./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_2+newton_1_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_1_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f15ee43151b815daf0172d1dd7cbf85838195f09623b71f36e6eaf1920c66307 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:35:42,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:35:42,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:35:42,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:35:42,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:35:42,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:35:42,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:35:42,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:35:42,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:35:42,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:35:42,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:35:42,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:35:42,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:35:42,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:35:42,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:35:42,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:35:42,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:35:42,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:35:42,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:35:42,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:35:42,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:35:42,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:35:42,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:35:42,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:35:42,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:35:42,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:35:42,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:35:42,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:35:42,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:35:42,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:35:42,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:35:42,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:35:42,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:35:42,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:35:42,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:35:42,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:35:42,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:35:42,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:35:42,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:35:42,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:35:42,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:35:42,597 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:35:42,633 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:35:42,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:35:42,635 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:35:42,635 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:35:42,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:35:42,637 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:35:42,637 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:35:42,638 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:35:42,638 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:35:42,638 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:35:42,639 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:35:42,639 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:35:42,640 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:35:42,640 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:35:42,641 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:35:42,641 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:35:42,642 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:35:42,642 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:35:42,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:35:42,644 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:35:42,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:35:42,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:35:42,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:35:42,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:35:42,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:35:42,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:35:42,647 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:35:42,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:35:42,647 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:35:42,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:35:42,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:35:42,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:35:42,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:35:42,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:35:42,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:35:42,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:35:42,650 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:35:42,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:35:42,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:35:42,650 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:35:42,651 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:35:42,651 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f15ee43151b815daf0172d1dd7cbf85838195f09623b71f36e6eaf1920c66307 [2021-11-21 01:35:42,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:35:43,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:35:43,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:35:43,018 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:35:43,019 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:35:43,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/combinations/gcd_2+newton_1_8.i [2021-11-21 01:35:43,136 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/data/5add4483f/f98b8d1af5944f1daee87feee0e343f7/FLAGaaf21a2b0 [2021-11-21 01:35:43,701 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:35:43,701 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i [2021-11-21 01:35:43,719 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/data/5add4483f/f98b8d1af5944f1daee87feee0e343f7/FLAGaaf21a2b0 [2021-11-21 01:35:44,048 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/data/5add4483f/f98b8d1af5944f1daee87feee0e343f7 [2021-11-21 01:35:44,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:35:44,053 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:35:44,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:35:44,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:35:44,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:35:44,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:35:44" (1/1) ... [2021-11-21 01:35:44,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee13c67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:44, skipping insertion in model container [2021-11-21 01:35:44,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:35:44" (1/1) ... [2021-11-21 01:35:44,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:35:44,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:35:44,318 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[1226,1239] [2021-11-21 01:35:44,353 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[2820,2833] [2021-11-21 01:35:44,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:35:44,365 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:35:44,381 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[1226,1239] [2021-11-21 01:35:44,396 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[2820,2833] [2021-11-21 01:35:44,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:35:44,414 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:35:44,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:44 WrapperNode [2021-11-21 01:35:44,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:35:44,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:35:44,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:35:44,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:35:44,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:44" (1/1) ... [2021-11-21 01:35:44,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:44" (1/1) ... [2021-11-21 01:35:44,493 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-11-21 01:35:44,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:35:44,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:35:44,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:35:44,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:35:44,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:44" (1/1) ... [2021-11-21 01:35:44,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:44" (1/1) ... [2021-11-21 01:35:44,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:44" (1/1) ... [2021-11-21 01:35:44,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:44" (1/1) ... [2021-11-21 01:35:44,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:44" (1/1) ... [2021-11-21 01:35:44,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:44" (1/1) ... [2021-11-21 01:35:44,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:44" (1/1) ... [2021-11-21 01:35:44,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:35:44,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:35:44,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:35:44,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:35:44,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:44" (1/1) ... [2021-11-21 01:35:44,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:35:44,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:35:44,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:35:44,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:35:44,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:35:44,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:35:44,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:35:44,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:35:44,763 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:35:44,765 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:35:44,980 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:35:45,087 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:35:45,103 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:35:45,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:35:45 BoogieIcfgContainer [2021-11-21 01:35:45,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:35:45,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:35:45,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:35:45,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:35:45,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:35:44" (1/3) ... [2021-11-21 01:35:45,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c561a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:35:45, skipping insertion in model container [2021-11-21 01:35:45,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:44" (2/3) ... [2021-11-21 01:35:45,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c561a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:35:45, skipping insertion in model container [2021-11-21 01:35:45,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:35:45" (3/3) ... [2021-11-21 01:35:45,118 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_8.i [2021-11-21 01:35:45,124 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:35:45,140 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 01:35:45,222 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:35:45,230 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:35:45,232 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 01:35:45,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:45,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 01:35:45,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:45,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 01:35:45,271 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:35:45,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:45,287 INFO L85 PathProgramCache]: Analyzing trace with hash 3484809, now seen corresponding path program 1 times [2021-11-21 01:35:45,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:45,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259373888] [2021-11-21 01:35:45,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:45,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:35:45,450 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:35:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:35:45,518 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 01:35:45,542 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:35:45,544 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-21 01:35:45,546 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-21 01:35:45,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:35:45,552 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-21 01:35:45,557 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:35:45,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:35:45 BoogieIcfgContainer [2021-11-21 01:35:45,587 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:35:45,592 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:35:45,592 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:35:45,592 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:35:45,593 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:35:45" (3/4) ... [2021-11-21 01:35:45,597 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 01:35:45,597 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:35:45,600 INFO L158 Benchmark]: Toolchain (without parser) took 1545.50ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 66.8MB in the beginning and 98.3MB in the end (delta: -31.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:35:45,603 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory was 53.0MB in the beginning and 53.0MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:35:45,604 INFO L158 Benchmark]: CACSL2BoogieTranslator took 351.45ms. Allocated memory is still 100.7MB. Free memory was 66.5MB in the beginning and 74.9MB in the end (delta: -8.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:35:45,605 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.33ms. Allocated memory is still 100.7MB. Free memory was 74.9MB in the beginning and 72.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:35:45,612 INFO L158 Benchmark]: Boogie Preprocessor took 58.13ms. Allocated memory is still 100.7MB. Free memory was 72.9MB in the beginning and 71.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:35:45,623 INFO L158 Benchmark]: RCFGBuilder took 553.17ms. Allocated memory is still 100.7MB. Free memory was 71.9MB in the beginning and 59.4MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 01:35:45,624 INFO L158 Benchmark]: TraceAbstraction took 478.11ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 59.1MB in the beginning and 98.7MB in the end (delta: -39.7MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2021-11-21 01:35:45,625 INFO L158 Benchmark]: Witness Printer took 5.65ms. Allocated memory is still 123.7MB. Free memory was 98.7MB in the beginning and 98.3MB in the end (delta: 314.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:35:45,637 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory was 53.0MB in the beginning and 53.0MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 351.45ms. Allocated memory is still 100.7MB. Free memory was 66.5MB in the beginning and 74.9MB in the end (delta: -8.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.33ms. Allocated memory is still 100.7MB. Free memory was 74.9MB in the beginning and 72.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.13ms. Allocated memory is still 100.7MB. Free memory was 72.9MB in the beginning and 71.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 553.17ms. Allocated memory is still 100.7MB. Free memory was 71.9MB in the beginning and 59.4MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 478.11ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 59.1MB in the beginning and 98.7MB in the end (delta: -39.7MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * Witness Printer took 5.65ms. Allocated memory is still 123.7MB. Free memory was 98.7MB in the beginning and 98.3MB in the end (delta: 314.9kB). 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 80. 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) [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) [L93] CALL, EXPR fp(IN) [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) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=49] [L102] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-21 01:35:45,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_1_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f15ee43151b815daf0172d1dd7cbf85838195f09623b71f36e6eaf1920c66307 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:35:48,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:35:48,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:35:48,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:35:48,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:35:48,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:35:48,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:35:48,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:35:48,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:35:48,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:35:48,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:35:48,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:35:48,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:35:48,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:35:48,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:35:48,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:35:48,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:35:48,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:35:48,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:35:48,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:35:48,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:35:48,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:35:48,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:35:48,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:35:48,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:35:48,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:35:48,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:35:48,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:35:48,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:35:48,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:35:48,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:35:48,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:35:48,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:35:48,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:35:48,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:35:48,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:35:48,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:35:48,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:35:48,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:35:48,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:35:48,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:35:48,806 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 01:35:48,837 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:35:48,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:35:48,838 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:35:48,838 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:35:48,839 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:35:48,839 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:35:48,840 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:35:48,840 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:35:48,840 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:35:48,840 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:35:48,841 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:35:48,841 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:35:48,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:35:48,842 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:35:48,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:35:48,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:35:48,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:35:48,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:35:48,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:35:48,844 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:35:48,844 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:35:48,844 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:35:48,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:35:48,844 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:35:48,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:35:48,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:35:48,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:35:48,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:35:48,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:35:48,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:35:48,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:35:48,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:35:48,847 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:35:48,847 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:35:48,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:35:48,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:35:48,848 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:35:48,848 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_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f15ee43151b815daf0172d1dd7cbf85838195f09623b71f36e6eaf1920c66307 [2021-11-21 01:35:49,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:35:49,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:35:49,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:35:49,321 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:35:49,322 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:35:49,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/combinations/gcd_2+newton_1_8.i [2021-11-21 01:35:49,409 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/data/178ce4448/c3743fa30ad048daab142aadcb9c9006/FLAGf43c458a8 [2021-11-21 01:35:50,090 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:35:50,096 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i [2021-11-21 01:35:50,108 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/data/178ce4448/c3743fa30ad048daab142aadcb9c9006/FLAGf43c458a8 [2021-11-21 01:35:50,427 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/data/178ce4448/c3743fa30ad048daab142aadcb9c9006 [2021-11-21 01:35:50,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:35:50,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:35:50,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:35:50,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:35:50,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:35:50,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:35:50" (1/1) ... [2021-11-21 01:35:50,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4af0be44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:50, skipping insertion in model container [2021-11-21 01:35:50,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:35:50" (1/1) ... [2021-11-21 01:35:50,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:35:50,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:35:50,650 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[1226,1239] [2021-11-21 01:35:50,684 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[2820,2833] [2021-11-21 01:35:50,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:35:50,716 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:35:50,742 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[1226,1239] [2021-11-21 01:35:50,792 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[2820,2833] [2021-11-21 01:35:50,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:35:50,843 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:35:50,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:50 WrapperNode [2021-11-21 01:35:50,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:35:50,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:35:50,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:35:50,846 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:35:50,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:50" (1/1) ... [2021-11-21 01:35:50,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:50" (1/1) ... [2021-11-21 01:35:50,939 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-11-21 01:35:50,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:35:50,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:35:50,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:35:50,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:35:50,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:50" (1/1) ... [2021-11-21 01:35:50,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:50" (1/1) ... [2021-11-21 01:35:50,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:50" (1/1) ... [2021-11-21 01:35:50,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:50" (1/1) ... [2021-11-21 01:35:50,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:50" (1/1) ... [2021-11-21 01:35:51,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:50" (1/1) ... [2021-11-21 01:35:51,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:50" (1/1) ... [2021-11-21 01:35:51,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:35:51,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:35:51,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:35:51,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:35:51,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:50" (1/1) ... [2021-11-21 01:35:51,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:35:51,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:35:51,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:35:51,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:35:51,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:35:51,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:35:51,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:35:51,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:35:51,244 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:35:51,246 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:35:57,886 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:35:57,893 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:35:57,894 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:35:57,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:35:57 BoogieIcfgContainer [2021-11-21 01:35:57,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:35:57,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:35:57,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:35:57,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:35:57,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:35:50" (1/3) ... [2021-11-21 01:35:57,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69be2b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:35:57, skipping insertion in model container [2021-11-21 01:35:57,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:50" (2/3) ... [2021-11-21 01:35:57,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69be2b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:35:57, skipping insertion in model container [2021-11-21 01:35:57,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:35:57" (3/3) ... [2021-11-21 01:35:57,906 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_8.i [2021-11-21 01:35:57,913 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:35:57,913 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 01:35:57,996 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:35:58,007 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:35:58,007 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 01:35:58,025 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:58,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 01:35:58,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:58,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:58,033 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:35:58,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:58,039 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-11-21 01:35:58,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:35:58,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135561674] [2021-11-21 01:35:58,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:58,055 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:35:58,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:35:58,058 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:35:58,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:35:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:59,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 01:35:59,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:35:59,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:59,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:35:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:59,848 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:35:59,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135561674] [2021-11-21 01:35:59,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135561674] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:59,850 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:59,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:35:59,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829532572] [2021-11-21 01:35:59,853 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:59,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:35:59,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:35:59,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:35:59,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:35:59,903 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:59,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:59,927 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-11-21 01:35:59,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:35:59,929 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-21 01:35:59,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:59,937 INFO L225 Difference]: With dead ends: 47 [2021-11-21 01:35:59,937 INFO L226 Difference]: Without dead ends: 19 [2021-11-21 01:35:59,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:35:59,945 INFO L933 BasicCegarLoop]: 31 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, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:59,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:35:59,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-21 01:35:59,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-21 01:35:59,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-21 01:35:59,979 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-11-21 01:35:59,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:59,980 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-21 01:35:59,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:59,980 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-21 01:35:59,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 01:35:59,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:59,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:36:00,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:36:00,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:36:00,184 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:36:00,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:36:00,185 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-11-21 01:36:00,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:36:00,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428399292] [2021-11-21 01:36:00,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:00,186 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:36:00,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:36:00,188 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:36:00,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:36:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:36:04,518 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:36:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:36:10,990 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-21 01:36:10,991 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:36:10,992 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-21 01:36:10,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-21 01:36:11,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-21 01:36:11,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:36:11,199 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-21 01:36:11,204 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:36:11,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:36:11 BoogieIcfgContainer [2021-11-21 01:36:11,235 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:36:11,236 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:36:11,236 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:36:11,236 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:36:11,237 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:35:57" (3/4) ... [2021-11-21 01:36:11,239 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-21 01:36:11,277 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 01:36:11,278 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:36:11,279 INFO L158 Benchmark]: Toolchain (without parser) took 20845.39ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 34.5MB in the beginning and 46.0MB in the end (delta: -11.4MB). Peak memory consumption was 1.6MB. Max. memory is 16.1GB. [2021-11-21 01:36:11,279 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 56.6MB. Free memory was 37.6MB in the beginning and 37.5MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:36:11,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 409.60ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 34.3MB in the beginning and 51.6MB in the end (delta: -17.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 01:36:11,281 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.02ms. Allocated memory is still 69.2MB. Free memory was 51.5MB in the beginning and 49.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:36:11,281 INFO L158 Benchmark]: Boogie Preprocessor took 80.06ms. Allocated memory is still 69.2MB. Free memory was 49.7MB in the beginning and 48.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:36:11,282 INFO L158 Benchmark]: RCFGBuilder took 6872.65ms. Allocated memory is still 69.2MB. Free memory was 48.3MB in the beginning and 37.9MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:36:11,282 INFO L158 Benchmark]: TraceAbstraction took 13336.70ms. Allocated memory is still 69.2MB. Free memory was 37.5MB in the beginning and 48.1MB in the end (delta: -10.6MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2021-11-21 01:36:11,283 INFO L158 Benchmark]: Witness Printer took 42.42ms. Allocated memory is still 69.2MB. Free memory was 47.8MB in the beginning and 46.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:36:11,286 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 56.6MB. Free memory was 37.6MB in the beginning and 37.5MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 409.60ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 34.3MB in the beginning and 51.6MB in the end (delta: -17.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.02ms. Allocated memory is still 69.2MB. Free memory was 51.5MB in the beginning and 49.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 80.06ms. Allocated memory is still 69.2MB. Free memory was 49.7MB in the beginning and 48.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 6872.65ms. Allocated memory is still 69.2MB. Free memory was 48.3MB in the beginning and 37.9MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 13336.70ms. Allocated memory is still 69.2MB. Free memory was 37.5MB in the beginning and 48.1MB in the end (delta: -10.6MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. * Witness Printer took 42.42ms. Allocated memory is still 69.2MB. Free memory was 47.8MB in the beginning and 46.0MB in the end (delta: 1.8MB). 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) [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)=1.6961736679077148, \result=1.0078669786453247, x=1.6961736679077148] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=1.6961736679077148, \result=-0.06054672226309776, x=1.6961736679077148] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=1.6961736679077148, x=18.34227752685547] [L102] reach_error() VAL [IN=1.6961736679077148, x=18.34227752685547] - 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 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 13.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 5.8s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-21 01:36:11,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797097d8-6733-4469-afc9-da4c4a4c98f5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE