:04,940 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:22:04,941 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30996e3a95d093576f36103779b690855817d5b6444d2c5828f5d0db503b2e4f [2022-11-25 22:22:05,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:22:05,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:22:05,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:22:05,260 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:22:05,261 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:22:05,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/combinations/gcd_4+newton_1_8.i [2022-11-25 22:22:08,405 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:22:08,593 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:22:08,594 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i [2022-11-25 22:22:08,601 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/data/68fb07ce0/d380b98d8e5445e1adf9dae8bac7107d/FLAGfb2b95564 [2022-11-25 22:22:08,616 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/data/68fb07ce0/d380b98d8e5445e1adf9dae8bac7107d [2022-11-25 22:22:08,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:22:08,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:22:08,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:22:08,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:22:08,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:22:08,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:22:08" (1/1) ... [2022-11-25 22:22:08,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a0698de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:08, skipping insertion in model container [2022-11-25 22:22:08,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:22:08" (1/1) ... [2022-11-25 22:22:08,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:22:08,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:22:08,827 WARN L237 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_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[1224,1237] [2022-11-25 22:22:08,851 WARN L237 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_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[2806,2819] [2022-11-25 22:22:08,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:22:08,863 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:22:08,877 WARN L237 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_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[1224,1237] [2022-11-25 22:22:08,888 WARN L237 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_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[2806,2819] [2022-11-25 22:22:08,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:22:08,908 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:22:08,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:08 WrapperNode [2022-11-25 22:22:08,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:22:08,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:22:08,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:22:08,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:22:08,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:08" (1/1) ... [2022-11-25 22:22:08,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:08" (1/1) ... [2022-11-25 22:22:08,955 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 81 [2022-11-25 22:22:08,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:22:08,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:22:08,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:22:08,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:22:08,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:08" (1/1) ... [2022-11-25 22:22:08,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:08" (1/1) ... [2022-11-25 22:22:08,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:08" (1/1) ... [2022-11-25 22:22:08,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:08" (1/1) ... [2022-11-25 22:22:08,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:08" (1/1) ... [2022-11-25 22:22:08,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:08" (1/1) ... [2022-11-25 22:22:08,977 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:08" (1/1) ... [2022-11-25 22:22:08,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:08" (1/1) ... [2022-11-25 22:22:08,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:22:08,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:22:08,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:22:08,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:22:08,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:08" (1/1) ... [2022-11-25 22:22:08,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:22:08,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:22:09,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:22:09,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:22:09,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:22:09,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:22:09,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:22:09,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:22:09,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 22:22:09,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 22:22:09,145 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:22:09,147 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:22:09,347 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:22:09,443 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:22:09,443 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 22:22:09,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:22:09 BoogieIcfgContainer [2022-11-25 22:22:09,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:22:09,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:22:09,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:22:09,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:22:09,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:22:08" (1/3) ... [2022-11-25 22:22:09,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d67a80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:22:09, skipping insertion in model container [2022-11-25 22:22:09,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:08" (2/3) ... [2022-11-25 22:22:09,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d67a80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:22:09, skipping insertion in model container [2022-11-25 22:22:09,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:22:09" (3/3) ... [2022-11-25 22:22:09,464 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_8.i [2022-11-25 22:22:09,483 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:22:09,483 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 22:22:09,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:22:09,534 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5cfbe03f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:22:09,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 22:22:09,539 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) [2022-11-25 22:22:09,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 22:22:09,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:22:09,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 22:22:09,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:22:09,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:22:09,554 INFO L85 PathProgramCache]: Analyzing trace with hash 3948908, now seen corresponding path program 1 times [2022-11-25 22:22:09,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:22:09,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880799861] [2022-11-25 22:22:09,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:22:09,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:22:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:22:09,665 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 22:22:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:22:09,700 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 22:22:09,702 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 22:22:09,704 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-25 22:22:09,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-25 22:22:09,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:22:09,712 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 22:22:09,717 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 22:22:09,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 10:22:09 BoogieIcfgContainer [2022-11-25 22:22:09,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 22:22:09,746 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 22:22:09,746 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 22:22:09,746 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 22:22:09,747 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:22:09" (3/4) ... [2022-11-25 22:22:09,750 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 22:22:09,750 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 22:22:09,751 INFO L158 Benchmark]: Toolchain (without parser) took 1125.48ms. Allocated memory was 148.9MB in the beginning and 199.2MB in the end (delta: 50.3MB). Free memory was 103.0MB in the beginning and 153.0MB in the end (delta: -50.0MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. [2022-11-25 22:22:09,752 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 104.9MB. Free memory is still 52.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:22:09,752 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.16ms. Allocated memory is still 148.9MB. Free memory was 102.6MB in the beginning and 91.3MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 22:22:09,753 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.19ms. Allocated memory is still 148.9MB. Free memory was 91.3MB in the beginning and 89.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:22:09,754 INFO L158 Benchmark]: Boogie Preprocessor took 24.51ms. Allocated memory is still 148.9MB. Free memory was 89.3MB in the beginning and 88.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:22:09,754 INFO L158 Benchmark]: RCFGBuilder took 464.73ms. Allocated memory was 148.9MB in the beginning and 199.2MB in the end (delta: 50.3MB). Free memory was 88.0MB in the beginning and 168.6MB in the end (delta: -80.6MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2022-11-25 22:22:09,755 INFO L158 Benchmark]: TraceAbstraction took 296.38ms. Allocated memory is still 199.2MB. Free memory was 167.6MB in the beginning and 154.0MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 22:22:09,755 INFO L158 Benchmark]: Witness Printer took 4.45ms. Allocated memory is still 199.2MB. Free memory is still 153.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:22:09,759 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 104.9MB. Free memory is still 52.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.16ms. Allocated memory is still 148.9MB. Free memory was 102.6MB in the beginning and 91.3MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.19ms. Allocated memory is still 148.9MB. Free memory was 91.3MB in the beginning and 89.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.51ms. Allocated memory is still 148.9MB. Free memory was 89.3MB in the beginning and 88.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 464.73ms. Allocated memory was 148.9MB in the beginning and 199.2MB in the end (delta: 50.3MB). Free memory was 88.0MB in the beginning and 168.6MB in the end (delta: -80.6MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. * TraceAbstraction took 296.38ms. Allocated memory is still 199.2MB. Free memory was 167.6MB in the beginning and 154.0MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 4.45ms. Allocated memory is still 199.2MB. Free memory is still 153.0MB. 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=109] [L109] reach_error() VAL [IN=109] - 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, 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 [2022-11-25 22:22:09,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/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_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 22:22:12,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:22:12,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:22:12,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:22:12,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:22:12,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:22:12,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:22:12,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:22:12,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:22:12,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:22:12,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:22:12,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:22:12,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:22:12,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:22:12,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:22:12,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:22:12,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:22:12,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:22:12,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:22:12,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:22:12,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:22:12,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:22:12,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:22:12,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:22:12,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:22:12,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:22:12,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:22:12,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:22:12,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:22:12,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:22:12,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:22:12,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:22:12,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:22:12,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:22:12,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:22:12,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:22:12,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:22:12,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:22:12,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:22:12,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:22:12,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:22:12,334 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-25 22:22:12,377 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:22:12,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:22:12,378 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:22:12,378 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:22:12,379 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:22:12,380 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:22:12,380 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:22:12,380 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:22:12,380 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:22:12,380 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:22:12,381 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:22:12,382 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:22:12,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:22:12,383 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:22:12,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:22:12,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:22:12,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:22:12,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:22:12,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:22:12,384 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 22:22:12,384 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 22:22:12,384 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 22:22:12,384 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:22:12,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:22:12,385 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:22:12,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:22:12,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:22:12,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 22:22:12,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:22:12,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:22:12,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:22:12,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:22:12,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:22:12,387 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 22:22:12,387 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 22:22:12,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:22:12,388 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:22:12,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 22:22:12,388 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_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30996e3a95d093576f36103779b690855817d5b6444d2c5828f5d0db503b2e4f [2022-11-25 22:22:12,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:22:12,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:22:12,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:22:12,822 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:22:12,822 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:22:12,824 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/combinations/gcd_4+newton_1_8.i [2022-11-25 22:22:15,949 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:22:16,203 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:22:16,204 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i [2022-11-25 22:22:16,214 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/data/25cd00ca2/7dffcedcc2344bd2844a89c7b77cf0b8/FLAGca8890d3c [2022-11-25 22:22:16,235 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/data/25cd00ca2/7dffcedcc2344bd2844a89c7b77cf0b8 [2022-11-25 22:22:16,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:22:16,243 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:22:16,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:22:16,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:22:16,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:22:16,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:22:16" (1/1) ... [2022-11-25 22:22:16,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f1f58da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:16, skipping insertion in model container [2022-11-25 22:22:16,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:22:16" (1/1) ... [2022-11-25 22:22:16,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:22:16,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:22:16,523 WARN L237 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_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[1224,1237] [2022-11-25 22:22:16,572 WARN L237 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_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[2806,2819] [2022-11-25 22:22:16,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:22:16,597 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:22:16,619 WARN L237 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_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[1224,1237] [2022-11-25 22:22:16,646 WARN L237 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_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i[2806,2819] [2022-11-25 22:22:16,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:22:16,663 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:22:16,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:16 WrapperNode [2022-11-25 22:22:16,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:22:16,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:22:16,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:22:16,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:22:16,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:16" (1/1) ... [2022-11-25 22:22:16,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:16" (1/1) ... [2022-11-25 22:22:16,733 INFO L138 Inliner]: procedures = 28, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 78 [2022-11-25 22:22:16,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:22:16,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:22:16,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:22:16,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:22:16,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:16" (1/1) ... [2022-11-25 22:22:16,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:16" (1/1) ... [2022-11-25 22:22:16,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:16" (1/1) ... [2022-11-25 22:22:16,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:16" (1/1) ... [2022-11-25 22:22:16,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:16" (1/1) ... [2022-11-25 22:22:16,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:16" (1/1) ... [2022-11-25 22:22:16,780 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:16" (1/1) ... [2022-11-25 22:22:16,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:16" (1/1) ... [2022-11-25 22:22:16,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:22:16,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:22:16,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:22:16,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:22:16,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:16" (1/1) ... [2022-11-25 22:22:16,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:22:16,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:22:16,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:22:16,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:22:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:22:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 22:22:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:22:16,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:22:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 22:22:16,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 22:22:16,972 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:22:16,974 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:22:23,977 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:22:23,984 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:22:23,985 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 22:22:23,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:22:23 BoogieIcfgContainer [2022-11-25 22:22:23,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:22:23,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:22:23,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:22:23,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:22:23,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:22:16" (1/3) ... [2022-11-25 22:22:23,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4631f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:22:23, skipping insertion in model container [2022-11-25 22:22:23,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:16" (2/3) ... [2022-11-25 22:22:23,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4631f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:22:23, skipping insertion in model container [2022-11-25 22:22:23,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:22:23" (3/3) ... [2022-11-25 22:22:23,998 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_8.i [2022-11-25 22:22:24,019 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:22:24,019 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 22:22:24,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:22:24,078 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5c8e1736, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:22:24,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 22:22:24,083 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) [2022-11-25 22:22:24,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 22:22:24,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:22:24,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:22:24,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:22:24,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:22:24,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2022-11-25 22:22:24,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:22:24,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114590992] [2022-11-25 22:22:24,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:22:24,113 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:22:24,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:22:24,119 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:22:24,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 22:22:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:22:25,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 22:22:25,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:22:25,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:22:25,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:22:25,708 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:22:25,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114590992] [2022-11-25 22:22:25,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114590992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:22:25,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:22:25,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:22:25,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497136084] [2022-11-25 22:22:25,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:22:25,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 22:22:25,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:22:25,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 22:22:25,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:22:25,749 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) [2022-11-25 22:22:25,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:22:25,775 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2022-11-25 22:22:25,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 22:22:25,778 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 [2022-11-25 22:22:25,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:22:25,784 INFO L225 Difference]: With dead ends: 57 [2022-11-25 22:22:25,784 INFO L226 Difference]: Without dead ends: 26 [2022-11-25 22:22:25,787 INFO L412 NwaCegarLoop]: 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 [2022-11-25 22:22:25,793 INFO L413 NwaCegarLoop]: 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 [2022-11-25 22:22:25,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:22:25,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-25 22:22:25,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-25 22:22:25,835 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) [2022-11-25 22:22:25,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-11-25 22:22:25,839 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2022-11-25 22:22:25,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:22:25,840 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-11-25 22:22:25,840 INFO L496 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) [2022-11-25 22:22:25,840 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-11-25 22:22:25,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 22:22:25,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:22:25,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:22:25,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 22:22:26,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:22:26,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:22:26,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:22:26,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2022-11-25 22:22:26,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:22:26,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110480091] [2022-11-25 22:22:26,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:22:26,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:22:26,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:22:26,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:22:26,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 22:22:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:22:30,862 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 22:22:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:22:35,353 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-25 22:22:35,353 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 22:22:35,354 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-25 22:22:35,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-25 22:22:35,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 22:22:35,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:22:35,560 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 22:22:35,564 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 22:22:35,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 10:22:35 BoogieIcfgContainer [2022-11-25 22:22:35,590 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 22:22:35,590 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 22:22:35,591 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 22:22:35,591 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 22:22:35,591 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:22:23" (3/4) ... [2022-11-25 22:22:35,594 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-25 22:22:35,651 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 22:22:35,651 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 22:22:35,654 INFO L158 Benchmark]: Toolchain (without parser) took 19411.14ms. Allocated memory is still 94.4MB. Free memory was 73.2MB in the beginning and 43.3MB in the end (delta: 29.9MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. [2022-11-25 22:22:35,654 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 62.9MB. Free memory was 41.1MB in the beginning and 41.1MB in the end (delta: 44.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:22:35,655 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.27ms. Allocated memory is still 94.4MB. Free memory was 73.0MB in the beginning and 60.8MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 22:22:35,656 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.57ms. Allocated memory is still 94.4MB. Free memory was 60.8MB in the beginning and 59.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:22:35,657 INFO L158 Benchmark]: Boogie Preprocessor took 49.17ms. Allocated memory is still 94.4MB. Free memory was 59.0MB in the beginning and 57.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:22:35,658 INFO L158 Benchmark]: RCFGBuilder took 7202.44ms. Allocated memory is still 94.4MB. Free memory was 57.3MB in the beginning and 71.8MB in the end (delta: -14.5MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2022-11-25 22:22:35,664 INFO L158 Benchmark]: TraceAbstraction took 11600.23ms. Allocated memory is still 94.4MB. Free memory was 71.0MB in the beginning and 44.9MB in the end (delta: 26.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-25 22:22:35,665 INFO L158 Benchmark]: Witness Printer took 62.90ms. Allocated memory is still 94.4MB. Free memory was 44.9MB in the beginning and 43.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:22:35,669 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 62.9MB. Free memory was 41.1MB in the beginning and 41.1MB in the end (delta: 44.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 413.27ms. Allocated memory is still 94.4MB. Free memory was 73.0MB in the beginning and 60.8MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.57ms. Allocated memory is still 94.4MB. Free memory was 60.8MB in the beginning and 59.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.17ms. Allocated memory is still 94.4MB. Free memory was 59.0MB in the beginning and 57.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 7202.44ms. Allocated memory is still 94.4MB. Free memory was 57.3MB in the beginning and 71.8MB in the end (delta: -14.5MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * TraceAbstraction took 11600.23ms. Allocated memory is still 94.4MB. Free memory was 71.0MB in the beginning and 44.9MB in the end (delta: 26.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 62.90ms. Allocated memory is still 94.4MB. Free memory was 44.9MB in the beginning and 43.3MB in the end (delta: 1.6MB). 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 - 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)=-0.999997079372406, \result=-0.8418635129928589, x=-0.999997079372406] [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-0.999997079372406, \result=0.5430579781532288, x=-0.999997079372406] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=-0.999997079372406, x=0.5502305626869202] [L109] reach_error() VAL [IN=-0.999997079372406, x=0.5502305626869202] - 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: 11.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 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, 6.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 38 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! [2022-11-25 22:22:35,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ed2ea-6a7a-43c1-b9c6-8e54ee06d22f/bin/utaipan-ByfvJB40ur/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