./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/gcd_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P --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 7da096d64cf3390a2bb7c442378ab6f697dfdf0fd9d4078975ad6171409858bb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:02:36,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:02:36,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:02:36,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:02:36,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:02:36,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:02:36,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:02:36,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:02:36,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:02:36,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:02:36,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:02:36,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:02:36,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:02:36,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:02:36,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:02:36,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:02:36,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:02:36,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:02:36,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:02:36,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:02:36,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:02:36,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:02:36,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:02:36,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:02:36,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:02:36,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:02:36,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:02:36,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:02:36,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:02:36,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:02:36,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:02:36,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:02:36,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:02:36,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:02:36,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:02:36,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:02:36,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:02:36,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:02:36,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:02:36,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:02:36,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:02:36,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:02:36,450 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:02:36,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:02:36,451 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:02:36,451 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:02:36,452 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:02:36,459 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:02:36,459 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:02:36,459 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:02:36,459 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:02:36,460 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:02:36,461 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:02:36,461 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:02:36,461 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:02:36,462 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:02:36,462 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:02:36,462 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:02:36,462 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:02:36,462 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:02:36,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:02:36,464 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:02:36,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:02:36,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:02:36,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:02:36,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:02:36,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:02:36,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:02:36,468 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:02:36,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:02:36,468 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:02:36,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:02:36,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:02:36,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:02:36,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:02:36,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:02:36,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:02:36,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:02:36,470 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:02:36,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:02:36,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:02:36,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:02:36,471 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:02:36,471 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7da096d64cf3390a2bb7c442378ab6f697dfdf0fd9d4078975ad6171409858bb [2021-11-21 00:02:36,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:02:36,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:02:36,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:02:36,732 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:02:36,732 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:02:36,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/bitvector/gcd_2.c [2021-11-21 00:02:36,809 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/data/e48661c63/24c72dd228ad41d3b91ae5c49994b4be/FLAGce678d2ac [2021-11-21 00:02:37,261 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:02:37,261 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/sv-benchmarks/c/bitvector/gcd_2.c [2021-11-21 00:02:37,268 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/data/e48661c63/24c72dd228ad41d3b91ae5c49994b4be/FLAGce678d2ac [2021-11-21 00:02:37,654 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/data/e48661c63/24c72dd228ad41d3b91ae5c49994b4be [2021-11-21 00:02:37,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:02:37,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:02:37,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:02:37,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:02:37,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:02:37,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:02:37" (1/1) ... [2021-11-21 00:02:37,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@684a0f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:37, skipping insertion in model container [2021-11-21 00:02:37,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:02:37" (1/1) ... [2021-11-21 00:02:37,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:02:37,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:02:37,894 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/sv-benchmarks/c/bitvector/gcd_2.c[664,677] [2021-11-21 00:02:37,908 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:02:37,916 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:02:37,928 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/sv-benchmarks/c/bitvector/gcd_2.c[664,677] [2021-11-21 00:02:37,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:02:37,947 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:02:37,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:37 WrapperNode [2021-11-21 00:02:37,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:02:37,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:02:37,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:02:37,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:02:37,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:37" (1/1) ... [2021-11-21 00:02:37,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:37" (1/1) ... [2021-11-21 00:02:37,982 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 47 [2021-11-21 00:02:37,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:02:37,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:02:37,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:02:37,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:02:37,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:37" (1/1) ... [2021-11-21 00:02:37,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:37" (1/1) ... [2021-11-21 00:02:37,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:37" (1/1) ... [2021-11-21 00:02:37,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:37" (1/1) ... [2021-11-21 00:02:37,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:37" (1/1) ... [2021-11-21 00:02:38,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:37" (1/1) ... [2021-11-21 00:02:38,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:37" (1/1) ... [2021-11-21 00:02:38,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:02:38,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:02:38,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:02:38,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:02:38,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:37" (1/1) ... [2021-11-21 00:02:38,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:02:38,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:02:38,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:02:38,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:02:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:02:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:02:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:02:38,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:02:38,145 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:02:38,147 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:02:38,264 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:02:38,324 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:02:38,324 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:02:38,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:02:38 BoogieIcfgContainer [2021-11-21 00:02:38,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:02:38,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:02:38,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:02:38,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:02:38,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:02:37" (1/3) ... [2021-11-21 00:02:38,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ded33a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:02:38, skipping insertion in model container [2021-11-21 00:02:38,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:37" (2/3) ... [2021-11-21 00:02:38,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ded33a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:02:38, skipping insertion in model container [2021-11-21 00:02:38,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:02:38" (3/3) ... [2021-11-21 00:02:38,335 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2.c [2021-11-21 00:02:38,340 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:02:38,341 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:02:38,389 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:02:38,397 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:02:38,397 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:02:38,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2021-11-21 00:02:38,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 00:02:38,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:02:38,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 00:02:38,417 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:02:38,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:02:38,423 INFO L85 PathProgramCache]: Analyzing trace with hash 84816067, now seen corresponding path program 1 times [2021-11-21 00:02:38,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:02:38,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67436959] [2021-11-21 00:02:38,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:02:38,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:02:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:02:38,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:02:38,689 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:02:38,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67436959] [2021-11-21 00:02:38,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67436959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:02:38,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:02:38,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:02:38,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604803185] [2021-11-21 00:02:38,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:02:38,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:02:38,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:02:38,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:02:38,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:02:38,760 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:02:38,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:02:38,822 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2021-11-21 00:02:38,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:02:38,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-11-21 00:02:38,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:02:38,833 INFO L225 Difference]: With dead ends: 19 [2021-11-21 00:02:38,834 INFO L226 Difference]: Without dead ends: 7 [2021-11-21 00:02:38,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:02:38,843 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:02:38,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 13 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:02:38,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-21 00:02:38,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-21 00:02:38,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:02:38,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-11-21 00:02:38,877 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-11-21 00:02:38,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:02:38,878 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-11-21 00:02:38,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:02:38,881 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-11-21 00:02:38,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 00:02:38,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:02:38,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 00:02:38,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:02:38,885 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:02:38,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:02:38,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1696327067, now seen corresponding path program 1 times [2021-11-21 00:02:38,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:02:38,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750297426] [2021-11-21 00:02:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:02:38,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:02:38,922 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:02:38,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [517729194] [2021-11-21 00:02:38,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:02:38,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:02:38,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:02:38,930 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:02:38,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:02:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:02:39,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 00:02:39,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:02:39,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:02:39,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:02:39,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:02:39,741 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:02:39,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750297426] [2021-11-21 00:02:39,742 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:02:39,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517729194] [2021-11-21 00:02:39,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517729194] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:02:39,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [383174434] [2021-11-21 00:02:39,770 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-21 00:02:39,771 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:02:39,775 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:02:39,796 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:02:39,797 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:02:45,896 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:02:46,095 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:02:46,096 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 00:02:46,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-21 00:02:46,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568669558] [2021-11-21 00:02:46,097 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 00:02:46,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 00:02:46,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:02:46,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 00:02:46,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:02:46,099 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:02:46,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:02:46,326 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-11-21 00:02:46,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:02:46,327 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 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 [2021-11-21 00:02:46,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:02:46,327 INFO L225 Difference]: With dead ends: 14 [2021-11-21 00:02:46,328 INFO L226 Difference]: Without dead ends: 9 [2021-11-21 00:02:46,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-11-21 00:02:46,330 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:02:46,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 13 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:02:46,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-21 00:02:46,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-21 00:02:46,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:02:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-21 00:02:46,334 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-11-21 00:02:46,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:02:46,334 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-11-21 00:02:46,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:02:46,335 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-21 00:02:46,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 00:02:46,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:02:46,335 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2021-11-21 00:02:46,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:02:46,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-21 00:02:46,536 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:02:46,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:02:46,537 INFO L85 PathProgramCache]: Analyzing trace with hash 936209957, now seen corresponding path program 2 times [2021-11-21 00:02:46,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:02:46,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667402343] [2021-11-21 00:02:46,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:02:46,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:02:46,547 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:02:46,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1959833826] [2021-11-21 00:02:46,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:02:46,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:02:46,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:02:46,560 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:02:46,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f03a403-c66e-47ae-a592-0f741e6cf294/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:02:46,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-21 00:02:46,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:02:46,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-21 00:02:46,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:11:03,770 WARN L838 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main_~y~0#1| 127) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_27| Int)) (and (or (and (<= |c_ULTIMATE.start_main_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_27|) (<= 0 |c_ULTIMATE.start_main_~y~0#1|) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| 255) (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_main_~y~0#1|)) 256))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse0) 256)) (<= .cse0 127) (not (= .cse0 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse2 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_main_~y~0#1|))) (let ((.cse3 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| 255) .cse2) 256))) (and (let ((.cse1 (mod .cse2 256))) (or (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse1)) 256)) (< 127 .cse1)) (and (or (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse1) 256)) (not (= .cse1 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (and (not (= .cse2 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ .cse3 (- 256))) 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0))) (<= .cse1 127)))) (< 127 .cse3))))))) (and (let ((.cse10 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (or (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse4 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse5 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse4 (- 256))))) (and (<= (mod (+ (* .cse4 255) .cse5) 256) 127) (or (let ((.cse6 (mod .cse5 256))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse6) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|) (not (= .cse6 0)))) (and (not (= .cse5 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) (mod (+ .cse4 .cse5) 256))) 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse7 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse8 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse7 (- 256))))) (and (< 127 (mod (+ (* .cse7 255) .cse8) 256)) (or (let ((.cse9 (mod .cse8 256))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse9) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|) (not (= .cse9 0)))) (and (not (= .cse8 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) (mod (+ .cse7 .cse8) 256))) 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)))))))) (< 127 .cse10)) (and (<= .cse10 127) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse11 (mod (let ((.cse12 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (+ (* .cse12 255) (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse12))) 256))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse11) 256)) (<= .cse11 127) (not (= .cse11 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse16 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse15 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse16))) (let ((.cse14 (mod (+ (* .cse16 255) .cse15) 256))) (and (let ((.cse13 (mod .cse15 256))) (or (and (< 127 .cse13) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse13)) 256))) (and (<= .cse13 127) (or (and (not (= .cse13 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse13) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse14)) 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0) (not (= .cse15 0))))))) (< 127 .cse14))))))) (<= .cse10 |v_ULTIMATE.start_gcd_test_~a#1_27|)))) (< |c_ULTIMATE.start_main_~y~0#1| 0))) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_27|))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_27| Int)) (and (< |v_ULTIMATE.start_gcd_test_~a#1_27| 0) (let ((.cse44 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse17 (< 127 .cse44)) (.cse26 (< |c_ULTIMATE.start_main_~y~0#1| 0)) (.cse27 (<= .cse44 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_27|)))) (or (and .cse17 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse21 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse20 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse21 (- 256))))) (let ((.cse18 (mod (+ .cse21 .cse20) 256))) (let ((.cse19 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse18)))) (and (= (mod (+ .cse18 .cse19) 256) (+ |c_ULTIMATE.start_gcd_test_~b#1| 256)) (not (= .cse19 0)) (not (= .cse20 0)) (< 127 (mod (+ (* .cse21 255) .cse20) 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse25 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse24 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse25 (- 256))))) (let ((.cse22 (mod (+ .cse25 .cse24) 256))) (let ((.cse23 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse22)))) (and (= (mod (+ .cse22 .cse23) 256) (+ |c_ULTIMATE.start_gcd_test_~b#1| 256)) (not (= .cse23 0)) (not (= .cse24 0)) (<= (mod (+ (* .cse25 255) .cse24) 256) 127) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)))))))) .cse26 .cse27) (and .cse17 .cse26 .cse27 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse30 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse31 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse30 (- 256))))) (let ((.cse29 (mod .cse31 256))) (let ((.cse28 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse29))) (and (not (= .cse28 0)) (= (mod (+ (* .cse29 255) .cse28) 256) (+ |c_ULTIMATE.start_gcd_test_~b#1| 256)) (< 127 (mod (+ (* .cse30 255) .cse31) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|) (not (= .cse29 0)))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse34 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse35 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse34 (- 256))))) (let ((.cse33 (mod .cse35 256))) (let ((.cse32 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse33))) (and (not (= .cse32 0)) (= (mod (+ (* .cse33 255) .cse32) 256) (+ |c_ULTIMATE.start_gcd_test_~b#1| 256)) (<= (mod (+ (* .cse34 255) .cse35) 256) 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|) (not (= .cse33 0)))))))))) (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse39 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse38 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse39 (- 256))))) (let ((.cse36 (mod (+ .cse39 .cse38) 256))) (let ((.cse37 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse36)))) (and (= (mod (+ .cse36 .cse37) 256) (+ |c_ULTIMATE.start_gcd_test_~b#1| 256)) (not (= .cse37 0)) (not (= .cse38 0)) (<= (mod (+ (* .cse39 255) .cse38) 256) 127) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0) (<= (mod (+ .cse37 (* .cse36 255)) 256) 127))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse42 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse43 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse42 (- 256))))) (let ((.cse40 (mod (+ .cse42 .cse43) 256))) (let ((.cse41 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse40)))) (and (= (mod (+ .cse40 .cse41) 256) (+ |c_ULTIMATE.start_gcd_test_~b#1| 256)) (not (= .cse41 0)) (< 127 (mod (+ (* .cse42 255) .cse43) 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0) (<= (mod (+ .cse41 (* .cse40 255)) 256) 127)))))))) .cse17 .cse26 .cse27)))))) (and (let ((.cse55 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (or (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_27| Int)) (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse47 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse46 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse47 (- 256))))) (and (or (let ((.cse45 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) (mod (+ .cse47 .cse46) 256))))) (and (= .cse45 0) (not (= .cse46 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse45 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0))) (let ((.cse49 (mod .cse46 256))) (let ((.cse48 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse49))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse48 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|) (not (= .cse49 0)) (= .cse48 0))))) (< 127 (mod (+ (* .cse47 255) .cse46) 256)))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse52 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse51 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse52 (- 256))))) (and (or (let ((.cse50 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) (mod (+ .cse52 .cse51) 256))))) (and (= .cse50 0) (not (= .cse51 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse50 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0))) (let ((.cse54 (mod .cse51 256))) (let ((.cse53 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse54))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse53 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|) (not (= .cse54 0)) (= .cse53 0))))) (<= (mod (+ (* .cse52 255) .cse51) 256) 127)))))) (<= (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256) (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_27|)))) (< 127 .cse55)) (and (<= .cse55 127) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_27| Int)) (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse57 (mod (let ((.cse58 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (+ (* .cse58 255) (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse58))) 256))) (let ((.cse56 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse57))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse56 256)) (<= .cse57 127) (= .cse56 0) (not (= .cse57 0)))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse65 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse62 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse65))) (let ((.cse63 (mod (+ (* .cse65 255) .cse62) 256))) (and (let ((.cse59 (mod .cse62 256))) (or (and (<= .cse59 127) (or (let ((.cse60 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse59))) (and (not (= .cse59 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse60 256)) (= .cse60 0) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|))) (let ((.cse61 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse63)))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse61 256)) (= .cse61 0) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0) (not (= .cse62 0)))))) (let ((.cse64 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse59)))) (and (< 127 .cse59) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse64 256)) (= .cse64 0))))) (< 127 .cse63))))))) (<= (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256) |v_ULTIMATE.start_gcd_test_~a#1_27|)))))) (< |c_ULTIMATE.start_main_~y~0#1| 0)) (and (<= 0 |c_ULTIMATE.start_main_~y~0#1|) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_27| Int)) (and (<= |c_ULTIMATE.start_main_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_27|) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse67 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_main_~y~0#1|))) (let ((.cse68 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| 255) .cse67) 256))) (and (let ((.cse70 (mod .cse67 256))) (or (and (or (let ((.cse66 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ .cse68 (- 256))))) (and (= .cse66 0) (not (= .cse67 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse66 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0))) (let ((.cse69 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse70))) (and (= .cse69 0) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse69 256)) (not (= .cse70 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|)))) (<= .cse70 127)) (let ((.cse71 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse70)))) (and (= .cse71 0) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse71 256)) (< 127 .cse70))))) (< 127 .cse68))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse73 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| 255) (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_main_~y~0#1|)) 256))) (let ((.cse72 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse73))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse72 256)) (<= .cse73 127) (not (= .cse73 0)) (= .cse72 0))))))))))) is different from false [2021-11-21 00:12:15,678 WARN L838 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_28| Int)) (let ((.cse0 (mod |v_ULTIMATE.start_gcd_test_~a#1_28| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (not (= .cse0 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_28| 0) (let ((.cse10 (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse0) 256)) (.cse9 (+ |c_ULTIMATE.start_gcd_test_~b#1| 256)) (.cse11 (< |c_ULTIMATE.start_gcd_test_~a#1| 0))) (let ((.cse4 (and (= .cse10 .cse9) .cse11)) (.cse5 (< 127 .cse10)) (.cse3 (and .cse11 (= |c_ULTIMATE.start_gcd_test_~b#1| .cse10))) (.cse1 (<= .cse10 127)) (.cse6 (<= 0 |c_ULTIMATE.start_gcd_test_~a#1|)) (.cse7 (mod (+ (* |c_ULTIMATE.start_gcd_test_~a#1| 255) .cse0) 256))) (or (and (let ((.cse2 (and .cse6 (= |c_ULTIMATE.start_gcd_test_~b#1| .cse7)))) (or (and .cse1 (or .cse2 .cse3)) (and (or .cse4 .cse2) .cse5))) (<= .cse7 127)) (and (< 127 .cse7) (let ((.cse8 (and .cse6 (= .cse7 .cse9)))) (or (and (or .cse4 .cse8) .cse5) (and (or .cse8 .cse3) .cse1)))))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_28| Int)) (let ((.cse12 (mod |v_ULTIMATE.start_gcd_test_~a#1_28| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (or (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_28|) (= .cse12 0)) (let ((.cse13 (mod .cse12 256))) (or (and (< 127 .cse13) (= .cse13 (+ |c_ULTIMATE.start_gcd_test_~b#1| 256))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| .cse13) (<= .cse13 127)))))))) (<= |c_ULTIMATE.start_main_~y~0#1| 127) (not (= |c_ULTIMATE.start_gcd_test_~a#1| 0)) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_27| Int)) (and (let ((.cse41 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse14 (< 127 .cse41)) (.cse23 (< |c_ULTIMATE.start_main_~y~0#1| 0)) (.cse24 (<= .cse41 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_27|)))) (or (and .cse14 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse17 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse18 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse17 (- 256))))) (let ((.cse16 (mod .cse18 256))) (let ((.cse15 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse16))) (and (not (= .cse15 0)) (= (mod (+ (* .cse16 255) .cse15) 256) (+ |c_ULTIMATE.start_gcd_test_~a#1| 256)) (<= (mod (+ (* .cse17 255) .cse18) 256) 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|) (not (= .cse16 0)))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse20 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse21 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse20 (- 256))))) (let ((.cse22 (mod .cse21 256))) (let ((.cse19 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse22))) (and (not (= .cse19 0)) (< 127 (mod (+ (* .cse20 255) .cse21) 256)) (= (mod (+ (* .cse22 255) .cse19) 256) (+ |c_ULTIMATE.start_gcd_test_~a#1| 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|) (not (= .cse22 0))))))))) .cse23 .cse24) (and .cse14 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse26 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse27 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse26 (- 256))))) (let ((.cse28 (mod (+ .cse26 .cse27) 256))) (let ((.cse25 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse28)))) (and (not (= .cse25 0)) (< 127 (mod (+ (* .cse26 255) .cse27) 256)) (= (+ |c_ULTIMATE.start_gcd_test_~a#1| 256) (mod (+ .cse28 .cse25) 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0) (<= (mod (+ .cse25 (* .cse28 255)) 256) 127))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse31 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse30 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse31 (- 256))))) (let ((.cse32 (mod (+ .cse31 .cse30) 256))) (let ((.cse29 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse32)))) (and (not (= .cse29 0)) (not (= .cse30 0)) (<= (mod (+ (* .cse31 255) .cse30) 256) 127) (= (+ |c_ULTIMATE.start_gcd_test_~a#1| 256) (mod (+ .cse32 .cse29) 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0) (<= (mod (+ .cse29 (* .cse32 255)) 256) 127)))))))) .cse23 .cse24) (and .cse14 .cse23 .cse24 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse35 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse34 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse35 (- 256))))) (let ((.cse36 (mod (+ .cse35 .cse34) 256))) (let ((.cse33 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse36)))) (and (not (= .cse33 0)) (not (= .cse34 0)) (< 127 (mod (+ (* .cse35 255) .cse34) 256)) (= (+ |c_ULTIMATE.start_gcd_test_~a#1| 256) (mod (+ .cse36 .cse33) 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse39 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse38 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse39 (- 256))))) (let ((.cse40 (mod (+ .cse39 .cse38) 256))) (let ((.cse37 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse40)))) (and (not (= .cse37 0)) (not (= .cse38 0)) (<= (mod (+ (* .cse39 255) .cse38) 256) 127) (= (+ |c_ULTIMATE.start_gcd_test_~a#1| 256) (mod (+ .cse40 .cse37) 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)))))))))))) (< |v_ULTIMATE.start_gcd_test_~a#1_27| 0))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_27| Int)) (and (or (and (<= |c_ULTIMATE.start_main_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_27|) (<= 0 |c_ULTIMATE.start_main_~y~0#1|) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse43 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_main_~y~0#1|))) (let ((.cse44 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| 255) .cse43) 256))) (and (let ((.cse42 (mod .cse43 256))) (or (and (<= .cse42 127) (or (and (not (= .cse43 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ .cse44 (- 256))) 256))) (and (not (= .cse42 0)) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse42) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|)))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse42)) 256)) (< 127 .cse42)))) (< 127 .cse44))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse45 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| 255) (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_main_~y~0#1|)) 256))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse45) 256)) (<= .cse45 127) (not (= .cse45 0))))))) (and (let ((.cse46 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (or (and (< 127 .cse46) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse47 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse48 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse47 (- 256))))) (and (or (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) (mod (+ .cse47 .cse48) 256))) 256)) (not (= .cse48 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)) (let ((.cse49 (mod .cse48 256))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse49) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|) (not (= .cse49 0))))) (< 127 (mod (+ (* .cse47 255) .cse48) 256)))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse50 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse51 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse50 (- 256))))) (and (or (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) (mod (+ .cse50 .cse51) 256))) 256)) (not (= .cse51 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)) (let ((.cse52 (mod .cse51 256))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse52) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|) (not (= .cse52 0))))) (<= (mod (+ (* .cse50 255) .cse51) 256) 127))))))) (and (<= .cse46 127) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse53 (mod (let ((.cse54 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (+ (* .cse54 255) (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse54))) 256))) (and (<= .cse53 127) (not (= .cse53 0)) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse53) 256))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse58 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse57 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse58))) (let ((.cse55 (mod (+ (* .cse58 255) .cse57) 256))) (and (< 127 .cse55) (let ((.cse56 (mod .cse57 256))) (or (and (< 127 .cse56) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse56)) 256))) (and (<= .cse56 127) (or (and (not (= .cse56 0)) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse56) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (and (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0) (not (= .cse57 0)) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse55)) 256))))))))))))) (<= .cse46 |v_ULTIMATE.start_gcd_test_~a#1_27|)))) (< |c_ULTIMATE.start_main_~y~0#1| 0))) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_27|))))) is different from false [2021-11-21 00:13:21,085 WARN L838 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main_~y~0#1| 127) (<= |c_ULTIMATE.start_main_~g~0#1| 127) (not (= |c_ULTIMATE.start_main_~g~0#1| 0)) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_27| Int)) (and (let ((.cse27 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse8 (< 127 .cse27)) (.cse9 (< |c_ULTIMATE.start_main_~y~0#1| 0)) (.cse10 (<= .cse27 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_27|)))) (or (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse3 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse1 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse3 (- 256))))) (let ((.cse2 (mod (+ .cse3 .cse1) 256))) (let ((.cse0 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse2)))) (and (not (= .cse0 0)) (not (= .cse1 0)) (= (mod (+ .cse2 .cse0) 256) (+ 256 |c_ULTIMATE.start_main_~g~0#1|)) (<= (mod (+ (* .cse3 255) .cse1) 256) 127) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0) (<= (mod (+ .cse0 (* .cse2 255)) 256) 127))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse5 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse6 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse5 (- 256))))) (let ((.cse7 (mod (+ .cse5 .cse6) 256))) (let ((.cse4 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse7)))) (and (not (= .cse4 0)) (< 127 (mod (+ (* .cse5 255) .cse6) 256)) (= (mod (+ .cse7 .cse4) 256) (+ 256 |c_ULTIMATE.start_main_~g~0#1|)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0) (<= (mod (+ .cse4 (* .cse7 255)) 256) 127)))))))) .cse8 .cse9 .cse10) (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse13 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse12 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse13 (- 256))))) (let ((.cse14 (mod (+ .cse13 .cse12) 256))) (let ((.cse11 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse14)))) (and (not (= .cse11 0)) (not (= .cse12 0)) (< 127 (mod (+ (* .cse13 255) .cse12) 256)) (= (mod (+ .cse14 .cse11) 256) (+ 256 |c_ULTIMATE.start_main_~g~0#1|)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse18 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse16 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse18 (- 256))))) (let ((.cse17 (mod (+ .cse18 .cse16) 256))) (let ((.cse15 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse17)))) (and (not (= .cse15 0)) (not (= .cse16 0)) (= (mod (+ .cse17 .cse15) 256) (+ 256 |c_ULTIMATE.start_main_~g~0#1|)) (<= (mod (+ (* .cse18 255) .cse16) 256) 127) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)))))))) .cse8 .cse9 .cse10) (and .cse8 .cse9 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse20 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse21 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse20 (- 256))))) (let ((.cse22 (mod .cse21 256))) (let ((.cse19 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse22))) (and (not (= .cse19 0)) (< 127 (mod (+ (* .cse20 255) .cse21) 256)) (= (mod (+ (* .cse22 255) .cse19) 256) (+ 256 |c_ULTIMATE.start_main_~g~0#1|)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|) (not (= .cse22 0)))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse24 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse25 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse24 (- 256))))) (let ((.cse26 (mod .cse25 256))) (let ((.cse23 (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse26))) (and (not (= .cse23 0)) (<= (mod (+ (* .cse24 255) .cse25) 256) 127) (= (mod (+ (* .cse26 255) .cse23) 256) (+ 256 |c_ULTIMATE.start_main_~g~0#1|)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|) (not (= .cse26 0))))))))) .cse10)))) (< |v_ULTIMATE.start_gcd_test_~a#1_27| 0))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_27| Int)) (and (or (and (<= |c_ULTIMATE.start_main_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_27|) (<= 0 |c_ULTIMATE.start_main_~y~0#1|) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse28 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| 255) (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_main_~y~0#1|)) 256))) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse28) 256) |c_ULTIMATE.start_main_~g~0#1|) (<= .cse28 127) (not (= .cse28 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse31 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_main_~y~0#1|))) (let ((.cse29 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| 255) .cse31) 256))) (and (< 127 .cse29) (let ((.cse30 (mod .cse31 256))) (or (and (<= .cse30 127) (or (and (= |c_ULTIMATE.start_main_~g~0#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse30) 256)) (not (= .cse30 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (and (not (= .cse31 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ .cse29 (- 256))) 256) |c_ULTIMATE.start_main_~g~0#1|)))) (and (= |c_ULTIMATE.start_main_~g~0#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse30)) 256)) (< 127 .cse30)))))))))) (and (let ((.cse38 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (or (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse32 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse33 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse32 (- 256))))) (and (or (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) (mod (+ .cse32 .cse33) 256))) 256) |c_ULTIMATE.start_main_~g~0#1|) (not (= .cse33 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)) (let ((.cse34 (mod .cse33 256))) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse34) 256) |c_ULTIMATE.start_main_~g~0#1|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|) (not (= .cse34 0))))) (<= (mod (+ (* .cse32 255) .cse33) 256) 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse35 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse36 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| (+ .cse35 (- 256))))) (and (or (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) (mod (+ .cse35 .cse36) 256))) 256) |c_ULTIMATE.start_main_~g~0#1|) (not (= .cse36 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)) (let ((.cse37 (mod .cse36 256))) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse37) 256) |c_ULTIMATE.start_main_~g~0#1|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|) (not (= .cse37 0))))) (< 127 (mod (+ (* .cse35 255) .cse36) 256))))))) (< 127 .cse38)) (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse39 (mod (let ((.cse40 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (+ (* .cse40 255) (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse40))) 256))) (and (<= .cse39 127) (not (= .cse39 0)) (= |c_ULTIMATE.start_main_~g~0#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse39) 256))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse44 (mod (* |c_ULTIMATE.start_main_~y~0#1| 255) 256))) (let ((.cse43 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse44))) (let ((.cse42 (mod (+ (* .cse44 255) .cse43) 256))) (and (let ((.cse41 (mod .cse43 256))) (or (and (<= .cse41 127) (or (and (not (= .cse41 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_26|) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| .cse41) 256) |c_ULTIMATE.start_main_~g~0#1|)) (and (= |c_ULTIMATE.start_main_~g~0#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse42)) 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0) (not (= .cse43 0))))) (and (= |c_ULTIMATE.start_main_~g~0#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_27| (+ (- 256) .cse41)) 256)) (< 127 .cse41)))) (< 127 .cse42))))))) (<= .cse38 127) (<= .cse38 |v_ULTIMATE.start_gcd_test_~a#1_27|)))) (< |c_ULTIMATE.start_main_~y~0#1| 0))) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_27|)))) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_28| Int)) (let ((.cse45 (mod |v_ULTIMATE.start_gcd_test_~a#1_28| |c_ULTIMATE.start_main_~g~0#1|))) (and (or (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_28|) (= .cse45 0)) (= (mod .cse45 256) 0)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_28| Int)) (let ((.cse46 (mod |v_ULTIMATE.start_gcd_test_~a#1_28| |c_ULTIMATE.start_main_~g~0#1|))) (and (< |v_ULTIMATE.start_gcd_test_~a#1_28| 0) (= (mod (+ .cse46 |c_ULTIMATE.start_main_~g~0#1|) 256) 0) (not (= .cse46 0))))))) is different from false [2021-11-21 00:13:34,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 5 not checked. [2021-11-21 00:13:34,951 INFO L328 TraceCheckSpWp]: Computing backward predicates...