./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_1+newton_2_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_2_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh --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 24df3a04bdb7e751c4f0d163e80822f74241222ac6f56a91a0bf72df65694e1b --- 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-2329fc7 [2022-12-14 04:40:26,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:40:26,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:40:26,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:40:26,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:40:26,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:40:26,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:40:26,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:40:26,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:40:26,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:40:26,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:40:26,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:40:26,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:40:26,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:40:26,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:40:26,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:40:26,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:40:26,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:40:26,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:40:26,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:40:26,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:40:26,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:40:26,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:40:26,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:40:26,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:40:26,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:40:26,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:40:26,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:40:26,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:40:26,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:40:26,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:40:26,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:40:26,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:40:26,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:40:26,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:40:26,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:40:26,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:40:26,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:40:26,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:40:26,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:40:26,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:40:26,353 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 04:40:26,373 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:40:26,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:40:26,373 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:40:26,373 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:40:26,374 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:40:26,374 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:40:26,375 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:40:26,375 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:40:26,375 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:40:26,375 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:40:26,375 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:40:26,375 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:40:26,375 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:40:26,376 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:40:26,376 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:40:26,376 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:40:26,376 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:40:26,376 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:40:26,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:40:26,377 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 04:40:26,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:40:26,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 04:40:26,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:40:26,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:40:26,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:40:26,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:40:26,378 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 04:40:26,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:40:26,379 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:40:26,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:40:26,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:40:26,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:40:26,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:40:26,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:40:26,380 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:40:26,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:40:26,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:40:26,380 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:40:26,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:40:26,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:40:26,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:40:26,380 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_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24df3a04bdb7e751c4f0d163e80822f74241222ac6f56a91a0bf72df65694e1b [2022-12-14 04:40:26,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:40:26,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:40:26,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:40:26,597 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:40:26,597 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:40:26,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/combinations/gcd_1+newton_2_8.i [2022-12-14 04:40:29,141 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:40:29,257 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:40:29,258 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/sv-benchmarks/c/combinations/gcd_1+newton_2_8.i [2022-12-14 04:40:29,262 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/data/ddf536353/79607014f5e243af87d471a5e90f3018/FLAG8832d6e23 [2022-12-14 04:40:29,273 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/data/ddf536353/79607014f5e243af87d471a5e90f3018 [2022-12-14 04:40:29,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:40:29,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:40:29,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:40:29,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:40:29,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:40:29,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:40:29" (1/1) ... [2022-12-14 04:40:29,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@739c7f65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:40:29, skipping insertion in model container [2022-12-14 04:40:29,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:40:29" (1/1) ... [2022-12-14 04:40:29,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:40:29,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:40:29,400 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/sv-benchmarks/c/combinations/gcd_1+newton_2_8.i[1226,1239] [2022-12-14 04:40:29,415 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/sv-benchmarks/c/combinations/gcd_1+newton_2_8.i[2807,2820] [2022-12-14 04:40:29,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:40:29,424 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:40:29,433 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/sv-benchmarks/c/combinations/gcd_1+newton_2_8.i[1226,1239] [2022-12-14 04:40:29,440 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/sv-benchmarks/c/combinations/gcd_1+newton_2_8.i[2807,2820] [2022-12-14 04:40:29,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:40:29,451 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:40:29,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:40:29 WrapperNode [2022-12-14 04:40:29,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:40:29,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:40:29,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:40:29,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:40:29,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:40:29" (1/1) ... [2022-12-14 04:40:29,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:40:29" (1/1) ... [2022-12-14 04:40:29,477 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2022-12-14 04:40:29,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:40:29,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:40:29,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:40:29,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:40:29,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:40:29" (1/1) ... [2022-12-14 04:40:29,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:40:29" (1/1) ... [2022-12-14 04:40:29,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:40:29" (1/1) ... [2022-12-14 04:40:29,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:40:29" (1/1) ... [2022-12-14 04:40:29,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:40:29" (1/1) ... [2022-12-14 04:40:29,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:40:29" (1/1) ... [2022-12-14 04:40:29,493 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:40:29" (1/1) ... [2022-12-14 04:40:29,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:40:29" (1/1) ... [2022-12-14 04:40:29,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:40:29,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:40:29,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:40:29,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:40:29,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:40:29" (1/1) ... [2022-12-14 04:40:29,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:40:29,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:40:29,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:40:29,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:40:29,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:40:29,556 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-12-14 04:40:29,556 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-12-14 04:40:29,557 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-12-14 04:40:29,557 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-12-14 04:40:29,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 04:40:29,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:40:29,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:40:29,619 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:40:29,620 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:40:29,749 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:40:29,794 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:40:29,794 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 04:40:29,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:40:29 BoogieIcfgContainer [2022-12-14 04:40:29,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:40:29,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:40:29,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:40:29,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:40:29,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:40:29" (1/3) ... [2022-12-14 04:40:29,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a96dea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:40:29, skipping insertion in model container [2022-12-14 04:40:29,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:40:29" (2/3) ... [2022-12-14 04:40:29,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a96dea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:40:29, skipping insertion in model container [2022-12-14 04:40:29,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:40:29" (3/3) ... [2022-12-14 04:40:29,805 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_2_8.i [2022-12-14 04:40:29,820 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:40:29,821 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 04:40:29,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:40:29,863 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;@7083bc21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:40:29,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 04:40:29,867 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 04:40:29,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 04:40:29,875 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:40:29,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 04:40:29,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:40:29,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:40:29,881 INFO L85 PathProgramCache]: Analyzing trace with hash -592026431, now seen corresponding path program 1 times [2022-12-14 04:40:29,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:40:29,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976935305] [2022-12-14 04:40:29,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:40:29,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:40:29,957 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 04:40:29,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832060672] [2022-12-14 04:40:29,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:40:29,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:40:29,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:40:29,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:40:29,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 04:40:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:40:30,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 04:40:30,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:40:30,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:40:30,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:40:30,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:40:30,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976935305] [2022-12-14 04:40:30,105 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 04:40:30,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832060672] [2022-12-14 04:40:30,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832060672] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:40:30,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:40:30,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:40:30,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545091160] [2022-12-14 04:40:30,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:40:30,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:40:30,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:40:30,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:40:30,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:40:30,143 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2022-12-14 04:40:30,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:40:30,181 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2022-12-14 04:40:30,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:40:30,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 [2022-12-14 04:40:30,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:40:30,188 INFO L225 Difference]: With dead ends: 34 [2022-12-14 04:40:30,188 INFO L226 Difference]: Without dead ends: 21 [2022-12-14 04:40:30,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:40:30,192 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:40:30,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:40:30,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-14 04:40:30,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-12-14 04:40:30,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 04:40:30,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-12-14 04:40:30,218 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 6 [2022-12-14 04:40:30,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:40:30,218 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-12-14 04:40:30,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2022-12-14 04:40:30,218 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-12-14 04:40:30,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 04:40:30,219 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:40:30,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:40:30,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 04:40:30,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:40:30,422 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:40:30,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:40:30,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1175005777, now seen corresponding path program 1 times [2022-12-14 04:40:30,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:40:30,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090198341] [2022-12-14 04:40:30,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:40:30,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:40:30,492 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 04:40:30,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555739187] [2022-12-14 04:40:30,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:40:30,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:40:30,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:40:30,498 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:40:30,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 04:40:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:40:30,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 04:40:30,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:40:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:40:30,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:40:30,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:40:30,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:40:30,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090198341] [2022-12-14 04:40:30,686 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 04:40:30,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555739187] [2022-12-14 04:40:30,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555739187] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:40:30,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [275733220] [2022-12-14 04:40:30,700 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-12-14 04:40:30,700 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:40:30,703 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:40:30,707 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:40:30,707 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:40:30,883 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:40:31,133 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '167#(and (= |ULTIMATE.start_gcd_test_~b#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_main1_~y~0#1|) 1 0)) (<= 0 (+ |ULTIMATE.start_gcd_test_#res#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) (<= 0 |ULTIMATE.start_main1_~y~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_gcd_test_#in~b#1|) (<= 0 (+ |ULTIMATE.start_gcd_test_#in~a#1| 128)) (<= 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|) (<= |ULTIMATE.start_main1_~y~0#1| 127) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 04:40:31,134 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 04:40:31,134 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 04:40:31,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-12-14 04:40:31,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704538128] [2022-12-14 04:40:31,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 04:40:31,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 04:40:31,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:40:31,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 04:40:31,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-12-14 04:40:31,136 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 8 states, 8 states have (on average 1.375) 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) [2022-12-14 04:40:31,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:40:31,179 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-12-14 04:40:31,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 04:40:31,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) 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) Word has length 7 [2022-12-14 04:40:31,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:40:31,179 INFO L225 Difference]: With dead ends: 25 [2022-12-14 04:40:31,179 INFO L226 Difference]: Without dead ends: 22 [2022-12-14 04:40:31,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-12-14 04:40:31,181 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:40:31,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 57 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:40:31,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-14 04:40:31,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-14 04:40:31,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 04:40:31,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-12-14 04:40:31,186 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 7 [2022-12-14 04:40:31,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:40:31,187 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-12-14 04:40:31,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) 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) [2022-12-14 04:40:31,187 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-12-14 04:40:31,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 04:40:31,188 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:40:31,188 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 04:40:31,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 04:40:31,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:40:31,390 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:40:31,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:40:31,391 INFO L85 PathProgramCache]: Analyzing trace with hash -2067496319, now seen corresponding path program 2 times [2022-12-14 04:40:31,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:40:31,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700853772] [2022-12-14 04:40:31,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:40:31,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:40:31,426 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 04:40:31,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054988549] [2022-12-14 04:40:31,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 04:40:31,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:40:31,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:40:31,432 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:40:31,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 04:40:42,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 04:40:42,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:40:42,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-14 04:40:42,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:41:03,864 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:41:17,025 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 47 DAG size of output: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:41:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:41:34,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:42:33,091 WARN L837 $PredicateComparison]: unable to prove that (or (let ((.cse32 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse19 (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (.cse33 (mod (+ .cse32 |c_ULTIMATE.start_gcd_test_~b#1|) 256)) (.cse34 (mod (+ .cse32 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256))) (let ((.cse18 (mod .cse32 256)) (.cse5 (< |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse9 (<= .cse34 127)) (.cse0 (<= .cse33 127)) (.cse25 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse33) 256) 0))) (.cse27 (= .cse33 0)) (.cse28 (= |c_ULTIMATE.start_main1_~y~0#1| .cse33)) (.cse29 (= .cse34 0)) (.cse30 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse34) 256) 0))) (.cse13 (not .cse19)) (.cse31 (= |c_ULTIMATE.start_main1_~y~0#1| .cse34)) (.cse20 (+ |c_ULTIMATE.start_main1_~y~0#1| 256))) (let ((.cse11 (= .cse34 .cse20)) (.cse12 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse34)) 256) 0))) (.cse6 (or .cse29 .cse30 .cse13 .cse31)) (.cse17 (or .cse25 .cse13 .cse27 .cse28)) (.cse3 (not .cse0)) (.cse8 (not .cse9)) (.cse14 (not .cse5)) (.cse15 (= .cse33 .cse20)) (.cse16 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse33)) 256) 0))) (.cse21 (<= .cse18 127))) (and (or (let ((.cse7 (or (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse18)) 256) 0)) .cse19 (= .cse18 .cse20)))) (let ((.cse4 (or .cse14 (and .cse17 .cse7))) (.cse1 (or .cse14 (and .cse7 (or .cse15 .cse16 .cse13))))) (and (or (let ((.cse2 (or .cse5 (and .cse6 .cse7)))) (and (or .cse0 (and .cse1 .cse2)) (or .cse3 (and .cse4 .cse2)))) .cse8) (or .cse9 (let ((.cse10 (or (and .cse7 (or .cse11 .cse12 .cse13)) .cse5))) (and (or .cse3 (and .cse10 .cse4)) (or .cse0 (and .cse10 .cse1)))))))) .cse21) (or (let ((.cse24 (or .cse19 (= |c_ULTIMATE.start_main1_~y~0#1| .cse18) (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse18) 256) 0)) (= .cse18 0))) (.cse26 (= .cse32 0))) (let ((.cse22 (or .cse14 (and .cse24 (or .cse26 .cse15 .cse16 .cse13))))) (and (or .cse9 (let ((.cse23 (or (and .cse24 (or .cse26 .cse11 .cse12 .cse13)) .cse5))) (and (or (and .cse22 .cse23) .cse0) (or (and (or .cse14 (and .cse24 (or .cse25 .cse26 .cse13 .cse27 .cse28))) .cse23) .cse3)))) (or (and (or (and (or (and .cse6 .cse24) .cse5) (or .cse14 (and .cse24 .cse17))) .cse3) (or .cse0 (and (or (and .cse24 (or .cse26 .cse29 .cse30 .cse13 .cse31)) .cse5) .cse22))) .cse8)))) (not .cse21))))))) (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) is different from false [2022-12-14 04:44:29,613 WARN L233 SmtUtils]: Spent 1.19m on a formula simplification. DAG size of input: 45 DAG size of output: 41 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:45:17,535 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main1_~y~0#1_12| Int) (|v_ULTIMATE.start_main1_~x~0#1_7| Int)) (let ((.cse0 (mod (mod (mod (* 255 |v_ULTIMATE.start_main1_~x~0#1_7|) 256) |v_ULTIMATE.start_main1_~y~0#1_12|) 256))) (or (not (= 0 (mod (mod |v_ULTIMATE.start_main1_~y~0#1_12| .cse0) 256))) (<= 0 |v_ULTIMATE.start_main1_~x~0#1_7|) (< (+ 128 |v_ULTIMATE.start_main1_~x~0#1_7|) 0) (<= |v_ULTIMATE.start_main1_~y~0#1_12| 0) (not (= (mod |v_ULTIMATE.start_main1_~x~0#1_7| |v_ULTIMATE.start_main1_~y~0#1_12|) 0)) (= .cse0 0)))) is different from false [2022-12-14 04:45:19,539 WARN L859 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main1_~y~0#1_12| Int) (|v_ULTIMATE.start_main1_~x~0#1_7| Int)) (let ((.cse0 (mod (mod (mod (* 255 |v_ULTIMATE.start_main1_~x~0#1_7|) 256) |v_ULTIMATE.start_main1_~y~0#1_12|) 256))) (or (not (= 0 (mod (mod |v_ULTIMATE.start_main1_~y~0#1_12| .cse0) 256))) (<= 0 |v_ULTIMATE.start_main1_~x~0#1_7|) (< (+ 128 |v_ULTIMATE.start_main1_~x~0#1_7|) 0) (<= |v_ULTIMATE.start_main1_~y~0#1_12| 0) (not (= (mod |v_ULTIMATE.start_main1_~x~0#1_7| |v_ULTIMATE.start_main1_~y~0#1_12|) 0)) (= .cse0 0)))) is different from true [2022-12-14 04:45:19,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-14 04:45:19,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:19,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700853772] [2022-12-14 04:45:19,540 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 04:45:19,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054988549] [2022-12-14 04:45:19,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054988549] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:45:19,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [351031247] [2022-12-14 04:45:19,542 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-12-14 04:45:19,542 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:45:19,542 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:45:19,542 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:45:19,542 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:45:20,400 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:45:37,432 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '292#(and (= |ULTIMATE.start_gcd_test_~b#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_main1_~y~0#1|) 1 0)) (<= 0 (+ |ULTIMATE.start_gcd_test_#res#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) (<= 0 |ULTIMATE.start_main1_~y~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_gcd_test_#in~b#1|) (<= 0 (+ |ULTIMATE.start_gcd_test_#in~a#1| 128)) (<= 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|) (<= |ULTIMATE.start_main1_~y~0#1| 127) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 04:45:37,432 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 04:45:37,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 04:45:37,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2022-12-14 04:45:37,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294820915] [2022-12-14 04:45:37,433 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 04:45:37,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 04:45:37,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:37,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 04:45:37,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=133, Unknown=16, NotChecked=50, Total=240 [2022-12-14 04:45:37,434 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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) [2022-12-14 04:45:39,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 04:46:36,733 WARN L233 SmtUtils]: Spent 47.26s on a formula simplification. DAG size of input: 46 DAG size of output: 30 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:46:38,765 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (< 0 |c_ULTIMATE.start_main1_~y~0#1|))) (and (<= |c_ULTIMATE.start_main1_~x~0#1| 127) .cse0 (<= 0 (+ 128 |c_ULTIMATE.start_main1_~x~0#1|)) (<= |c_ULTIMATE.start_main1_~y~0#1| 127) (= |c_ULTIMATE.start_main1_~y~0#1| |c_ULTIMATE.start_gcd_test_~b#1|) (or (not (= (mod |c_ULTIMATE.start_main1_~x~0#1| |c_ULTIMATE.start_main1_~y~0#1|) 0)) (let ((.cse3 (mod (* 255 |c_ULTIMATE.start_main1_~x~0#1|) 256))) (let ((.cse2 (<= .cse3 127))) (and (let ((.cse1 (mod (+ .cse3 (- 256)) |c_ULTIMATE.start_main1_~y~0#1|))) (or (not (= (mod (mod |c_ULTIMATE.start_main1_~y~0#1| (+ (- 256) (mod (+ .cse1 (* |c_ULTIMATE.start_main1_~y~0#1| 255)) 256))) 256) 0)) .cse2 (= .cse1 0))) (let ((.cse4 (mod (mod .cse3 |c_ULTIMATE.start_main1_~y~0#1|) 256))) (or (not .cse2) (not (= (mod (mod |c_ULTIMATE.start_main1_~y~0#1| .cse4) 256) 0)) (= .cse4 0)))))) (not .cse0) (not (< |c_ULTIMATE.start_main1_~x~0#1| 0))) (or (exists ((|ULTIMATE.start_gcd_test_#in~a#1| Int)) (let ((.cse5 (mod (* 255 |ULTIMATE.start_gcd_test_#in~a#1|) 256))) (and (< |ULTIMATE.start_gcd_test_#in~a#1| 0) (<= 0 (+ |ULTIMATE.start_gcd_test_#in~a#1| 128)) (not (<= .cse5 127)) (= (mod |ULTIMATE.start_gcd_test_#in~a#1| |c_ULTIMATE.start_main1_~y~0#1|) 0) (= (+ |c_ULTIMATE.start_gcd_test_~a#1| 256) .cse5)))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| 127) (<= 0 |c_ULTIMATE.start_gcd_test_~a#1|) (= (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_main1_~y~0#1|) 0)) (exists ((|ULTIMATE.start_gcd_test_#in~a#1| Int)) (let ((.cse6 (mod (* 255 |ULTIMATE.start_gcd_test_#in~a#1|) 256))) (and (< |ULTIMATE.start_gcd_test_#in~a#1| 0) (<= 0 (+ |ULTIMATE.start_gcd_test_#in~a#1| 128)) (<= .cse6 127) (= (mod |ULTIMATE.start_gcd_test_#in~a#1| |c_ULTIMATE.start_main1_~y~0#1|) 0) (= |c_ULTIMATE.start_gcd_test_~a#1| .cse6))))) (or (let ((.cse39 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse26 (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (.cse40 (mod (+ .cse39 |c_ULTIMATE.start_gcd_test_~b#1|) 256)) (.cse41 (mod (+ .cse39 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256))) (let ((.cse25 (mod .cse39 256)) (.cse12 (< |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse16 (<= .cse41 127)) (.cse7 (<= .cse40 127)) (.cse32 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse40) 256) 0))) (.cse34 (= .cse40 0)) (.cse35 (= |c_ULTIMATE.start_main1_~y~0#1| .cse40)) (.cse36 (= .cse41 0)) (.cse37 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse41) 256) 0))) (.cse20 (not .cse26)) (.cse38 (= |c_ULTIMATE.start_main1_~y~0#1| .cse41)) (.cse27 (+ |c_ULTIMATE.start_main1_~y~0#1| 256))) (let ((.cse18 (= .cse41 .cse27)) (.cse19 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse41)) 256) 0))) (.cse13 (or .cse36 .cse37 .cse20 .cse38)) (.cse24 (or .cse32 .cse20 .cse34 .cse35)) (.cse10 (not .cse7)) (.cse15 (not .cse16)) (.cse21 (not .cse12)) (.cse22 (= .cse40 .cse27)) (.cse23 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse40)) 256) 0))) (.cse28 (<= .cse25 127))) (and (or (let ((.cse14 (or (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse25)) 256) 0)) .cse26 (= .cse25 .cse27)))) (let ((.cse11 (or .cse21 (and .cse24 .cse14))) (.cse8 (or .cse21 (and .cse14 (or .cse22 .cse23 .cse20))))) (and (or (let ((.cse9 (or .cse12 (and .cse13 .cse14)))) (and (or .cse7 (and .cse8 .cse9)) (or .cse10 (and .cse11 .cse9)))) .cse15) (or .cse16 (let ((.cse17 (or (and .cse14 (or .cse18 .cse19 .cse20)) .cse12))) (and (or .cse10 (and .cse17 .cse11)) (or .cse7 (and .cse17 .cse8)))))))) .cse28) (or (let ((.cse31 (or .cse26 (= |c_ULTIMATE.start_main1_~y~0#1| .cse25) (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse25) 256) 0)) (= .cse25 0))) (.cse33 (= .cse39 0))) (let ((.cse29 (or .cse21 (and .cse31 (or .cse33 .cse22 .cse23 .cse20))))) (and (or .cse16 (let ((.cse30 (or (and .cse31 (or .cse33 .cse18 .cse19 .cse20)) .cse12))) (and (or (and .cse29 .cse30) .cse7) (or (and (or .cse21 (and .cse31 (or .cse32 .cse33 .cse20 .cse34 .cse35))) .cse30) .cse10)))) (or (and (or (and (or (and .cse13 .cse31) .cse12) (or .cse21 (and .cse31 .cse24))) .cse10) (or .cse7 (and (or (and .cse31 (or .cse33 .cse36 .cse37 .cse20 .cse38)) .cse12) .cse29))) .cse15)))) (not .cse28))))))) (= |c_ULTIMATE.start_gcd_test_~b#1| 0)))) is different from false [2022-12-14 04:47:12,019 WARN L233 SmtUtils]: Spent 24.37s on a formula simplification. DAG size of input: 37 DAG size of output: 31 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:47:14,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 04:47:14,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:14,124 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-12-14 04:47:14,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 04:47:14,127 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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 8 [2022-12-14 04:47:14,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:14,127 INFO L225 Difference]: With dead ends: 22 [2022-12-14 04:47:14,127 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 04:47:14,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 218.1s TimeCoverageRelationStatistics Valid=52, Invalid=177, Unknown=23, NotChecked=90, Total=342 [2022-12-14 04:47:14,128 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:14,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 108 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 1 Unknown, 28 Unchecked, 4.2s Time] [2022-12-14 04:47:14,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 04:47:14,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 04:47:14,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 04:47:14,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-12-14 04:47:14,131 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 8 [2022-12-14 04:47:14,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:14,131 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-12-14 04:47:14,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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) [2022-12-14 04:47:14,131 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-12-14 04:47:14,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 04:47:14,131 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:14,132 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:14,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 04:47:14,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:47:14,333 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:47:14,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:14,334 INFO L85 PathProgramCache]: Analyzing trace with hash -308762613, now seen corresponding path program 1 times [2022-12-14 04:47:14,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:14,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364890556] [2022-12-14 04:47:14,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:14,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 04:47:14,350 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 04:47:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 04:47:14,374 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 04:47:14,374 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 04:47:14,375 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-14 04:47:14,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-12-14 04:47:14,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 04:47:14,378 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-12-14 04:47:14,380 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 04:47:14,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:47:14 BoogieIcfgContainer [2022-12-14 04:47:14,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 04:47:14,393 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 04:47:14,393 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 04:47:14,393 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 04:47:14,394 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:40:29" (3/4) ... [2022-12-14 04:47:14,396 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 04:47:14,396 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 04:47:14,396 INFO L158 Benchmark]: Toolchain (without parser) took 405120.56ms. Allocated memory was 190.8MB in the beginning and 241.2MB in the end (delta: 50.3MB). Free memory was 148.6MB in the beginning and 141.3MB in the end (delta: 7.3MB). Peak memory consumption was 59.7MB. Max. memory is 16.1GB. [2022-12-14 04:47:14,396 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 109.1MB. Free memory is still 82.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 04:47:14,397 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.80ms. Allocated memory is still 190.8MB. Free memory was 148.6MB in the beginning and 137.4MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 04:47:14,397 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.51ms. Allocated memory is still 190.8MB. Free memory was 137.4MB in the beginning and 135.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 04:47:14,397 INFO L158 Benchmark]: Boogie Preprocessor took 17.36ms. Allocated memory is still 190.8MB. Free memory was 135.3MB in the beginning and 133.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 04:47:14,397 INFO L158 Benchmark]: RCFGBuilder took 300.33ms. Allocated memory is still 190.8MB. Free memory was 133.9MB in the beginning and 117.8MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 04:47:14,397 INFO L158 Benchmark]: TraceAbstraction took 404594.43ms. Allocated memory was 190.8MB in the beginning and 241.2MB in the end (delta: 50.3MB). Free memory was 117.1MB in the beginning and 141.3MB in the end (delta: -24.2MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2022-12-14 04:47:14,398 INFO L158 Benchmark]: Witness Printer took 2.51ms. Allocated memory is still 241.2MB. Free memory is still 141.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 04:47:14,399 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 109.1MB. Free memory is still 82.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 174.80ms. Allocated memory is still 190.8MB. Free memory was 148.6MB in the beginning and 137.4MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.51ms. Allocated memory is still 190.8MB. Free memory was 137.4MB in the beginning and 135.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.36ms. Allocated memory is still 190.8MB. Free memory was 135.3MB in the beginning and 133.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 300.33ms. Allocated memory is still 190.8MB. Free memory was 133.9MB in the beginning and 117.8MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 404594.43ms. Allocated memory was 190.8MB in the beginning and 241.2MB in the end (delta: 50.3MB). Free memory was 117.1MB in the beginning and 141.3MB in the end (delta: -24.2MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. * Witness Printer took 2.51ms. Allocated memory is still 241.2MB. Free memory is still 141.3MB. 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: 102]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 95. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L93] CALL, EXPR f(IN) VAL [\old(x)=111] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L93] RET, EXPR f(IN) VAL [f(IN)=109, IN=111] [L93] CALL, EXPR fp(IN) VAL [\old(x)=111] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L93] RET, EXPR fp(IN) VAL [f(IN)=109, fp(IN)=114, IN=111] [L93] float x = IN - f(IN)/fp(IN); [L95] CALL, EXPR f(x) VAL [\old(x)=112] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L95] RET, EXPR f(x) VAL [f(x)=110, IN=111, x=112] [L95] CALL, EXPR fp(x) VAL [\old(x)=112] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L95] RET, EXPR fp(x) VAL [f(x)=110, fp(x)=113, IN=111, x=112] [L95] x = x - f(x)/fp(x) [L101] COND TRUE !(x < 0.1) VAL [IN=111] [L102] reach_error() VAL [IN=111] - 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, 25 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 404.5s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 96.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 203 SdHoareTripleChecker+Invalid, 4.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 28 IncrementalHoareTripleChecker+Unchecked, 157 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 78 IncrementalHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 46 mSDtfsCounter, 78 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 218.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 10.9s SatisfiabilityAnalysisTime, 277.4s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 31 ConstructedInterpolants, 3 QuantifiedInterpolants, 1705 SizeOfPredicates, 14 NumberOfNonLiveVariables, 237 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 2/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 04:47:14,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_2_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh --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 24df3a04bdb7e751c4f0d163e80822f74241222ac6f56a91a0bf72df65694e1b --- 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-2329fc7 [2022-12-14 04:47:15,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:47:15,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:47:15,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:47:15,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:47:15,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:47:15,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:47:15,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:47:15,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:47:15,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:47:15,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:47:15,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:47:15,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:47:15,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:47:15,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:47:15,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:47:15,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:47:15,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:47:15,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:47:15,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:47:15,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:47:15,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:47:15,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:47:15,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:47:15,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:47:15,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:47:15,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:47:15,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:47:15,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:47:15,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:47:15,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:47:15,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:47:15,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:47:15,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:47:15,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:47:15,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:47:15,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:47:15,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:47:15,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:47:15,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:47:15,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:47:16,001 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 04:47:16,025 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:47:16,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:47:16,026 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:47:16,026 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:47:16,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:47:16,027 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:47:16,028 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:47:16,028 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:47:16,028 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:47:16,028 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:47:16,029 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:47:16,029 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:47:16,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:47:16,030 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 04:47:16,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 04:47:16,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:47:16,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:47:16,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:47:16,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:47:16,031 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 04:47:16,031 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 04:47:16,031 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 04:47:16,031 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 04:47:16,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:47:16,031 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:47:16,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:47:16,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:47:16,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 04:47:16,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:47:16,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:47:16,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:47:16,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:47:16,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:47:16,037 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 04:47:16,038 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 04:47:16,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:47:16,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:47:16,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 04:47:16,038 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_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24df3a04bdb7e751c4f0d163e80822f74241222ac6f56a91a0bf72df65694e1b [2022-12-14 04:47:16,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:47:16,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:47:16,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:47:16,297 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:47:16,298 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:47:16,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/combinations/gcd_1+newton_2_8.i [2022-12-14 04:47:18,757 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:47:18,946 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:47:18,946 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/sv-benchmarks/c/combinations/gcd_1+newton_2_8.i [2022-12-14 04:47:18,953 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/data/18d489a76/69afcedcc30741ebba587efefacf9765/FLAG93a3c43a9 [2022-12-14 04:47:18,967 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/data/18d489a76/69afcedcc30741ebba587efefacf9765 [2022-12-14 04:47:18,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:47:18,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:47:18,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:47:18,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:47:18,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:47:18,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:47:18" (1/1) ... [2022-12-14 04:47:18,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e763e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:18, skipping insertion in model container [2022-12-14 04:47:18,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:47:18" (1/1) ... [2022-12-14 04:47:18,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:47:19,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:47:19,143 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/sv-benchmarks/c/combinations/gcd_1+newton_2_8.i[1226,1239] [2022-12-14 04:47:19,167 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/sv-benchmarks/c/combinations/gcd_1+newton_2_8.i[2807,2820] [2022-12-14 04:47:19,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:47:19,181 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:47:19,195 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/sv-benchmarks/c/combinations/gcd_1+newton_2_8.i[1226,1239] [2022-12-14 04:47:19,205 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/sv-benchmarks/c/combinations/gcd_1+newton_2_8.i[2807,2820] [2022-12-14 04:47:19,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:47:19,221 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:47:19,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:19 WrapperNode [2022-12-14 04:47:19,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:47:19,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:47:19,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:47:19,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:47:19,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:19" (1/1) ... [2022-12-14 04:47:19,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:19" (1/1) ... [2022-12-14 04:47:19,259 INFO L138 Inliner]: procedures = 28, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 80 [2022-12-14 04:47:19,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:47:19,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:47:19,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:47:19,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:47:19,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:19" (1/1) ... [2022-12-14 04:47:19,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:19" (1/1) ... [2022-12-14 04:47:19,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:19" (1/1) ... [2022-12-14 04:47:19,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:19" (1/1) ... [2022-12-14 04:47:19,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:19" (1/1) ... [2022-12-14 04:47:19,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:19" (1/1) ... [2022-12-14 04:47:19,287 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:19" (1/1) ... [2022-12-14 04:47:19,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:19" (1/1) ... [2022-12-14 04:47:19,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:47:19,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:47:19,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:47:19,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:47:19,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:19" (1/1) ... [2022-12-14 04:47:19,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:47:19,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:47:19,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:47:19,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:47:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:47:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 04:47:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-12-14 04:47:19,364 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-12-14 04:47:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-12-14 04:47:19,365 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-12-14 04:47:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:47:19,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:47:19,435 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:47:19,437 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:47:27,257 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:47:27,263 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:47:27,263 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 04:47:27,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:47:27 BoogieIcfgContainer [2022-12-14 04:47:27,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:47:27,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:47:27,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:47:27,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:47:27,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:47:18" (1/3) ... [2022-12-14 04:47:27,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adf9b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:47:27, skipping insertion in model container [2022-12-14 04:47:27,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:19" (2/3) ... [2022-12-14 04:47:27,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adf9b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:47:27, skipping insertion in model container [2022-12-14 04:47:27,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:47:27" (3/3) ... [2022-12-14 04:47:27,273 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_2_8.i [2022-12-14 04:47:27,290 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:47:27,290 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 04:47:27,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:47:27,333 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;@41db5a16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:47:27,334 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 04:47:27,336 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 04:47:27,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 04:47:27,342 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:27,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:27,343 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:47:27,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:27,348 INFO L85 PathProgramCache]: Analyzing trace with hash -247750664, now seen corresponding path program 1 times [2022-12-14 04:47:27,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:47:27,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259174619] [2022-12-14 04:47:27,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:27,357 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 [2022-12-14 04:47:27,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:47:27,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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) [2022-12-14 04:47:27,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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 [2022-12-14 04:47:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:27,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 04:47:27,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:47:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:47:27,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:47:27,453 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:47:27,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259174619] [2022-12-14 04:47:27,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259174619] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:27,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:27,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:47:27,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220922842] [2022-12-14 04:47:27,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:27,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 04:47:27,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:47:27,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 04:47:27,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 04:47:27,480 INFO L87 Difference]: Start difference. First operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2022-12-14 04:47:27,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:27,495 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2022-12-14 04:47:27,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 04:47:27,497 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 [2022-12-14 04:47:27,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:27,501 INFO L225 Difference]: With dead ends: 66 [2022-12-14 04:47:27,502 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 04:47:27,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 04:47:27,506 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:27,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:47:27,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 04:47:27,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-14 04:47:27,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 04:47:27,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-12-14 04:47:27,532 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 11 [2022-12-14 04:47:27,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:27,532 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-12-14 04:47:27,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2022-12-14 04:47:27,532 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-12-14 04:47:27,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 04:47:27,533 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:27,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:27,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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 [2022-12-14 04:47:27,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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 [2022-12-14 04:47:27,736 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:47:27,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:27,738 INFO L85 PathProgramCache]: Analyzing trace with hash -251444748, now seen corresponding path program 1 times [2022-12-14 04:47:27,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:47:27,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112368006] [2022-12-14 04:47:27,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:27,742 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 [2022-12-14 04:47:27,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:47:27,745 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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) [2022-12-14 04:47:27,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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 [2022-12-14 04:47:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:27,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 04:47:27,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:47:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:47:27,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:47:27,974 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:47:27,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112368006] [2022-12-14 04:47:27,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112368006] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:27,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:27,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:47:27,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969240032] [2022-12-14 04:47:27,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:27,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:47:27,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:47:27,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:47:27,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:47:27,977 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. 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) [2022-12-14 04:47:28,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:28,024 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-12-14 04:47:28,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:47:28,024 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 [2022-12-14 04:47:28,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:28,025 INFO L225 Difference]: With dead ends: 36 [2022-12-14 04:47:28,025 INFO L226 Difference]: Without dead ends: 30 [2022-12-14 04:47:28,025 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 [2022-12-14 04:47:28,026 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:28,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:47:28,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-12-14 04:47:28,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-12-14 04:47:28,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 04:47:28,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-12-14 04:47:28,030 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2022-12-14 04:47:28,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:28,031 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-12-14 04:47:28,031 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) [2022-12-14 04:47:28,031 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-12-14 04:47:28,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 04:47:28,031 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:28,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:28,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 04:47:28,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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 [2022-12-14 04:47:28,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:47:28,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:28,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1673157840, now seen corresponding path program 1 times [2022-12-14 04:47:28,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:47:28,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827492353] [2022-12-14 04:47:28,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:28,238 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 [2022-12-14 04:47:28,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:47:28,240 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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) [2022-12-14 04:47:28,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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 [2022-12-14 04:47:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:28,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 04:47:28,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:47:28,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:47:28,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:47:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:47:28,728 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:47:28,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827492353] [2022-12-14 04:47:28,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827492353] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:47:28,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1748472644] [2022-12-14 04:47:28,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:28,728 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 04:47:28,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 04:47:28,755 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 04:47:28,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-12-14 04:47:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:28,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 04:47:28,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:47:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:47:29,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:47:29,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:47:29,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1748472644] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:47:29,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382155419] [2022-12-14 04:47:29,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:29,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:47:29,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:47:29,167 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:47:29,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 04:47:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:29,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 04:47:29,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:47:29,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:47:29,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:47:29,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:47:29,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382155419] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:47:29,867 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 04:47:29,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 7] total 11 [2022-12-14 04:47:29,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015783295] [2022-12-14 04:47:29,868 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 04:47:29,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 04:47:29,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:47:29,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 04:47:29,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-14 04:47:29,870 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 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) [2022-12-14 04:47:30,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:30,352 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-12-14 04:47:30,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 04:47:30,353 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 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 [2022-12-14 04:47:30,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:30,354 INFO L225 Difference]: With dead ends: 36 [2022-12-14 04:47:30,354 INFO L226 Difference]: Without dead ends: 31 [2022-12-14 04:47:30,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-12-14 04:47:30,356 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 8 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:30,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 178 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:47:30,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-14 04:47:30,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-12-14 04:47:30,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 04:47:30,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-12-14 04:47:30,361 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 12 [2022-12-14 04:47:30,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:30,361 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-12-14 04:47:30,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 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) [2022-12-14 04:47:30,362 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-12-14 04:47:30,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 04:47:30,362 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:30,363 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:30,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 04:47:30,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 04:47:30,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2022-12-14 04:47:30,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 04:47:30,966 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:47:30,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:30,967 INFO L85 PathProgramCache]: Analyzing trace with hash -276630798, now seen corresponding path program 2 times [2022-12-14 04:47:30,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:47:30,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017240550] [2022-12-14 04:47:30,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 04:47:30,969 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 [2022-12-14 04:47:30,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:47:30,971 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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) [2022-12-14 04:47:30,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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)] Waiting until timeout for monitored process [2022-12-14 04:47:32,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 04:47:32,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:47:32,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 04:47:32,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:47:34,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:47:34,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:47:43,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:47:43,706 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:47:43,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017240550] [2022-12-14 04:47:43,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017240550] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:47:43,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [848645282] [2022-12-14 04:47:43,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 04:47:43,707 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 04:47:43,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 04:47:43,708 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 04:47:43,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-12-14 04:47:44,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 04:47:44,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:47:44,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 04:47:44,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:47:46,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:47:46,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:47:53,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:47:53,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [848645282] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:47:53,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879303121] [2022-12-14 04:47:53,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 04:47:53,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:47:53,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:47:53,714 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:47:53,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 04:47:55,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 04:47:55,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:47:55,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 04:47:55,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:47:58,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:47:58,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:48:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:48:06,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879303121] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:48:06,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 04:48:06,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 5, 9, 5, 10] total 16 [2022-12-14 04:48:06,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599739875] [2022-12-14 04:48:06,659 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 04:48:06,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 04:48:06,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:48:06,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 04:48:06,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-12-14 04:48:06,660 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 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) [2022-12-14 04:48:09,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 04:48:11,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 04:48:13,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 04:48:37,537 WARN L233 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 42 DAG size of output: 41 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:48:44,849 WARN L233 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 45 DAG size of output: 44 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:48:52,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:52,801 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2022-12-14 04:48:52,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 04:48:52,823 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 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 13 [2022-12-14 04:48:52,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:52,824 INFO L225 Difference]: With dead ends: 45 [2022-12-14 04:48:52,824 INFO L226 Difference]: Without dead ends: 33 [2022-12-14 04:48:52,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 59.1s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2022-12-14 04:48:52,825 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 32 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 14 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:52,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 248 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 64 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2022-12-14 04:48:52,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-12-14 04:48:52,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-12-14 04:48:52,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 04:48:52,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-12-14 04:48:52,830 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 13 [2022-12-14 04:48:52,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:52,830 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-12-14 04:48:52,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 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) [2022-12-14 04:48:52,831 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-12-14 04:48:52,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 04:48:52,831 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:52,832 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:48:52,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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)] Forceful destruction successful, exit code 0 [2022-12-14 04:48:53,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-14 04:48:53,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2022-12-14 04:48:53,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 04:48:53,436 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:48:53,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:53,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1495177164, now seen corresponding path program 1 times [2022-12-14 04:48:53,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:48:53,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125099329] [2022-12-14 04:48:53,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:53,439 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 [2022-12-14 04:48:53,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:48:53,441 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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) [2022-12-14 04:48:53,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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 (10)] Waiting until timeout for monitored process [2022-12-14 04:48:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:53,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 04:48:53,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:48:54,102 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 04:48:54,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:48:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 04:48:54,508 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:48:54,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125099329] [2022-12-14 04:48:54,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125099329] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:48:54,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1985861030] [2022-12-14 04:48:54,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:54,509 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 04:48:54,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 04:48:54,510 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 04:48:54,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-12-14 04:48:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:55,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 04:48:55,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:48:58,113 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 04:48:58,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:49:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:49:13,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1985861030] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:49:13,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562697453] [2022-12-14 04:49:13,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:13,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:49:13,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:49:13,631 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:49:13,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 04:49:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:14,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 04:49:14,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:49:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 04:49:15,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:49:30,488 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:49:30,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562697453] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:49:30,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 04:49:30,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5, 8, 5, 9] total 16 [2022-12-14 04:49:30,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939750271] [2022-12-14 04:49:30,489 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 04:49:30,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 04:49:30,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:49:30,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 04:49:30,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-12-14 04:49:30,490 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 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) [2022-12-14 04:49:30,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:49:30,861 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-12-14 04:49:30,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 04:49:30,880 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 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 15 [2022-12-14 04:49:30,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:49:30,881 INFO L225 Difference]: With dead ends: 33 [2022-12-14 04:49:30,881 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 04:49:30,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-12-14 04:49:30,882 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:49:30,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 04:49:30,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 04:49:30,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-12-14 04:49:30,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 04:49:30,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-12-14 04:49:30,885 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15 [2022-12-14 04:49:30,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:49:30,885 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-12-14 04:49:30,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 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) [2022-12-14 04:49:30,886 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-12-14 04:49:30,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 04:49:30,887 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:49:30,887 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:49:30,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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 (10)] Forceful destruction successful, exit code 0 [2022-12-14 04:49:31,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2022-12-14 04:49:31,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 04:49:31,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:49:31,491 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:49:31,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:31,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1535073882, now seen corresponding path program 1 times [2022-12-14 04:49:31,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:49:31,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714424571] [2022-12-14 04:49:31,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:31,494 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 [2022-12-14 04:49:31,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:49:31,497 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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) [2022-12-14 04:49:31,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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 (13)] Waiting until timeout for monitored process [2022-12-14 04:49:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 04:49:49,316 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 04:52:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 04:52:47,232 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 04:52:47,232 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 04:52:47,233 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-14 04:52:47,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-12-14 04:52:47,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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 (13)] Ended with exit code 0 [2022-12-14 04:52:47,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/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 [2022-12-14 04:52:47,444 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-12-14 04:52:47,448 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 04:52:47,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:52:47 BoogieIcfgContainer [2022-12-14 04:52:47,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 04:52:47,465 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 04:52:47,465 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 04:52:47,465 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 04:52:47,466 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:47:27" (3/4) ... [2022-12-14 04:52:47,467 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 04:52:47,490 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 04:52:47,490 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 04:52:47,491 INFO L158 Benchmark]: Toolchain (without parser) took 328520.33ms. Allocated memory is still 71.3MB. Free memory was 49.7MB in the beginning and 45.2MB in the end (delta: 4.5MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2022-12-14 04:52:47,491 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 54.5MB. Free memory is still 33.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 04:52:47,491 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.48ms. Allocated memory is still 71.3MB. Free memory was 49.5MB in the beginning and 37.5MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 04:52:47,491 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.76ms. Allocated memory is still 71.3MB. Free memory was 37.3MB in the beginning and 35.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 04:52:47,492 INFO L158 Benchmark]: Boogie Preprocessor took 33.26ms. Allocated memory is still 71.3MB. Free memory was 35.6MB in the beginning and 33.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 04:52:47,492 INFO L158 Benchmark]: RCFGBuilder took 7970.66ms. Allocated memory is still 71.3MB. Free memory was 33.9MB in the beginning and 40.9MB in the end (delta: -7.0MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2022-12-14 04:52:47,492 INFO L158 Benchmark]: TraceAbstraction took 320197.98ms. Allocated memory is still 71.3MB. Free memory was 40.3MB in the beginning and 47.7MB in the end (delta: -7.5MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2022-12-14 04:52:47,492 INFO L158 Benchmark]: Witness Printer took 25.50ms. Allocated memory is still 71.3MB. Free memory was 47.7MB in the beginning and 45.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 04:52:47,494 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 54.5MB. Free memory is still 33.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.48ms. Allocated memory is still 71.3MB. Free memory was 49.5MB in the beginning and 37.5MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.76ms. Allocated memory is still 71.3MB. Free memory was 37.3MB in the beginning and 35.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.26ms. Allocated memory is still 71.3MB. Free memory was 35.6MB in the beginning and 33.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 7970.66ms. Allocated memory is still 71.3MB. Free memory was 33.9MB in the beginning and 40.9MB in the end (delta: -7.0MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * TraceAbstraction took 320197.98ms. Allocated memory is still 71.3MB. Free memory was 40.3MB in the beginning and 47.7MB in the end (delta: -7.5MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. * Witness Printer took 25.50ms. Allocated memory is still 71.3MB. Free memory was 47.7MB in the beginning and 45.2MB 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 > -2.0f && IN < 2.0f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L93] CALL, EXPR f(IN) VAL [\old(x)=-1.2948752641677856] [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)=-1.2948752641677856, \result=-0.9645689725875854, x=-1.2948752641677856] [L93] RET, EXPR f(IN) VAL [f(IN)=-0.9645689725875854, IN=-1.2948752641677856] [L93] CALL, EXPR fp(IN) VAL [\old(x)=-1.2948752641677856] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-1.2948752641677856, \result=0.28533467650413513, x=-1.2948752641677856] [L93] RET, EXPR fp(IN) VAL [f(IN)=-0.9645689725875854, fp(IN)=0.28533467650413513, IN=-1.2948752641677856] [L93] float x = IN - f(IN)/fp(IN); [L95] CALL, EXPR f(x) VAL [\old(x)=2.0856075286865234] [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)=2.0856075286865234, \result=0.9365200996398926, x=2.0856075286865234] [L95] RET, EXPR f(x) VAL [f(x)=0.9365200996398926, IN=-1.2948752641677856, x=2.0856075286865234] [L95] CALL, EXPR fp(x) VAL [\old(x)=2.0856075286865234] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=2.0856075286865234, \result=-0.2722248435020447, x=2.0856075286865234] [L95] RET, EXPR fp(x) VAL [f(x)=0.9365200996398926, fp(x)=-0.2722248435020447, IN=-1.2948752641677856, x=2.0856075286865234] [L95] x = x - f(x)/fp(x) [L101] COND TRUE !(x < 0.1) VAL [IN=-1.2948752641677856, x=5.525852203369141] [L102] reach_error() VAL [IN=-1.2948752641677856, x=5.525852203369141] - 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, 37 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 320.1s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 47.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 9.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 768 SdHoareTripleChecker+Invalid, 8.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 619 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 128 IncrementalHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 149 mSDtfsCounter, 128 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 250 GetRequests, 197 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 82.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 28, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 24.0s SatisfiabilityAnalysisTime, 68.1s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 242 ConstructedInterpolants, 12 QuantifiedInterpolants, 1769 SizeOfPredicates, 64 NumberOfNonLiveVariables, 534 ConjunctsInSsa, 152 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 42/84 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! [2022-12-14 04:52:47,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb45d0c-2596-48dc-827c-452ff5c0f9cd/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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