./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1051.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1051.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7 --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 22112bf5fec517f156789ccf9f4e6d3a5bacd7e511b4f0e72a5035e85c02df36 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:04:31,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:04:31,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:04:31,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:04:31,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:04:31,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:04:31,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:04:31,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:04:31,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:04:31,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:04:31,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:04:31,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:04:31,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:04:31,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:04:31,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:04:31,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:04:31,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:04:31,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:04:31,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:04:31,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:04:31,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:04:31,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:04:31,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:04:31,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:04:31,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:04:31,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:04:31,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:04:31,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:04:31,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:04:31,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:04:31,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:04:31,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:04:31,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:04:31,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:04:31,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:04:31,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:04:31,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:04:31,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:04:31,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:04:31,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:04:31,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:04:31,483 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:04:31,524 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:04:31,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:04:31,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:04:31,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:04:31,532 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:04:31,532 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:04:31,532 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:04:31,532 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:04:31,533 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:04:31,533 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:04:31,534 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:04:31,534 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:04:31,534 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:04:31,535 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:04:31,535 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:04:31,535 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:04:31,535 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:04:31,535 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:04:31,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:04:31,537 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:04:31,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:04:31,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:04:31,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:04:31,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:04:31,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:04:31,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:04:31,539 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:04:31,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:04:31,540 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:04:31,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:04:31,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:04:31,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:04:31,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:04:31,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:04:31,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:04:31,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:04:31,542 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:04:31,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:04:31,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:04:31,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:04:31,543 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:04:31,543 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_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22112bf5fec517f156789ccf9f4e6d3a5bacd7e511b4f0e72a5035e85c02df36 [2021-11-25 19:04:31,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:04:31,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:04:31,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:04:31,825 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:04:31,825 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:04:31,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/float-newlib/double_req_bl_1051.c [2021-11-25 19:04:31,888 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/data/6273226ec/31a5805538c4439db9e7907e282da45d/FLAG057ea08b2 [2021-11-25 19:04:32,281 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:04:32,282 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/sv-benchmarks/c/float-newlib/double_req_bl_1051.c [2021-11-25 19:04:32,288 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/data/6273226ec/31a5805538c4439db9e7907e282da45d/FLAG057ea08b2 [2021-11-25 19:04:32,678 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/data/6273226ec/31a5805538c4439db9e7907e282da45d [2021-11-25 19:04:32,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:04:32,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:04:32,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:04:32,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:04:32,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:04:32,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:04:32" (1/1) ... [2021-11-25 19:04:32,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d5a1a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:32, skipping insertion in model container [2021-11-25 19:04:32,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:04:32" (1/1) ... [2021-11-25 19:04:32,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:04:32,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:04:32,863 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_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/sv-benchmarks/c/float-newlib/double_req_bl_1051.c[2106,2119] [2021-11-25 19:04:32,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:04:32,885 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:04:32,927 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_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/sv-benchmarks/c/float-newlib/double_req_bl_1051.c[2106,2119] [2021-11-25 19:04:32,928 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:04:32,941 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:04:32,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:32 WrapperNode [2021-11-25 19:04:32,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:04:32,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:04:32,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:04:32,943 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:04:32,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:32" (1/1) ... [2021-11-25 19:04:32,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:32" (1/1) ... [2021-11-25 19:04:32,997 INFO L137 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 100 [2021-11-25 19:04:33,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:04:33,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:04:33,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:04:33,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:04:33,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:32" (1/1) ... [2021-11-25 19:04:33,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:32" (1/1) ... [2021-11-25 19:04:33,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:32" (1/1) ... [2021-11-25 19:04:33,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:32" (1/1) ... [2021-11-25 19:04:33,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:32" (1/1) ... [2021-11-25 19:04:33,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:32" (1/1) ... [2021-11-25 19:04:33,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:32" (1/1) ... [2021-11-25 19:04:33,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:04:33,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:04:33,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:04:33,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:04:33,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:32" (1/1) ... [2021-11-25 19:04:33,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:04:33,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:04:33,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:04:33,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:04:33,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:04:33,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:04:33,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:04:33,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-25 19:04:33,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:04:33,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-25 19:04:33,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:04:33,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:04:33,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:04:33,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:04:33,213 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:04:33,215 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:04:33,383 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:04:33,536 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:04:33,537 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-25 19:04:33,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:04:33 BoogieIcfgContainer [2021-11-25 19:04:33,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:04:33,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:04:33,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:04:33,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:04:33,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:04:32" (1/3) ... [2021-11-25 19:04:33,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733a73df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:04:33, skipping insertion in model container [2021-11-25 19:04:33,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:32" (2/3) ... [2021-11-25 19:04:33,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733a73df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:04:33, skipping insertion in model container [2021-11-25 19:04:33,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:04:33" (3/3) ... [2021-11-25 19:04:33,559 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2021-11-25 19:04:33,564 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:04:33,564 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:04:33,613 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:04:33,619 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 [2021-11-25 19:04:33,619 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:04:33,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.6875) internal successors, (27), 17 states have internal predecessors, (27), 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) [2021-11-25 19:04:33,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 19:04:33,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:04:33,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:04:33,639 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:04:33,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:04:33,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1371057062, now seen corresponding path program 1 times [2021-11-25 19:04:33,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:04:33,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599422060] [2021-11-25 19:04:33,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:33,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:04:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:33,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:04:33,803 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:04:33,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599422060] [2021-11-25 19:04:33,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599422060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:04:33,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:04:33,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:04:33,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533736476] [2021-11-25 19:04:33,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:04:33,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:04:33,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:04:33,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:04:33,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:04:33,865 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.6875) internal successors, (27), 17 states have internal predecessors, (27), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-11-25 19:04:33,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:04:33,926 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2021-11-25 19:04:33,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:04:33,929 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 [2021-11-25 19:04:33,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:04:33,941 INFO L225 Difference]: With dead ends: 35 [2021-11-25 19:04:33,941 INFO L226 Difference]: Without dead ends: 16 [2021-11-25 19:04:33,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:04:33,948 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:04:33,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:04:33,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-25 19:04:34,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-25 19:04:34,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 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) [2021-11-25 19:04:34,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-11-25 19:04:34,007 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 8 [2021-11-25 19:04:34,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:04:34,007 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-11-25 19:04:34,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-11-25 19:04:34,008 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-11-25 19:04:34,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 19:04:34,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:04:34,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:04:34,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:04:34,015 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:04:34,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:04:34,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1275913669, now seen corresponding path program 1 times [2021-11-25 19:04:34,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:04:34,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938102953] [2021-11-25 19:04:34,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:34,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:04:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:04:34,091 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 19:04:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:04:34,137 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 19:04:34,137 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 19:04:34,139 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:04:34,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:04:34,145 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-25 19:04:34,147 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:04:34,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:04:34 BoogieIcfgContainer [2021-11-25 19:04:34,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:04:34,172 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:04:34,172 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:04:34,172 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:04:34,173 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:04:33" (3/4) ... [2021-11-25 19:04:34,176 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 19:04:34,176 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:04:34,177 INFO L158 Benchmark]: Toolchain (without parser) took 1494.49ms. Allocated memory was 98.6MB in the beginning and 134.2MB in the end (delta: 35.7MB). Free memory was 56.4MB in the beginning and 103.0MB in the end (delta: -46.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:04:34,177 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 98.6MB. Free memory is still 72.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:04:34,178 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.73ms. Allocated memory is still 98.6MB. Free memory was 56.2MB in the beginning and 71.6MB in the end (delta: -15.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-25 19:04:34,179 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.36ms. Allocated memory is still 98.6MB. Free memory was 71.2MB in the beginning and 69.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:04:34,179 INFO L158 Benchmark]: Boogie Preprocessor took 59.56ms. Allocated memory is still 98.6MB. Free memory was 69.5MB in the beginning and 68.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:04:34,180 INFO L158 Benchmark]: RCFGBuilder took 476.65ms. Allocated memory is still 98.6MB. Free memory was 68.2MB in the beginning and 51.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-25 19:04:34,181 INFO L158 Benchmark]: TraceAbstraction took 630.86ms. Allocated memory was 98.6MB in the beginning and 134.2MB in the end (delta: 35.7MB). Free memory was 51.0MB in the beginning and 103.9MB in the end (delta: -52.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:04:34,181 INFO L158 Benchmark]: Witness Printer took 4.08ms. Allocated memory is still 134.2MB. Free memory was 103.9MB in the beginning and 103.0MB in the end (delta: 919.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:04:34,184 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 98.6MB. Free memory is still 72.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.73ms. Allocated memory is still 98.6MB. Free memory was 56.2MB in the beginning and 71.6MB in the end (delta: -15.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.36ms. Allocated memory is still 98.6MB. Free memory was 71.2MB in the beginning and 69.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.56ms. Allocated memory is still 98.6MB. Free memory was 69.5MB in the beginning and 68.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 476.65ms. Allocated memory is still 98.6MB. Free memory was 68.2MB in the beginning and 51.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 630.86ms. Allocated memory was 98.6MB in the beginning and 134.2MB in the end (delta: 35.7MB). Free memory was 51.0MB in the beginning and 103.9MB in the end (delta: -52.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.08ms. Allocated memory is still 134.2MB. Free memory was 103.9MB in the beginning and 103.0MB in the end (delta: 919.8kB). 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: 95]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 82, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 27. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; [L90] double x = 0.0 / 0.0; [L91] CALL, EXPR floor_double(x) [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-1, i1=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001] [L28] COND FALSE !(j0 < 20) VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-1, i1=0, j0=52, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001] [L49] COND TRUE j0 > 51 [L50] COND FALSE !(j0 == 0x400) [L53] return x; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, \result=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-1, i1=0, j0=52, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001] [L91] RET, EXPR floor_double(x) [L91] double res = floor_double(x); [L94] CALL, EXPR isnan_double(res) [L82] return x != x; [L94] RET, EXPR isnan_double(res) [L94] COND TRUE !isnan_double(res) [L95] reach_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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, 15 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 15 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-25 19:04:34,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/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_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1051.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7 --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 22112bf5fec517f156789ccf9f4e6d3a5bacd7e511b4f0e72a5035e85c02df36 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:04:36,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:04:36,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:04:36,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:04:36,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:04:36,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:04:36,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:04:36,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:04:36,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:04:36,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:04:36,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:04:36,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:04:36,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:04:36,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:04:36,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:04:36,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:04:36,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:04:36,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:04:36,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:04:36,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:04:36,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:04:36,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:04:36,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:04:36,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:04:36,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:04:36,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:04:36,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:04:36,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:04:36,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:04:36,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:04:36,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:04:36,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:04:36,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:04:36,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:04:36,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:04:36,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:04:36,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:04:36,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:04:36,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:04:36,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:04:36,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:04:36,798 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 19:04:36,838 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:04:36,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:04:36,839 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:04:36,840 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:04:36,840 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:04:36,841 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:04:36,841 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:04:36,841 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:04:36,841 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:04:36,842 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:04:36,842 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:04:36,843 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:04:36,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:04:36,844 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:04:36,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:04:36,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:04:36,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:04:36,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:04:36,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:04:36,846 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:04:36,846 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 19:04:36,846 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 19:04:36,846 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:04:36,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:04:36,847 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:04:36,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:04:36,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:04:36,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 19:04:36,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:04:36,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:04:36,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:04:36,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:04:36,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:04:36,849 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 19:04:36,849 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 19:04:36,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:04:36,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:04:36,850 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:04:36,850 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_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22112bf5fec517f156789ccf9f4e6d3a5bacd7e511b4f0e72a5035e85c02df36 [2021-11-25 19:04:37,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:04:37,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:04:37,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:04:37,246 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:04:37,258 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:04:37,259 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/float-newlib/double_req_bl_1051.c [2021-11-25 19:04:37,334 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/data/83b809fb3/49c7449ea7f14bd1931004a30409a7bb/FLAG44c2184fc [2021-11-25 19:04:37,862 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:04:37,863 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/sv-benchmarks/c/float-newlib/double_req_bl_1051.c [2021-11-25 19:04:37,871 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/data/83b809fb3/49c7449ea7f14bd1931004a30409a7bb/FLAG44c2184fc [2021-11-25 19:04:38,219 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/data/83b809fb3/49c7449ea7f14bd1931004a30409a7bb [2021-11-25 19:04:38,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:04:38,224 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:04:38,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:04:38,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:04:38,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:04:38,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:04:38" (1/1) ... [2021-11-25 19:04:38,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42c22935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:38, skipping insertion in model container [2021-11-25 19:04:38,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:04:38" (1/1) ... [2021-11-25 19:04:38,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:04:38,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:04:38,470 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_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/sv-benchmarks/c/float-newlib/double_req_bl_1051.c[2106,2119] [2021-11-25 19:04:38,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:04:38,485 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:04:38,573 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_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/sv-benchmarks/c/float-newlib/double_req_bl_1051.c[2106,2119] [2021-11-25 19:04:38,574 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:04:38,595 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:04:38,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:38 WrapperNode [2021-11-25 19:04:38,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:04:38,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:04:38,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:04:38,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:04:38,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:38" (1/1) ... [2021-11-25 19:04:38,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:38" (1/1) ... [2021-11-25 19:04:38,635 INFO L137 Inliner]: procedures = 19, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 100 [2021-11-25 19:04:38,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:04:38,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:04:38,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:04:38,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:04:38,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:38" (1/1) ... [2021-11-25 19:04:38,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:38" (1/1) ... [2021-11-25 19:04:38,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:38" (1/1) ... [2021-11-25 19:04:38,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:38" (1/1) ... [2021-11-25 19:04:38,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:38" (1/1) ... [2021-11-25 19:04:38,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:38" (1/1) ... [2021-11-25 19:04:38,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:38" (1/1) ... [2021-11-25 19:04:38,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:04:38,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:04:38,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:04:38,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:04:38,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:38" (1/1) ... [2021-11-25 19:04:38,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:04:38,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:04:38,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:04:38,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:04:38,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:04:38,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-25 19:04:38,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-25 19:04:38,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 19:04:38,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:04:38,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 19:04:38,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:04:38,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:04:38,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 19:04:38,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:04:38,868 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:04:38,887 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:04:40,472 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:04:40,478 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:04:40,479 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-25 19:04:40,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:04:40 BoogieIcfgContainer [2021-11-25 19:04:40,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:04:40,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:04:40,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:04:40,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:04:40,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:04:38" (1/3) ... [2021-11-25 19:04:40,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3f15aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:04:40, skipping insertion in model container [2021-11-25 19:04:40,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:38" (2/3) ... [2021-11-25 19:04:40,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3f15aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:04:40, skipping insertion in model container [2021-11-25 19:04:40,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:04:40" (3/3) ... [2021-11-25 19:04:40,506 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2021-11-25 19:04:40,511 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:04:40,511 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:04:40,558 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:04:40,565 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 [2021-11-25 19:04:40,565 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:04:40,579 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 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) [2021-11-25 19:04:40,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 19:04:40,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:04:40,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:04:40,586 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:04:40,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:04:40,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1930047821, now seen corresponding path program 1 times [2021-11-25 19:04:40,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:04:40,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14761805] [2021-11-25 19:04:40,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:40,604 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:04:40,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:04:40,607 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:04:40,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 19:04:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:40,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 19:04:40,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:04:40,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:04:40,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:04:40,757 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:04:40,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14761805] [2021-11-25 19:04:40,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14761805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:04:40,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:04:40,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:04:40,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023890130] [2021-11-25 19:04:40,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:04:40,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:04:40,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:04:40,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:04:40,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:04:40,792 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 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 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) [2021-11-25 19:04:40,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:04:40,809 INFO L93 Difference]: Finished difference Result 66 states and 104 transitions. [2021-11-25 19:04:40,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:04:40,811 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 [2021-11-25 19:04:40,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:04:40,819 INFO L225 Difference]: With dead ends: 66 [2021-11-25 19:04:40,819 INFO L226 Difference]: Without dead ends: 31 [2021-11-25 19:04:40,821 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:04:40,825 INFO L933 BasicCegarLoop]: 48 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, 48 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 [2021-11-25 19:04:40,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:04:40,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-25 19:04:40,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-25 19:04:40,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.5) internal successors, (45), 30 states have internal predecessors, (45), 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) [2021-11-25 19:04:40,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2021-11-25 19:04:40,857 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 11 [2021-11-25 19:04:40,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:04:40,858 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2021-11-25 19:04:40,858 INFO L471 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) [2021-11-25 19:04:40,858 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2021-11-25 19:04:40,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 19:04:40,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:04:40,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:04:40,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:04:41,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:04:41,062 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:04:41,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:04:41,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1310126896, now seen corresponding path program 1 times [2021-11-25 19:04:41,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:04:41,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001147944] [2021-11-25 19:04:41,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:41,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:04:41,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:04:41,065 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:04:41,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 19:04:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:41,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:04:41,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:04:41,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:04:41,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:04:41,560 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:04:41,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001147944] [2021-11-25 19:04:41,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001147944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:04:41,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:04:41,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:04:41,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176201540] [2021-11-25 19:04:41,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:04:41,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:04:41,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:04:41,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:04:41,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:04:41,564 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:04:41,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:04:41,621 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2021-11-25 19:04:41,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:04:41,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-25 19:04:41,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:04:41,624 INFO L225 Difference]: With dead ends: 36 [2021-11-25 19:04:41,624 INFO L226 Difference]: Without dead ends: 31 [2021-11-25 19:04:41,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:04:41,626 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:04:41,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 145 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 18 Unchecked, 0.0s Time] [2021-11-25 19:04:41,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-25 19:04:41,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-25 19:04:41,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 30 states have internal predecessors, (44), 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) [2021-11-25 19:04:41,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2021-11-25 19:04:41,633 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 44 transitions. Word has length 12 [2021-11-25 19:04:41,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:04:41,633 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 44 transitions. [2021-11-25 19:04:41,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:04:41,636 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 44 transitions. [2021-11-25 19:04:41,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 19:04:41,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:04:41,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:04:41,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:04:41,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:04:41,854 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:04:41,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:04:41,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1803097798, now seen corresponding path program 1 times [2021-11-25 19:04:41,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:04:41,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615708447] [2021-11-25 19:04:41,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:41,860 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:04:41,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:04:41,861 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:04:41,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 19:04:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:41,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:04:41,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:04:42,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:04:42,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:04:42,198 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:04:42,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615708447] [2021-11-25 19:04:42,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615708447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:04:42,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:04:42,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:04:42,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620087051] [2021-11-25 19:04:42,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:04:42,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:04:42,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:04:42,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:04:42,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:04:42,201 INFO L87 Difference]: Start difference. First operand 31 states and 44 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:04:42,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:04:42,236 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2021-11-25 19:04:42,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:04:42,239 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-25 19:04:42,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:04:42,239 INFO L225 Difference]: With dead ends: 36 [2021-11-25 19:04:42,240 INFO L226 Difference]: Without dead ends: 31 [2021-11-25 19:04:42,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:04:42,241 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:04:42,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 145 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 17 Unchecked, 0.0s Time] [2021-11-25 19:04:42,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-25 19:04:42,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-25 19:04:42,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 30 states have internal predecessors, (43), 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) [2021-11-25 19:04:42,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 43 transitions. [2021-11-25 19:04:42,254 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 43 transitions. Word has length 12 [2021-11-25 19:04:42,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:04:42,254 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 43 transitions. [2021-11-25 19:04:42,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:04:42,255 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2021-11-25 19:04:42,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 19:04:42,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:04:42,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:04:42,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:04:42,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:04:42,465 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:04:42,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:04:42,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2009966502, now seen corresponding path program 1 times [2021-11-25 19:04:42,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:04:42,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597842091] [2021-11-25 19:04:42,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:42,466 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:04:42,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:04:42,468 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:04:42,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 19:04:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:42,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 19:04:42,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:04:42,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:04:42,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:04:42,781 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:04:42,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597842091] [2021-11-25 19:04:42,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597842091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:04:42,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:04:42,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:04:42,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329822586] [2021-11-25 19:04:42,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:04:42,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:04:42,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:04:42,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:04:42,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:04:42,784 INFO L87 Difference]: Start difference. First operand 31 states and 43 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:04:43,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:04:43,312 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2021-11-25 19:04:43,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:04:43,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-25 19:04:43,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:04:43,315 INFO L225 Difference]: With dead ends: 42 [2021-11-25 19:04:43,315 INFO L226 Difference]: Without dead ends: 21 [2021-11-25 19:04:43,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:04:43,317 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:04:43,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 68 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:04:43,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-25 19:04:43,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-25 19:04:43,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 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) [2021-11-25 19:04:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-11-25 19:04:43,321 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 12 [2021-11-25 19:04:43,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:04:43,322 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-11-25 19:04:43,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:04:43,322 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-11-25 19:04:43,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 19:04:43,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:04:43,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:04:43,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:04:43,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:04:43,537 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:04:43,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:04:43,537 INFO L85 PathProgramCache]: Analyzing trace with hash -649399050, now seen corresponding path program 1 times [2021-11-25 19:04:43,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:04:43,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799726227] [2021-11-25 19:04:43,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:43,538 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:04:43,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:04:43,543 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:04:43,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 19:04:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:43,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:04:43,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:04:43,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:04:43,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:04:43,960 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:04:43,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799726227] [2021-11-25 19:04:43,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799726227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:04:43,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:04:43,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:04:43,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497908071] [2021-11-25 19:04:43,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:04:43,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:04:43,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:04:43,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:04:43,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:04:43,962 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2021-11-25 19:04:43,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:04:43,964 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-11-25 19:04:43,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:04:43,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 15 [2021-11-25 19:04:43,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:04:43,965 INFO L225 Difference]: With dead ends: 29 [2021-11-25 19:04:43,965 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 19:04:43,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:04:43,967 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:04:43,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 10 Unchecked, 0.0s Time] [2021-11-25 19:04:43,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 19:04:43,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-25 19:04:43,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0) internal successors, (16), 16 states have internal predecessors, (16), 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) [2021-11-25 19:04:43,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2021-11-25 19:04:43,972 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 15 [2021-11-25 19:04:43,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:04:43,972 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2021-11-25 19:04:43,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2021-11-25 19:04:43,972 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2021-11-25 19:04:43,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 19:04:43,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:04:43,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:04:43,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:04:44,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:04:44,174 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:04:44,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:04:44,175 INFO L85 PathProgramCache]: Analyzing trace with hash 101523525, now seen corresponding path program 1 times [2021-11-25 19:04:44,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:04:44,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492167097] [2021-11-25 19:04:44,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:44,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:04:44,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:04:44,176 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:04:44,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-25 19:04:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:44,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 19:04:44,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:04:44,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:04:44,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:04:44,637 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:04:44,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492167097] [2021-11-25 19:04:44,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492167097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:04:44,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:04:44,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:04:44,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085466492] [2021-11-25 19:04:44,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:04:44,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:04:44,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:04:44,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:04:44,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:04:44,639 INFO L87 Difference]: Start difference. First operand 17 states and 16 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-11-25 19:04:44,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:04:44,640 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2021-11-25 19:04:44,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:04:44,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-11-25 19:04:44,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:04:44,640 INFO L225 Difference]: With dead ends: 17 [2021-11-25 19:04:44,641 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 19:04:44,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:04:44,642 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:04:44,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 5 Unchecked, 0.0s Time] [2021-11-25 19:04:44,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 19:04:44,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 19:04:44,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-11-25 19:04:44,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 19:04:44,644 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-11-25 19:04:44,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:04:44,644 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 19:04:44,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-11-25 19:04:44,644 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 19:04:44,644 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 19:04:44,647 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:04:44,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:04:44,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:04:44,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 19:04:44,923 INFO L858 garLoopResultBuilder]: For program point L60(lines 60 67) no Hoare annotation was computed. [2021-11-25 19:04:44,923 INFO L858 garLoopResultBuilder]: For program point L94(lines 94 97) no Hoare annotation was computed. [2021-11-25 19:04:44,924 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 19:04:44,924 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-25 19:04:44,924 INFO L858 garLoopResultBuilder]: For program point L28(lines 28 71) no Hoare annotation was computed. [2021-11-25 19:04:44,924 INFO L854 garLoopResultBuilder]: At program point L78(lines 18 79) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_floor_double_#res#1|)) [2021-11-25 19:04:44,924 INFO L858 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2021-11-25 19:04:44,924 INFO L858 garLoopResultBuilder]: For program point L29(lines 29 48) no Hoare annotation was computed. [2021-11-25 19:04:44,925 INFO L858 garLoopResultBuilder]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2021-11-25 19:04:44,925 INFO L854 garLoopResultBuilder]: At program point L21-2(lines 21 26) the Hoare annotation is: (and (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_floor_double_~x#1|) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-25 19:04:44,925 INFO L858 garLoopResultBuilder]: For program point L21-3(lines 21 26) no Hoare annotation was computed. [2021-11-25 19:04:44,925 INFO L858 garLoopResultBuilder]: For program point L30(lines 30 37) no Hoare annotation was computed. [2021-11-25 19:04:44,925 INFO L858 garLoopResultBuilder]: For program point L72(lines 72 77) no Hoare annotation was computed. [2021-11-25 19:04:44,926 INFO L858 garLoopResultBuilder]: For program point L72-1(lines 18 79) no Hoare annotation was computed. [2021-11-25 19:04:44,926 INFO L858 garLoopResultBuilder]: For program point L72-2(lines 72 77) no Hoare annotation was computed. [2021-11-25 19:04:44,926 INFO L858 garLoopResultBuilder]: For program point L64(lines 64 65) no Hoare annotation was computed. [2021-11-25 19:04:44,926 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 36) no Hoare annotation was computed. [2021-11-25 19:04:44,926 INFO L858 garLoopResultBuilder]: For program point L64-2(lines 64 65) no Hoare annotation was computed. [2021-11-25 19:04:44,926 INFO L858 garLoopResultBuilder]: For program point L56(lines 56 57) no Hoare annotation was computed. [2021-11-25 19:04:44,927 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-11-25 19:04:44,927 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-25 19:04:44,927 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 95) no Hoare annotation was computed. [2021-11-25 19:04:44,927 INFO L854 garLoopResultBuilder]: At program point L82(line 82) the Hoare annotation is: (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res#1|) [2021-11-25 19:04:44,927 INFO L858 garLoopResultBuilder]: For program point L49(lines 49 71) no Hoare annotation was computed. [2021-11-25 19:04:44,927 INFO L861 garLoopResultBuilder]: At program point L99(lines 84 100) the Hoare annotation is: true [2021-11-25 19:04:44,928 INFO L858 garLoopResultBuilder]: For program point L33(lines 33 36) no Hoare annotation was computed. [2021-11-25 19:04:44,928 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 19:04:44,928 INFO L858 garLoopResultBuilder]: For program point L58(lines 58 70) no Hoare annotation was computed. [2021-11-25 19:04:44,928 INFO L858 garLoopResultBuilder]: For program point L50(lines 50 53) no Hoare annotation was computed. [2021-11-25 19:04:44,928 INFO L858 garLoopResultBuilder]: For program point L42(lines 42 47) no Hoare annotation was computed. [2021-11-25 19:04:44,928 INFO L858 garLoopResultBuilder]: For program point L59(lines 59 68) no Hoare annotation was computed. [2021-11-25 19:04:44,929 INFO L858 garLoopResultBuilder]: For program point L59-1(lines 59 68) no Hoare annotation was computed. [2021-11-25 19:04:44,929 INFO L858 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2021-11-25 19:04:44,929 INFO L858 garLoopResultBuilder]: For program point L43-2(lines 43 44) no Hoare annotation was computed. [2021-11-25 19:04:44,932 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-25 19:04:44,933 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:04:44,939 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 19:04:44,945 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 19:04:44,947 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:04:44,949 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:04:44,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:04:44 BoogieIcfgContainer [2021-11-25 19:04:44,950 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:04:44,951 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:04:44,951 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:04:44,951 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:04:44,951 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:04:40" (3/4) ... [2021-11-25 19:04:44,954 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 19:04:44,967 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-11-25 19:04:44,967 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-25 19:04:44,967 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-25 19:04:44,968 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 19:04:44,992 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) [2021-11-25 19:04:44,994 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: 1bv32 == \result [2021-11-25 19:04:45,021 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 19:04:45,021 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:04:45,022 INFO L158 Benchmark]: Toolchain (without parser) took 6797.47ms. Allocated memory was 56.6MB in the beginning and 88.1MB in the end (delta: 31.5MB). Free memory was 34.7MB in the beginning and 40.0MB in the end (delta: -5.3MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. [2021-11-25 19:04:45,022 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 38.1MB in the beginning and 38.0MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:04:45,023 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.28ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 34.5MB in the beginning and 55.9MB in the end (delta: -21.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 19:04:45,023 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.74ms. Allocated memory is still 73.4MB. Free memory was 55.9MB in the beginning and 54.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:04:45,024 INFO L158 Benchmark]: Boogie Preprocessor took 32.68ms. Allocated memory is still 73.4MB. Free memory was 54.1MB in the beginning and 52.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:04:45,024 INFO L158 Benchmark]: RCFGBuilder took 1811.30ms. Allocated memory is still 73.4MB. Free memory was 52.4MB in the beginning and 39.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 19:04:45,025 INFO L158 Benchmark]: TraceAbstraction took 4467.80ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 39.4MB in the beginning and 43.6MB in the end (delta: -4.2MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2021-11-25 19:04:45,025 INFO L158 Benchmark]: Witness Printer took 70.89ms. Allocated memory is still 88.1MB. Free memory was 43.1MB in the beginning and 40.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 19:04:45,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 38.1MB in the beginning and 38.0MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 368.28ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 34.5MB in the beginning and 55.9MB in the end (delta: -21.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.74ms. Allocated memory is still 73.4MB. Free memory was 55.9MB in the beginning and 54.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.68ms. Allocated memory is still 73.4MB. Free memory was 54.1MB in the beginning and 52.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1811.30ms. Allocated memory is still 73.4MB. Free memory was 52.4MB in the beginning and 39.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4467.80ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 39.4MB in the beginning and 43.6MB in the end (delta: -4.2MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * Witness Printer took 70.89ms. Allocated memory is still 88.1MB. Free memory was 43.1MB in the beginning and 40.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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 - PositiveResult [Line: 95]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 457 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 50 IncrementalHoareTripleChecker+Unchecked, 313 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 144 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 31, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 10 NumberOfFragments, 21 HoareAnnotationTreeSize, 4 FomulaSimplifications, 26 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 30 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 72 ConstructedInterpolants, 23 QuantifiedInterpolants, 384 SizeOfPredicates, 41 NumberOfNonLiveVariables, 293 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2021-11-25 19:04:45,052 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 19:04:45,052 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) - InvariantResult [Line: 21]: Loop Invariant [2021-11-25 19:04:45,053 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:04:45,054 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 82]: Loop Invariant Derived loop invariant: 1bv32 == \result - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-25 19:04:45,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253bb3fe-e4a2-4179-af03-ad4a13fc9a61/bin/utaipan-eEHZpOm5b7/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 Result: TRUE