./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_2+newton_3_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_3_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS --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 803cbc2ab2fb54f2ccf794a1cf55b1df2243f22f996d0e59d0f49967facf7958 --- 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-8393723 [2022-11-19 07:30:41,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:30:41,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:30:41,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:30:41,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:30:41,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:30:41,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:30:41,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:30:41,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:30:41,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:30:41,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:30:41,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:30:41,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:30:41,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:30:41,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:30:41,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:30:41,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:30:41,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:30:41,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:30:41,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:30:41,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:30:41,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:30:41,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:30:41,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:30:41,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:30:41,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:30:41,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:30:41,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:30:41,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:30:41,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:30:41,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:30:41,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:30:41,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:30:41,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:30:41,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:30:41,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:30:41,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:30:41,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:30:41,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:30:41,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:30:41,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:30:41,930 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:30:41,971 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:30:41,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:30:41,972 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:30:41,972 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:30:41,972 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:30:41,973 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:30:41,973 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:30:41,973 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:30:41,973 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:30:41,973 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:30:41,973 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:30:41,974 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:30:41,974 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:30:41,974 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:30:41,974 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:30:41,974 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:30:41,975 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:30:41,975 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:30:41,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:30:41,976 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:30:41,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:30:41,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:30:41,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:30:41,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:30:41,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:30:41,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:30:41,977 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:30:41,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:30:41,978 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:30:41,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:30:41,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:30:41,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:30:41,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:30:41,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:30:41,979 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:30:41,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:30:41,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:30:41,980 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:30:41,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:30:41,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:30:41,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:30:41,981 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_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 803cbc2ab2fb54f2ccf794a1cf55b1df2243f22f996d0e59d0f49967facf7958 [2022-11-19 07:30:42,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:30:42,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:30:42,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:30:42,249 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:30:42,249 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:30:42,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/combinations/gcd_2+newton_3_7.i [2022-11-19 07:30:42,333 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/data/3d562fe1b/42e3e3b66ffd4d83a4d153a8493b454c/FLAGeb6494e4b [2022-11-19 07:30:42,790 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:30:42,791 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i [2022-11-19 07:30:42,802 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/data/3d562fe1b/42e3e3b66ffd4d83a4d153a8493b454c/FLAGeb6494e4b [2022-11-19 07:30:43,171 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/data/3d562fe1b/42e3e3b66ffd4d83a4d153a8493b454c [2022-11-19 07:30:43,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:30:43,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:30:43,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:30:43,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:30:43,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:30:43,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:30:43" (1/1) ... [2022-11-19 07:30:43,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3295923d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:43, skipping insertion in model container [2022-11-19 07:30:43,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:30:43" (1/1) ... [2022-11-19 07:30:43,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:30:43,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:30:43,471 WARN L234 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_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[1226,1239] [2022-11-19 07:30:43,518 WARN L234 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_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[2862,2875] [2022-11-19 07:30:43,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:30:43,540 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:30:43,562 WARN L234 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_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[1226,1239] [2022-11-19 07:30:43,587 WARN L234 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_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[2862,2875] [2022-11-19 07:30:43,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:30:43,607 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:30:43,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:43 WrapperNode [2022-11-19 07:30:43,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:30:43,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:30:43,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:30:43,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:30:43,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:43" (1/1) ... [2022-11-19 07:30:43,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:43" (1/1) ... [2022-11-19 07:30:43,662 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 90 [2022-11-19 07:30:43,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:30:43,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:30:43,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:30:43,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:30:43,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:43" (1/1) ... [2022-11-19 07:30:43,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:43" (1/1) ... [2022-11-19 07:30:43,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:43" (1/1) ... [2022-11-19 07:30:43,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:43" (1/1) ... [2022-11-19 07:30:43,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:43" (1/1) ... [2022-11-19 07:30:43,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:43" (1/1) ... [2022-11-19 07:30:43,686 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:43" (1/1) ... [2022-11-19 07:30:43,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:43" (1/1) ... [2022-11-19 07:30:43,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:30:43,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:30:43,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:30:43,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:30:43,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:43" (1/1) ... [2022-11-19 07:30:43,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:30:43,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:30:43,727 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:30:43,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:30:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:30:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-19 07:30:43,768 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-19 07:30:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-19 07:30:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-19 07:30:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:30:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:30:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:30:43,840 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:30:43,843 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:30:44,041 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:30:44,227 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:30:44,230 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:30:44,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:30:44 BoogieIcfgContainer [2022-11-19 07:30:44,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:30:44,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:30:44,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:30:44,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:30:44,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:30:43" (1/3) ... [2022-11-19 07:30:44,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5857671b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:30:44, skipping insertion in model container [2022-11-19 07:30:44,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:43" (2/3) ... [2022-11-19 07:30:44,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5857671b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:30:44, skipping insertion in model container [2022-11-19 07:30:44,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:30:44" (3/3) ... [2022-11-19 07:30:44,256 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_7.i [2022-11-19 07:30:44,285 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:30:44,285 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 07:30:44,355 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:30:44,363 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;@79f1a011, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:30:44,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 07:30:44,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 07:30:44,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:30:44,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:30:44,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 07:30:44,382 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:30:44,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:30:44,395 INFO L85 PathProgramCache]: Analyzing trace with hash -291944571, now seen corresponding path program 1 times [2022-11-19 07:30:44,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:30:44,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613477216] [2022-11-19 07:30:44,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:44,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:30:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:30:44,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:30:44,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:30:44,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613477216] [2022-11-19 07:30:44,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613477216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:30:44,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:30:44,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:30:44,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192559430] [2022-11-19 07:30:44,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:30:44,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:30:44,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:30:44,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:30:44,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:30:44,977 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-19 07:30:45,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:30:45,059 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2022-11-19 07:30:45,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:30:45,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2022-11-19 07:30:45,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:30:45,068 INFO L225 Difference]: With dead ends: 41 [2022-11-19 07:30:45,068 INFO L226 Difference]: Without dead ends: 24 [2022-11-19 07:30:45,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:30:45,078 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:30:45,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 67 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:30:45,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-19 07:30:45,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-19 07:30:45,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 07:30:45,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-19 07:30:45,128 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 6 [2022-11-19 07:30:45,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:30:45,128 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-19 07:30:45,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-19 07:30:45,129 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-19 07:30:45,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:30:45,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:30:45,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:30:45,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:30:45,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:30:45,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:30:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash -533010262, now seen corresponding path program 1 times [2022-11-19 07:30:45,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:30:45,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494223323] [2022-11-19 07:30:45,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:45,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:30:45,153 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:30:45,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [139284585] [2022-11-19 07:30:45,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:45,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:30:45,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:30:45,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:30:45,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:30:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:30:45,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 07:30:45,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:30:45,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:30:45,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:30:45,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:30:45,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:30:45,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494223323] [2022-11-19 07:30:45,932 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:30:45,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139284585] [2022-11-19 07:30:45,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139284585] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:30:45,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [43236829] [2022-11-19 07:30:45,963 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-19 07:30:45,964 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:30:45,968 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:30:45,977 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:30:45,977 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:30:46,256 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:30:46,684 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '173#(and (= |ULTIMATE.start_gcd_test_~b#1| 0) (<= 0 (+ |ULTIMATE.start_gcd_test_#in~b#1| 128)) (<= |ULTIMATE.start_gcd_test_#in~a#1| 127) (<= |ULTIMATE.start_main1_~x~0#1| 127) (<= |ULTIMATE.start_gcd_test_#in~b#1| 127) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (< 0 |ULTIMATE.start_main1_~y~0#1|) (<= 0 (+ |ULTIMATE.start_gcd_test_#in~a#1| 128)) (= (ite (<= |ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_main1_~y~0#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 (+ |ULTIMATE.start_main1_~x~0#1| 128)) (<= |ULTIMATE.start_gcd_test_#res#1| 127) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_gcd_test_#res#1|) (= |ULTIMATE.start_gcd_test_~a#1| |ULTIMATE.start_gcd_test_#res#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:30:46,684 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:30:46,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:30:46,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-19 07:30:46,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832823362] [2022-11-19 07:30:46,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:30:46,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 07:30:46,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:30:46,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 07:30:46,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:30:46,688 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2022-11-19 07:30:46,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:30:46,969 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2022-11-19 07:30:46,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:30:46,970 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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 7 [2022-11-19 07:30:46,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:30:46,971 INFO L225 Difference]: With dead ends: 31 [2022-11-19 07:30:46,971 INFO L226 Difference]: Without dead ends: 26 [2022-11-19 07:30:46,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-11-19 07:30:46,973 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:30:46,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 148 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:30:46,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-19 07:30:46,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-19 07:30:46,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 07:30:46,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-11-19 07:30:46,980 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 7 [2022-11-19 07:30:46,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:30:46,980 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-11-19 07:30:46,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2022-11-19 07:30:46,981 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-11-19 07:30:46,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 07:30:46,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:30:46,981 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-19 07:30:46,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:30:47,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:30:47,187 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:30:47,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:30:47,187 INFO L85 PathProgramCache]: Analyzing trace with hash 847992842, now seen corresponding path program 2 times [2022-11-19 07:30:47,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:30:47,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241190650] [2022-11-19 07:30:47,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:47,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:30:47,208 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:30:47,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [358764135] [2022-11-19 07:30:47,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:30:47,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:30:47,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:30:47,217 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:30:47,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:30:47,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 07:30:47,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:30:47,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-19 07:30:47,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:31:08,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 139 [2022-11-19 07:31:08,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:31:08,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241190650] [2022-11-19 07:31:08,333 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:31:08,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358764135] [2022-11-19 07:31:08,333 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. [2022-11-19 07:31:08,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [310510662] [2022-11-19 07:31:08,336 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-19 07:31:08,336 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:31:08,336 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:31:08,336 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:31:08,337 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:31:08,340 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:314) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:273) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:221) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 44 more [2022-11-19 07:31:08,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:31:08,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2022-11-19 07:31:08,344 ERROR L170 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2022-11-19 07:31:08,344 INFO L359 BasicCegarLoop]: Counterexample might be feasible [2022-11-19 07:31:08,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-19 07:31:08,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-19 07:31:08,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:31:08,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-19 07:31:08,556 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1] [2022-11-19 07:31:08,559 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:31:08,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:31:08 BoogieIcfgContainer [2022-11-19 07:31:08,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:31:08,573 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:31:08,573 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:31:08,574 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:31:08,574 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:30:44" (3/4) ... [2022-11-19 07:31:08,579 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 07:31:08,579 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:31:08,581 INFO L158 Benchmark]: Toolchain (without parser) took 25404.83ms. Allocated memory was 134.2MB in the beginning and 205.5MB in the end (delta: 71.3MB). Free memory was 98.4MB in the beginning and 137.0MB in the end (delta: -38.6MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2022-11-19 07:31:08,581 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 134.2MB. Free memory is still 115.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:31:08,582 INFO L158 Benchmark]: CACSL2BoogieTranslator took 428.79ms. Allocated memory is still 134.2MB. Free memory was 98.2MB in the beginning and 108.7MB in the end (delta: -10.6MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2022-11-19 07:31:08,582 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.96ms. Allocated memory is still 134.2MB. Free memory was 108.7MB in the beginning and 106.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:31:08,582 INFO L158 Benchmark]: Boogie Preprocessor took 27.31ms. Allocated memory is still 134.2MB. Free memory was 106.6MB in the beginning and 105.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:31:08,583 INFO L158 Benchmark]: RCFGBuilder took 548.69ms. Allocated memory is still 134.2MB. Free memory was 105.1MB in the beginning and 89.3MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 07:31:08,584 INFO L158 Benchmark]: TraceAbstraction took 24330.82ms. Allocated memory was 134.2MB in the beginning and 205.5MB in the end (delta: 71.3MB). Free memory was 88.9MB in the beginning and 137.7MB in the end (delta: -48.8MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2022-11-19 07:31:08,584 INFO L158 Benchmark]: Witness Printer took 6.22ms. Allocated memory is still 205.5MB. Free memory is still 137.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:31:08,586 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 134.2MB. Free memory is still 115.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 428.79ms. Allocated memory is still 134.2MB. Free memory was 98.2MB in the beginning and 108.7MB in the end (delta: -10.6MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.96ms. Allocated memory is still 134.2MB. Free memory was 108.7MB in the beginning and 106.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.31ms. Allocated memory is still 134.2MB. Free memory was 106.6MB in the beginning and 105.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 548.69ms. Allocated memory is still 134.2MB. Free memory was 105.1MB in the beginning and 89.3MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 24330.82ms. Allocated memory was 134.2MB in the beginning and 205.5MB in the end (delta: 71.3MB). Free memory was 88.9MB in the beginning and 137.7MB in the end (delta: -48.8MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. * Witness Printer took 6.22ms. Allocated memory is still 205.5MB. Free memory is still 137.0MB. 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: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L108] COND TRUE __VERIFIER_nondet_int() [L109] CALL main1() [L49] signed char x = __VERIFIER_nondet_char(); [L50] signed char y = __VERIFIER_nondet_char(); [L51] signed char g; [L53] CALL, EXPR gcd_test(x, y) [L33] signed char t; [L35] COND TRUE a < (signed char)0 [L35] a = -a [L36] COND FALSE !(b < (signed char)0) [L38] COND TRUE b != (signed char)0 [L39] t = b [L40] b = a % b [L41] a = t [L38] COND TRUE b != (signed char)0 [L39] t = b [L40] b = a % b [L41] a = t [L38] COND TRUE b != (signed char)0 [L39] t = b [L40] b = a % b [L41] a = t [L38] COND FALSE !(b != (signed char)0) [L43] return a; [L53] RET, EXPR gcd_test(x, y) [L53] g = gcd_test(x, y) [L55] COND TRUE y > (signed char)0 [L56] CALL __VERIFIER_assert(y >= g) [L26] COND TRUE !(cond) [L27] reach_error() - UnprovableResult [Line: 102]: 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 3 procedures, 28 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 24.2s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 215 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 173 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 100 IncrementalHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 42 mSDtfsCounter, 100 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 13, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 22.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 166 SizeOfPredicates, 7 NumberOfNonLiveVariables, 168 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_3_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS --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 803cbc2ab2fb54f2ccf794a1cf55b1df2243f22f996d0e59d0f49967facf7958 --- 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-8393723 [2022-11-19 07:31:10,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:31:10,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:31:10,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:31:10,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:31:10,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:31:10,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:31:10,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:31:10,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:31:10,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:31:10,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:31:10,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:31:10,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:31:10,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:31:10,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:31:10,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:31:10,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:31:10,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:31:10,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:31:10,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:31:10,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:31:10,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:31:10,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:31:10,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:31:10,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:31:10,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:31:10,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:31:10,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:31:10,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:31:10,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:31:10,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:31:10,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:31:10,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:31:10,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:31:10,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:31:10,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:31:10,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:31:10,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:31:10,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:31:10,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:31:10,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:31:10,902 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 07:31:10,940 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:31:10,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:31:10,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:31:10,942 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:31:10,943 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:31:10,944 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:31:10,944 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:31:10,944 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:31:10,945 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:31:10,945 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:31:10,946 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:31:10,946 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:31:10,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:31:10,948 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:31:10,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:31:10,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:31:10,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:31:10,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:31:10,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:31:10,950 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:31:10,951 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:31:10,951 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:31:10,951 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:31:10,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:31:10,952 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:31:10,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:31:10,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:31:10,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:31:10,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:31:10,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:31:10,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:31:10,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:31:10,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:31:10,955 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:31:10,955 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:31:10,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:31:10,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:31:10,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:31:10,957 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_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 803cbc2ab2fb54f2ccf794a1cf55b1df2243f22f996d0e59d0f49967facf7958 [2022-11-19 07:31:11,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:31:11,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:31:11,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:31:11,376 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:31:11,377 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:31:11,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/combinations/gcd_2+newton_3_7.i [2022-11-19 07:31:11,449 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/data/5c93d89b3/16ed8fe1240f4548a9408cd09f133dec/FLAGc99c6c4bd [2022-11-19 07:31:11,899 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:31:11,904 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i [2022-11-19 07:31:11,912 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/data/5c93d89b3/16ed8fe1240f4548a9408cd09f133dec/FLAGc99c6c4bd [2022-11-19 07:31:12,287 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/data/5c93d89b3/16ed8fe1240f4548a9408cd09f133dec [2022-11-19 07:31:12,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:31:12,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:31:12,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:31:12,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:31:12,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:31:12,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:31:12" (1/1) ... [2022-11-19 07:31:12,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445efa35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:12, skipping insertion in model container [2022-11-19 07:31:12,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:31:12" (1/1) ... [2022-11-19 07:31:12,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:31:12,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:31:12,513 WARN L234 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_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[1226,1239] [2022-11-19 07:31:12,538 WARN L234 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_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[2862,2875] [2022-11-19 07:31:12,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:31:12,551 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:31:12,615 WARN L234 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_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[1226,1239] [2022-11-19 07:31:12,627 WARN L234 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_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[2862,2875] [2022-11-19 07:31:12,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:31:12,643 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:31:12,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:12 WrapperNode [2022-11-19 07:31:12,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:31:12,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:31:12,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:31:12,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:31:12,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:12" (1/1) ... [2022-11-19 07:31:12,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:12" (1/1) ... [2022-11-19 07:31:12,682 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2022-11-19 07:31:12,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:31:12,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:31:12,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:31:12,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:31:12,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:12" (1/1) ... [2022-11-19 07:31:12,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:12" (1/1) ... [2022-11-19 07:31:12,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:12" (1/1) ... [2022-11-19 07:31:12,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:12" (1/1) ... [2022-11-19 07:31:12,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:12" (1/1) ... [2022-11-19 07:31:12,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:12" (1/1) ... [2022-11-19 07:31:12,711 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:12" (1/1) ... [2022-11-19 07:31:12,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:12" (1/1) ... [2022-11-19 07:31:12,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:31:12,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:31:12,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:31:12,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:31:12,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:12" (1/1) ... [2022-11-19 07:31:12,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:31:12,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:31:12,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:31:12,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:31:12,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:31:12,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:31:12,788 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-19 07:31:12,788 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-19 07:31:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-19 07:31:12,789 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-19 07:31:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:31:12,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:31:12,870 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:31:12,873 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:31:23,973 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:31:23,980 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:31:23,980 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:31:23,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:31:23 BoogieIcfgContainer [2022-11-19 07:31:23,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:31:23,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:31:23,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:31:23,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:31:23,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:31:12" (1/3) ... [2022-11-19 07:31:23,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c16a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:31:23, skipping insertion in model container [2022-11-19 07:31:23,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:12" (2/3) ... [2022-11-19 07:31:23,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c16a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:31:23, skipping insertion in model container [2022-11-19 07:31:23,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:31:23" (3/3) ... [2022-11-19 07:31:23,995 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_7.i [2022-11-19 07:31:24,013 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:31:24,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 07:31:24,065 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:31:24,071 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;@52caedea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:31:24,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 07:31:24,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 07:31:24,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:31:24,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:24,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:31:24,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:31:24,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:24,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-11-19 07:31:24,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:31:24,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905982924] [2022-11-19 07:31:24,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:24,103 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 [2022-11-19 07:31:24,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:31:24,108 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:31:24,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:31:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:24,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:31:24,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:31:24,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:31:24,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:31:24,354 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:31:24,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905982924] [2022-11-19 07:31:24,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905982924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:31:24,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:31:24,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:31:24,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618764287] [2022-11-19 07:31:24,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:31:24,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:31:24,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:31:24,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:31:24,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:24,395 INFO L87 Difference]: Start difference. First operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-19 07:31:24,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:31:24,422 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2022-11-19 07:31:24,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:31:24,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-11-19 07:31:24,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:31:24,431 INFO L225 Difference]: With dead ends: 74 [2022-11-19 07:31:24,431 INFO L226 Difference]: Without dead ends: 33 [2022-11-19 07:31:24,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:24,437 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:31:24,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 4 Unchecked, 0.0s Time] [2022-11-19 07:31:24,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-19 07:31:24,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-19 07:31:24,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 07:31:24,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-19 07:31:24,474 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 11 [2022-11-19 07:31:24,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:31:24,475 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-19 07:31:24,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-19 07:31:24,475 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-19 07:31:24,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:31:24,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:24,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:31:24,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:31:24,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:31:24,690 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:31:24,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:24,693 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-11-19 07:31:24,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:31:24,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795751795] [2022-11-19 07:31:24,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:24,699 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 [2022-11-19 07:31:24,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:31:24,700 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:31:24,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:31:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:24,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:31:24,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:31:24,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:31:24,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:31:24,939 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:31:24,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795751795] [2022-11-19 07:31:24,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795751795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:31:24,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:31:24,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:31:24,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534362506] [2022-11-19 07:31:24,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:31:24,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:31:24,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:31:24,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:31:24,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:31:24,943 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-19 07:31:25,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:31:25,164 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-11-19 07:31:25,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:31:25,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2022-11-19 07:31:25,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:31:25,168 INFO L225 Difference]: With dead ends: 40 [2022-11-19 07:31:25,168 INFO L226 Difference]: Without dead ends: 34 [2022-11-19 07:31:25,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:31:25,170 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:31:25,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 99 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:31:25,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-19 07:31:25,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-11-19 07:31:25,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 07:31:25,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-19 07:31:25,186 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 11 [2022-11-19 07:31:25,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:31:25,186 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-19 07:31:25,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-19 07:31:25,187 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-19 07:31:25,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 07:31:25,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:25,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:31:25,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:31:25,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:31:25,408 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:31:25,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:25,408 INFO L85 PathProgramCache]: Analyzing trace with hash 149955676, now seen corresponding path program 1 times [2022-11-19 07:31:25,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:31:25,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444940754] [2022-11-19 07:31:25,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:25,409 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 [2022-11-19 07:31:25,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:31:25,418 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:31:25,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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 (4)] Waiting until timeout for monitored process [2022-11-19 07:31:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:25,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:31:25,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:31:25,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:31:25,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:31:25,682 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:31:25,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444940754] [2022-11-19 07:31:25,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444940754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:31:25,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:31:25,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:31:25,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631835539] [2022-11-19 07:31:25,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:31:25,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:31:25,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:31:25,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:31:25,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:31:25,684 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-19 07:31:25,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:31:25,803 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2022-11-19 07:31:25,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:31:25,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2022-11-19 07:31:25,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:31:25,807 INFO L225 Difference]: With dead ends: 41 [2022-11-19 07:31:25,807 INFO L226 Difference]: Without dead ends: 33 [2022-11-19 07:31:25,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:31:25,808 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:31:25,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 99 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:31:25,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-19 07:31:25,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-19 07:31:25,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 07:31:25,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-19 07:31:25,814 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 12 [2022-11-19 07:31:25,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:31:25,814 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-19 07:31:25,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-19 07:31:25,818 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-19 07:31:25,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 07:31:25,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:25,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:31:25,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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 (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:31:26,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:31:26,034 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:31:26,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:26,034 INFO L85 PathProgramCache]: Analyzing trace with hash -659390950, now seen corresponding path program 1 times [2022-11-19 07:31:26,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:31:26,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475195145] [2022-11-19 07:31:26,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:26,035 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 [2022-11-19 07:31:26,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:31:26,036 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:31:26,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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 (5)] Waiting until timeout for monitored process [2022-11-19 07:31:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:26,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 07:31:26,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:31:26,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:31:26,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:31:27,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:31:27,516 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:31:27,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475195145] [2022-11-19 07:31:27,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475195145] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:31:27,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1808027561] [2022-11-19 07:31:27,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:27,518 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:31:27,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:31:27,523 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:31:27,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-11-19 07:31:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:27,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 07:31:27,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:31:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:31:28,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:31:28,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:31:28,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1808027561] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:31:28,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325151555] [2022-11-19 07:31:28,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:28,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:31:28,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:31:28,200 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:31:28,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:31:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:28,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 07:31:28,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:31:28,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:31:28,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:31:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:31:29,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325151555] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:31:29,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:31:29,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 7] total 18 [2022-11-19 07:31:29,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422335096] [2022-11-19 07:31:29,427 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:31:29,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-19 07:31:29,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:31:29,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-19 07:31:29,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-11-19 07:31:29,428 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 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) [2022-11-19 07:31:33,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:31:33,669 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2022-11-19 07:31:33,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-19 07:31:33,670 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 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 12 [2022-11-19 07:31:33,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:31:33,671 INFO L225 Difference]: With dead ends: 46 [2022-11-19 07:31:33,671 INFO L226 Difference]: Without dead ends: 23 [2022-11-19 07:31:33,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=248, Invalid=744, Unknown=0, NotChecked=0, Total=992 [2022-11-19 07:31:33,673 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 61 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:31:33,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 248 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-19 07:31:33,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-19 07:31:33,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-19 07:31:33,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 07:31:33,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-11-19 07:31:33,677 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 12 [2022-11-19 07:31:33,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:31:33,677 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-11-19 07:31:33,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 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) [2022-11-19 07:31:33,678 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-11-19 07:31:33,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 07:31:33,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:33,679 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:31:33,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:31:33,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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 (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:31:34,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:31:34,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:31:34,292 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:31:34,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:34,292 INFO L85 PathProgramCache]: Analyzing trace with hash -614441937, now seen corresponding path program 1 times [2022-11-19 07:31:34,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:31:34,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813207490] [2022-11-19 07:31:34,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:34,294 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 [2022-11-19 07:31:34,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:31:34,297 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:31:34,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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 (8)] Waiting until timeout for monitored process [2022-11-19 07:31:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:31:51,254 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:32:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:32:05,294 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-19 07:32:05,294 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:32:05,295 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-19 07:32:05,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-19 07:32:05,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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 (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:32:05,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:32:05,500 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-19 07:32:05,503 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:32:05,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:32:05 BoogieIcfgContainer [2022-11-19 07:32:05,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:32:05,536 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:32:05,536 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:32:05,536 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:32:05,537 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:31:23" (3/4) ... [2022-11-19 07:32:05,539 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 07:32:05,580 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:32:05,581 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:32:05,581 INFO L158 Benchmark]: Toolchain (without parser) took 53288.42ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 29.3MB in the beginning and 34.7MB in the end (delta: -5.4MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2022-11-19 07:32:05,582 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 52.4MB. Free memory was 32.4MB in the beginning and 32.4MB in the end (delta: 34.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:32:05,582 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.44ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 29.1MB in the beginning and 49.6MB in the end (delta: -20.5MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2022-11-19 07:32:05,582 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.76ms. Allocated memory is still 67.1MB. Free memory was 49.6MB in the beginning and 47.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:32:05,583 INFO L158 Benchmark]: Boogie Preprocessor took 31.84ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 46.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:32:05,583 INFO L158 Benchmark]: RCFGBuilder took 11266.57ms. Allocated memory is still 67.1MB. Free memory was 46.2MB in the beginning and 48.6MB in the end (delta: -2.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 07:32:05,584 INFO L158 Benchmark]: TraceAbstraction took 41551.59ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 37.2MB in the end (delta: 10.7MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2022-11-19 07:32:05,584 INFO L158 Benchmark]: Witness Printer took 44.62ms. Allocated memory is still 67.1MB. Free memory was 37.2MB in the beginning and 34.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:32:05,586 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 52.4MB. Free memory was 32.4MB in the beginning and 32.4MB in the end (delta: 34.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.44ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 29.1MB in the beginning and 49.6MB in the end (delta: -20.5MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.76ms. Allocated memory is still 67.1MB. Free memory was 49.6MB in the beginning and 47.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.84ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 46.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 11266.57ms. Allocated memory is still 67.1MB. Free memory was 46.2MB in the beginning and 48.6MB in the end (delta: -2.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 41551.59ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 37.2MB in the end (delta: 10.7MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * Witness Printer took 44.62ms. Allocated memory is still 67.1MB. Free memory was 37.2MB in the beginning and 34.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 102]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L93] CALL, EXPR f(IN) VAL [\old(x)=-1.3255231380462646] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=-1.3255231380462646, \result=-0.9728898406028748, x=-1.3255231380462646] [L93] RET, EXPR f(IN) VAL [f(IN)=-0.9728898406028748, IN=-1.3255231380462646] [L93] CALL, EXPR fp(IN) VAL [\old(x)=-1.3255231380462646] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-1.3255231380462646, \result=0.25765636563301086, x=-1.3255231380462646] [L93] RET, EXPR fp(IN) VAL [f(IN)=-0.9728898406028748, fp(IN)=0.25765636563301086, IN=-1.3255231380462646] [L93] float x = IN - f(IN)/fp(IN); [L95] CALL, EXPR f(x) VAL [\old(x)=2.45039701461792] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=2.45039701461792, \result=0.8396438956260681, x=2.45039701461792] [L95] RET, EXPR f(x) VAL [f(x)=0.8396438956260681, IN=-1.3255231380462646, x=2.45039701461792] [L95] CALL, EXPR fp(x) VAL [\old(x)=2.45039701461792] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=2.45039701461792, \result=-0.19933182001113892, x=2.45039701461792] [L95] RET, EXPR fp(x) VAL [f(x)=0.8396438956260681, fp(x)=-0.19933182001113892, IN=-1.3255231380462646, x=2.45039701461792] [L95] x = x - f(x)/fp(x) [L97] CALL, EXPR f(x) VAL [\old(x)=6.662689208984375] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=6.662689208984375, \result=182.4228973388672, x=6.662689208984375] [L97] RET, EXPR f(x) VAL [f(x)=182.4228973388672, IN=-1.3255231380462646, x=6.662689208984375] [L97] CALL, EXPR fp(x) VAL [\old(x)=6.662689208984375] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=6.662689208984375, \result=182.40936279296875, x=6.662689208984375] [L97] RET, EXPR fp(x) VAL [f(x)=182.4228973388672, fp(x)=182.40936279296875, IN=-1.3255231380462646, x=6.662689208984375] [L97] x = x - f(x)/fp(x) [L101] COND TRUE !(x < 0.1) VAL [IN=-1.3255231380462646, x=5.662614822387695] [L102] reach_error() VAL [IN=-1.3255231380462646, x=5.662614822387695] - 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 3 procedures, 40 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 41.4s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 67 mSDsluCounter, 536 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 4 IncrementalHoareTripleChecker+Unchecked, 389 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 100 IncrementalHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 147 mSDtfsCounter, 100 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 29, 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, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 17.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 97 ConstructedInterpolants, 1 QuantifiedInterpolants, 435 SizeOfPredicates, 27 NumberOfNonLiveVariables, 258 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 1/7 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! [2022-11-19 07:32:05,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1521fc-a7f9-4c18-8e0b-6800d81bf343/bin/utaipan-I9t0OCRTmS/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