./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1052d.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1052d.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 635f8984c4511856045f1e30e98d2922ab99db02463dd79a1ad0fa0289476012 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:54:47,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:54:47,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:54:47,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:54:47,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:54:47,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:54:47,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:54:47,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:54:47,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:54:47,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:54:47,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:54:47,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:54:47,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:54:47,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:54:47,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:54:47,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:54:47,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:54:47,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:54:47,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:54:47,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:54:47,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:54:47,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:54:47,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:54:47,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:54:47,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:54:47,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:54:47,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:54:47,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:54:47,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:54:47,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:54:47,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:54:47,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:54:47,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:54:47,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:54:47,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:54:47,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:54:47,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:54:47,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:54:47,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:54:47,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:54:47,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:54:47,622 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:54:47,679 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:54:47,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:54:47,680 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:54:47,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:54:47,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:54:47,689 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:54:47,690 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:54:47,690 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:54:47,690 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:54:47,690 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:54:47,692 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:54:47,692 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:54:47,692 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:54:47,693 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:54:47,693 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:54:47,693 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:54:47,693 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:54:47,694 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:54:47,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:54:47,695 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:54:47,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:54:47,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:54:47,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:54:47,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:54:47,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:54:47,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:54:47,699 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:54:47,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:54:47,699 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:54:47,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:54:47,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:54:47,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:54:47,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:54:47,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:54:47,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:54:47,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:54:47,702 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:54:47,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:54:47,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:54:47,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:54:47,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:54:47,703 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_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 635f8984c4511856045f1e30e98d2922ab99db02463dd79a1ad0fa0289476012 [2021-11-20 23:54:48,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:54:48,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:54:48,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:54:48,083 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:54:48,084 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:54:48,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-newlib/float_req_bl_1052d.c [2021-11-20 23:54:48,168 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/data/8dd048dde/0c78abc57cbb43fd99dd5df7ef097b1e/FLAGf701983c0 [2021-11-20 23:54:48,759 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:54:48,760 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/sv-benchmarks/c/float-newlib/float_req_bl_1052d.c [2021-11-20 23:54:48,773 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/data/8dd048dde/0c78abc57cbb43fd99dd5df7ef097b1e/FLAGf701983c0 [2021-11-20 23:54:49,139 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/data/8dd048dde/0c78abc57cbb43fd99dd5df7ef097b1e [2021-11-20 23:54:49,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:54:49,148 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:54:49,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:54:49,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:54:49,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:54:49,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:54:49" (1/1) ... [2021-11-20 23:54:49,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e35186a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:49, skipping insertion in model container [2021-11-20 23:54:49,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:54:49" (1/1) ... [2021-11-20 23:54:49,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:54:49,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:54:49,445 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_8a43852b-8320-4725-be0f-fbb9db797cd1/sv-benchmarks/c/float-newlib/float_req_bl_1052d.c[1740,1753] [2021-11-20 23:54:49,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:54:49,459 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:54:49,492 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_8a43852b-8320-4725-be0f-fbb9db797cd1/sv-benchmarks/c/float-newlib/float_req_bl_1052d.c[1740,1753] [2021-11-20 23:54:49,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:54:49,507 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:54:49,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:49 WrapperNode [2021-11-20 23:54:49,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:54:49,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:54:49,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:54:49,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:54:49,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:49" (1/1) ... [2021-11-20 23:54:49,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:49" (1/1) ... [2021-11-20 23:54:49,549 INFO L137 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2021-11-20 23:54:49,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:54:49,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:54:49,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:54:49,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:54:49,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:49" (1/1) ... [2021-11-20 23:54:49,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:49" (1/1) ... [2021-11-20 23:54:49,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:49" (1/1) ... [2021-11-20 23:54:49,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:49" (1/1) ... [2021-11-20 23:54:49,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:49" (1/1) ... [2021-11-20 23:54:49,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:49" (1/1) ... [2021-11-20 23:54:49,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:49" (1/1) ... [2021-11-20 23:54:49,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:54:49,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:54:49,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:54:49,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:54:49,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:49" (1/1) ... [2021-11-20 23:54:49,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:54:49,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:54:49,620 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:54:49,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:54:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:54:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:54:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:54:49,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-20 23:54:49,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:54:49,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-20 23:54:49,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:54:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:54:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:54:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:54:49,785 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:54:49,787 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:54:50,069 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:54:50,129 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:54:50,130 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-20 23:54:50,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:54:50 BoogieIcfgContainer [2021-11-20 23:54:50,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:54:50,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:54:50,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:54:50,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:54:50,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:54:49" (1/3) ... [2021-11-20 23:54:50,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a5e352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:54:50, skipping insertion in model container [2021-11-20 23:54:50,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:49" (2/3) ... [2021-11-20 23:54:50,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a5e352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:54:50, skipping insertion in model container [2021-11-20 23:54:50,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:54:50" (3/3) ... [2021-11-20 23:54:50,154 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052d.c [2021-11-20 23:54:50,161 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:54:50,161 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:54:50,254 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:54:50,268 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 [2021-11-20 23:54:50,268 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:54:50,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 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) [2021-11-20 23:54:50,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 23:54:50,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:54:50,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:54:50,306 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:54:50,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:54:50,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1053820573, now seen corresponding path program 1 times [2021-11-20 23:54:50,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:54:50,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212948357] [2021-11-20 23:54:50,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:50,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:54:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:54:50,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:54:50,512 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:54:50,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212948357] [2021-11-20 23:54:50,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212948357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:54:50,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:54:50,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:54:50,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402590760] [2021-11-20 23:54:50,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:54:50,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:54:50,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:54:50,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:54:50,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:54:50,564 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 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) [2021-11-20 23:54:50,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:54:50,630 INFO L93 Difference]: Finished difference Result 39 states and 59 transitions. [2021-11-20 23:54:50,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:54:50,634 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 [2021-11-20 23:54:50,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:54:50,643 INFO L225 Difference]: With dead ends: 39 [2021-11-20 23:54:50,646 INFO L226 Difference]: Without dead ends: 18 [2021-11-20 23:54:50,650 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 [2021-11-20 23:54:50,658 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:54:50,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:54:50,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-20 23:54:50,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-20 23:54:50,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:54:50,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-11-20 23:54:50,711 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 8 [2021-11-20 23:54:50,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:54:50,712 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-11-20 23:54:50,712 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) [2021-11-20 23:54:50,713 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-11-20 23:54:50,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 23:54:50,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:54:50,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:54:50,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:54:50,716 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:54:50,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:54:50,720 INFO L85 PathProgramCache]: Analyzing trace with hash 121214260, now seen corresponding path program 1 times [2021-11-20 23:54:50,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:54:50,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572156828] [2021-11-20 23:54:50,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:50,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:54:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:54:50,839 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 23:54:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:54:50,924 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-20 23:54:50,925 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 23:54:50,927 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 23:54:50,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:54:50,935 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-20 23:54:50,939 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:54:50,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:54:50 BoogieIcfgContainer [2021-11-20 23:54:50,979 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:54:50,980 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:54:50,980 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:54:50,980 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:54:50,981 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:54:50" (3/4) ... [2021-11-20 23:54:51,007 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 23:54:51,007 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:54:51,009 INFO L158 Benchmark]: Toolchain (without parser) took 1860.08ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 64.4MB in the beginning and 110.8MB in the end (delta: -46.4MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2021-11-20 23:54:51,009 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory was 80.8MB in the beginning and 80.7MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:54:51,012 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.19ms. Allocated memory is still 104.9MB. Free memory was 64.3MB in the beginning and 80.0MB in the end (delta: -15.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 23:54:51,014 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.83ms. Allocated memory is still 104.9MB. Free memory was 80.0MB in the beginning and 78.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:54:51,015 INFO L158 Benchmark]: Boogie Preprocessor took 31.44ms. Allocated memory is still 104.9MB. Free memory was 78.3MB in the beginning and 77.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:54:51,018 INFO L158 Benchmark]: RCFGBuilder took 550.08ms. Allocated memory is still 104.9MB. Free memory was 77.0MB in the beginning and 62.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 23:54:51,020 INFO L158 Benchmark]: TraceAbstraction took 844.91ms. Allocated memory is still 104.9MB. Free memory was 61.9MB in the beginning and 36.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-20 23:54:51,021 INFO L158 Benchmark]: Witness Printer took 27.08ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 36.8MB in the beginning and 110.8MB in the end (delta: -74.0MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2021-11-20 23:54:51,024 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory was 80.8MB in the beginning and 80.7MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 354.19ms. Allocated memory is still 104.9MB. Free memory was 64.3MB in the beginning and 80.0MB in the end (delta: -15.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.83ms. Allocated memory is still 104.9MB. Free memory was 80.0MB in the beginning and 78.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.44ms. Allocated memory is still 104.9MB. Free memory was 78.3MB in the beginning and 77.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 550.08ms. Allocated memory is still 104.9MB. Free memory was 77.0MB in the beginning and 62.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 844.91ms. Allocated memory is still 104.9MB. Free memory was 61.9MB in the beginning and 36.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 27.08ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 36.8MB in the beginning and 110.8MB in the end (delta: -74.0MB). Peak memory consumption was 6.9MB. 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: 82]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 81, overapproximation of bitwiseAnd at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L13] static const float huge_floor = 1.0e30; [L77] float x = 0.0f; [L78] CALL, EXPR floor_float(x) [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; VAL [\old(x)=0, huge_floor=1000000000000000000000000000000, x=0] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f VAL [\old(x)=0, huge_floor=1000000000000000000000000000000, i=-18014400665354240, i0=-1, j0=2147483264, x=0] [L25] COND FALSE !(j0 < 23) [L45] COND TRUE !((ix) < 0x7f800000L) [L46] return x + x; VAL [\old(x)=0, \result=0, huge_floor=1000000000000000000000000000000, i=-18014400665354240, i0=-1, j0=2147483264, x=0] [L78] RET, EXPR floor_float(x) [L78] float res = floor_float(x); [L81] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [huge_floor=1000000000000000000000000000000, res=0, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L81] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L82] reach_error() VAL [huge_floor=1000000000000000000000000000000, res=0, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 17 mSDtfsCounter, 6 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=20occurred 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 [2021-11-20 23:54:51,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1052d.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 635f8984c4511856045f1e30e98d2922ab99db02463dd79a1ad0fa0289476012 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:54:53,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:54:53,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:54:53,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:54:53,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:54:53,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:54:53,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:54:53,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:54:53,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:54:53,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:54:53,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:54:53,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:54:53,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:54:53,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:54:53,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:54:53,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:54:53,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:54:53,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:54:53,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:54:53,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:54:53,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:54:53,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:54:53,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:54:53,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:54:53,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:54:53,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:54:53,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:54:53,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:54:53,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:54:53,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:54:53,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:54:53,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:54:53,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:54:53,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:54:53,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:54:53,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:54:53,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:54:53,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:54:53,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:54:53,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:54:53,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:54:53,994 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-20 23:54:54,047 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:54:54,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:54:54,048 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:54:54,048 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:54:54,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:54:54,050 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:54:54,050 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:54:54,050 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:54:54,050 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:54:54,051 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:54:54,052 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:54:54,052 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:54:54,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:54:54,054 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:54:54,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:54:54,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:54:54,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:54:54,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:54:54,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:54:54,055 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 23:54:54,056 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 23:54:54,056 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:54:54,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:54:54,056 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:54:54,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:54:54,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:54:54,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 23:54:54,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:54:54,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:54:54,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:54:54,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:54:54,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:54:54,059 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-20 23:54:54,059 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 23:54:54,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:54:54,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:54:54,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:54:54,060 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_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 635f8984c4511856045f1e30e98d2922ab99db02463dd79a1ad0fa0289476012 [2021-11-20 23:54:54,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:54:54,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:54:54,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:54:54,598 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:54:54,599 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:54:54,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-newlib/float_req_bl_1052d.c [2021-11-20 23:54:54,684 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/data/26980fba0/2e652f7dd8ec4a1f962390c38c0368cb/FLAG16b5cd4dc [2021-11-20 23:54:55,285 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:54:55,286 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/sv-benchmarks/c/float-newlib/float_req_bl_1052d.c [2021-11-20 23:54:55,318 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/data/26980fba0/2e652f7dd8ec4a1f962390c38c0368cb/FLAG16b5cd4dc [2021-11-20 23:54:55,610 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/data/26980fba0/2e652f7dd8ec4a1f962390c38c0368cb [2021-11-20 23:54:55,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:54:55,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:54:55,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:54:55,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:54:55,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:54:55,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:54:55" (1/1) ... [2021-11-20 23:54:55,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f3d0638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:55, skipping insertion in model container [2021-11-20 23:54:55,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:54:55" (1/1) ... [2021-11-20 23:54:55,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:54:55,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:54:55,957 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_8a43852b-8320-4725-be0f-fbb9db797cd1/sv-benchmarks/c/float-newlib/float_req_bl_1052d.c[1740,1753] [2021-11-20 23:54:55,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:54:55,981 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:54:56,060 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_8a43852b-8320-4725-be0f-fbb9db797cd1/sv-benchmarks/c/float-newlib/float_req_bl_1052d.c[1740,1753] [2021-11-20 23:54:56,076 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:54:56,097 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:54:56,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:56 WrapperNode [2021-11-20 23:54:56,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:54:56,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:54:56,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:54:56,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:54:56,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:56" (1/1) ... [2021-11-20 23:54:56,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:56" (1/1) ... [2021-11-20 23:54:56,174 INFO L137 Inliner]: procedures = 19, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2021-11-20 23:54:56,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:54:56,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:54:56,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:54:56,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:54:56,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:56" (1/1) ... [2021-11-20 23:54:56,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:56" (1/1) ... [2021-11-20 23:54:56,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:56" (1/1) ... [2021-11-20 23:54:56,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:56" (1/1) ... [2021-11-20 23:54:56,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:56" (1/1) ... [2021-11-20 23:54:56,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:56" (1/1) ... [2021-11-20 23:54:56,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:56" (1/1) ... [2021-11-20 23:54:56,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:54:56,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:54:56,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:54:56,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:54:56,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:56" (1/1) ... [2021-11-20 23:54:56,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:54:56,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:54:56,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:54:56,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:54:56,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:54:56,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 23:54:56,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:54:56,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-20 23:54:56,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 23:54:56,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:54:56,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:54:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-20 23:54:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 23:54:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:54:56,498 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:54:56,500 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:54:57,191 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:54:57,197 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:54:57,197 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-20 23:54:57,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:54:57 BoogieIcfgContainer [2021-11-20 23:54:57,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:54:57,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:54:57,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:54:57,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:54:57,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:54:55" (1/3) ... [2021-11-20 23:54:57,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f41c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:54:57, skipping insertion in model container [2021-11-20 23:54:57,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:56" (2/3) ... [2021-11-20 23:54:57,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f41c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:54:57, skipping insertion in model container [2021-11-20 23:54:57,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:54:57" (3/3) ... [2021-11-20 23:54:57,209 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052d.c [2021-11-20 23:54:57,215 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:54:57,215 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:54:57,275 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:54:57,284 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 [2021-11-20 23:54:57,284 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:54:57,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 29 states have internal predecessors, (46), 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) [2021-11-20 23:54:57,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 23:54:57,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:54:57,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:54:57,310 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:54:57,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:54:57,317 INFO L85 PathProgramCache]: Analyzing trace with hash -2022248449, now seen corresponding path program 1 times [2021-11-20 23:54:57,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:54:57,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556154518] [2021-11-20 23:54:57,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:57,332 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:54:57,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:54:57,340 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:54:57,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 23:54:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:54:57,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 23:54:57,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:54:57,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:54:57,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:54:57,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:54:57,568 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:54:57,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556154518] [2021-11-20 23:54:57,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556154518] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:54:57,570 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:54:57,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 23:54:57,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110360113] [2021-11-20 23:54:57,573 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:54:57,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:54:57,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:54:57,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:54:57,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:54:57,634 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 29 states have internal predecessors, (46), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:54:57,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:54:57,654 INFO L93 Difference]: Finished difference Result 58 states and 90 transitions. [2021-11-20 23:54:57,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:54:57,656 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-20 23:54:57,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:54:57,667 INFO L225 Difference]: With dead ends: 58 [2021-11-20 23:54:57,667 INFO L226 Difference]: Without dead ends: 27 [2021-11-20 23:54:57,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:54:57,677 INFO L933 BasicCegarLoop]: 39 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, 39 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 [2021-11-20 23:54:57,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:54:57,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-20 23:54:57,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-20 23:54:57,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 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) [2021-11-20 23:54:57,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2021-11-20 23:54:57,723 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 10 [2021-11-20 23:54:57,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:54:57,724 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2021-11-20 23:54:57,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:54:57,725 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2021-11-20 23:54:57,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 23:54:57,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:54:57,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:54:57,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:54:57,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:54:57,941 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:54:57,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:54:57,942 INFO L85 PathProgramCache]: Analyzing trace with hash -62588350, now seen corresponding path program 1 times [2021-11-20 23:54:57,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:54:57,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663139325] [2021-11-20 23:54:57,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:57,944 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:54:57,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:54:57,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:54:57,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 23:54:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:54:58,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:54:58,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:54:58,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:54:58,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:54:58,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:54:58,496 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:54:58,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663139325] [2021-11-20 23:54:58,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663139325] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:54:58,499 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:54:58,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-20 23:54:58,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759227146] [2021-11-20 23:54:58,505 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:54:58,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:54:58,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:54:58,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:54:58,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:54:58,516 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2021-11-20 23:54:58,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:54:58,883 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2021-11-20 23:54:58,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:54:58,890 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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 11 [2021-11-20 23:54:58,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:54:58,894 INFO L225 Difference]: With dead ends: 72 [2021-11-20 23:54:58,895 INFO L226 Difference]: Without dead ends: 62 [2021-11-20 23:54:58,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:54:58,899 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 49 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:54:58,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 206 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 15 Unchecked, 0.2s Time] [2021-11-20 23:54:58,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-20 23:54:58,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 26. [2021-11-20 23:54:58,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 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) [2021-11-20 23:54:58,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2021-11-20 23:54:58,919 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 11 [2021-11-20 23:54:58,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:54:58,920 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-11-20 23:54:58,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2021-11-20 23:54:58,921 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2021-11-20 23:54:58,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 23:54:58,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:54:58,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:54:58,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:54:59,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:54:59,129 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:54:59,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:54:59,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1311186430, now seen corresponding path program 1 times [2021-11-20 23:54:59,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:54:59,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453010549] [2021-11-20 23:54:59,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:59,132 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:54:59,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:54:59,133 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:54:59,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 23:54:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:54:59,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:54:59,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:54:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:54:59,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:54:59,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:54:59,521 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:54:59,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453010549] [2021-11-20 23:54:59,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453010549] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:54:59,522 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:54:59,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-20 23:54:59,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132405485] [2021-11-20 23:54:59,523 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:54:59,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:54:59,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:54:59,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:54:59,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:54:59,525 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-11-20 23:54:59,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:54:59,632 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2021-11-20 23:54:59,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:54:59,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 [2021-11-20 23:54:59,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:54:59,640 INFO L225 Difference]: With dead ends: 50 [2021-11-20 23:54:59,640 INFO L226 Difference]: Without dead ends: 34 [2021-11-20 23:54:59,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:54:59,642 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 32 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:54:59,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 103 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 8 Unchecked, 0.0s Time] [2021-11-20 23:54:59,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-20 23:54:59,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2021-11-20 23:54:59,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 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) [2021-11-20 23:54:59,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-11-20 23:54:59,648 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2021-11-20 23:54:59,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:54:59,649 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-11-20 23:54:59,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-11-20 23:54:59,649 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-11-20 23:54:59,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:54:59,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:54:59,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:54:59,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:54:59,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:54:59,868 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:54:59,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:54:59,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1612307429, now seen corresponding path program 1 times [2021-11-20 23:54:59,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:54:59,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999238269] [2021-11-20 23:54:59,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:59,870 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:54:59,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:54:59,871 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:54:59,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 23:55:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:55:00,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:55:00,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:55:00,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:55:00,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:55:02,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:55:02,051 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:55:02,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999238269] [2021-11-20 23:55:02,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999238269] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:55:02,052 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:55:02,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 23:55:02,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728470502] [2021-11-20 23:55:02,052 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:55:02,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:55:02,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:55:02,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:55:02,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:55:02,055 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 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) [2021-11-20 23:55:02,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:55:02,305 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-11-20 23:55:02,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:55:02,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 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 [2021-11-20 23:55:02,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:55:02,311 INFO L225 Difference]: With dead ends: 34 [2021-11-20 23:55:02,311 INFO L226 Difference]: Without dead ends: 22 [2021-11-20 23:55:02,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:55:02,313 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 28 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:55:02,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 42 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:55:02,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-20 23:55:02,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-20 23:55:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:55:02,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-11-20 23:55:02,319 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 15 [2021-11-20 23:55:02,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:55:02,319 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-11-20 23:55:02,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 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) [2021-11-20 23:55:02,319 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-11-20 23:55:02,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 23:55:02,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:55:02,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:55:02,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:55:02,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:55:02,538 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:55:02,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:55:02,538 INFO L85 PathProgramCache]: Analyzing trace with hash 879764433, now seen corresponding path program 1 times [2021-11-20 23:55:02,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:55:02,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592479872] [2021-11-20 23:55:02,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:55:02,539 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:55:02,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:55:02,541 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:55:02,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 23:55:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:55:02,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:55:02,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:55:02,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:55:02,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:55:02,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:55:02,926 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:55:02,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592479872] [2021-11-20 23:55:02,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592479872] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:55:02,926 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:55:02,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-20 23:55:02,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769314658] [2021-11-20 23:55:02,927 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:55:02,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 23:55:02,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:55:02,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 23:55:02,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:55:02,928 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:55:03,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:55:03,133 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-11-20 23:55:03,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:55:03,134 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 23:55:03,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:55:03,135 INFO L225 Difference]: With dead ends: 34 [2021-11-20 23:55:03,135 INFO L226 Difference]: Without dead ends: 21 [2021-11-20 23:55:03,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:55:03,137 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 50 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:55:03,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 27 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:55:03,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-20 23:55:03,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-20 23:55:03,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.0) internal successors, (20), 20 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) [2021-11-20 23:55:03,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2021-11-20 23:55:03,143 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 16 [2021-11-20 23:55:03,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:55:03,143 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2021-11-20 23:55:03,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:55:03,144 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2021-11-20 23:55:03,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:55:03,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:55:03,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:55:03,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 23:55:03,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:55:03,346 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:55:03,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:55:03,347 INFO L85 PathProgramCache]: Analyzing trace with hash -733783834, now seen corresponding path program 1 times [2021-11-20 23:55:03,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:55:03,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223364873] [2021-11-20 23:55:03,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:55:03,348 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:55:03,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:55:03,349 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:55:03,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 23:55:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:55:03,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 23:55:03,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:55:03,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2021-11-20 23:55:03,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-11-20 23:55:03,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:55:03,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:55:04,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:55:04,338 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:55:04,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223364873] [2021-11-20 23:55:04,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223364873] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:55:04,339 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:55:04,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2021-11-20 23:55:04,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266467924] [2021-11-20 23:55:04,339 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:55:04,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:55:04,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:55:04,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:55:04,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:55:04,341 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:55:04,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:55:04,480 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2021-11-20 23:55:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 23:55:04,481 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 23:55:04,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:55:04,481 INFO L225 Difference]: With dead ends: 21 [2021-11-20 23:55:04,482 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 23:55:04,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:55:04,483 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:55:04,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 107 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 36 Unchecked, 0.0s Time] [2021-11-20 23:55:04,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 23:55:04,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 23:55:04,485 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) [2021-11-20 23:55:04,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 23:55:04,485 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-11-20 23:55:04,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:55:04,485 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 23:55:04,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:55:04,486 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 23:55:04,486 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 23:55:04,493 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 23:55:04,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 23:55:04,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:55:04,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 23:55:04,886 INFO L858 garLoopResultBuilder]: For program point L27(lines 27 33) no Hoare annotation was computed. [2021-11-20 23:55:04,886 INFO L858 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2021-11-20 23:55:04,886 INFO L858 garLoopResultBuilder]: For program point L81-2(lines 81 84) no Hoare annotation was computed. [2021-11-20 23:55:04,887 INFO L858 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-11-20 23:55:04,887 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-20 23:55:04,887 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 23:55:04,887 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-20 23:55:04,887 INFO L858 garLoopResultBuilder]: For program point L28(lines 28 32) no Hoare annotation was computed. [2021-11-20 23:55:04,887 INFO L858 garLoopResultBuilder]: For program point L61-1(lines 61 65) no Hoare annotation was computed. [2021-11-20 23:55:04,888 INFO L854 garLoopResultBuilder]: At program point L61-2(lines 61 65) the Hoare annotation is: (let ((.cse0 (fp (_ bv0 1) (_ bv0 8) (_ bv0 23)))) (and (= |ULTIMATE.start_floor_float_#res#1| .cse0) (= |ULTIMATE.start_floor_float_~i0~0#1| (_ bv0 32)) (= ~huge_floor~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (exists ((|v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11| (_ BitVec 32))) (let ((.cse1 (select (select |#memory_int| |v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11|) (_ bv0 32)))) (and (= |ULTIMATE.start___signbit_float_~x#1| (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))) (= .cse1 (_ bv0 32))))) |ULTIMATE.start_main_#t~short9#1| (= |ULTIMATE.start_floor_float_~x#1| .cse0) (= currentRoundingMode roundNearestTiesToEven))) [2021-11-20 23:55:04,888 INFO L858 garLoopResultBuilder]: For program point L61-3(lines 61 65) no Hoare annotation was computed. [2021-11-20 23:55:04,888 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 82) no Hoare annotation was computed. [2021-11-20 23:55:04,888 INFO L861 garLoopResultBuilder]: At program point L86(lines 70 87) the Hoare annotation is: true [2021-11-20 23:55:04,888 INFO L858 garLoopResultBuilder]: For program point L82(line 82) no Hoare annotation was computed. [2021-11-20 23:55:04,888 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 48) no Hoare annotation was computed. [2021-11-20 23:55:04,888 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 23:55:04,889 INFO L858 garLoopResultBuilder]: For program point L25(lines 25 49) no Hoare annotation was computed. [2021-11-20 23:55:04,889 INFO L858 garLoopResultBuilder]: For program point L50(lines 50 54) no Hoare annotation was computed. [2021-11-20 23:55:04,889 INFO L858 garLoopResultBuilder]: For program point L50-1(lines 15 56) no Hoare annotation was computed. [2021-11-20 23:55:04,889 INFO L858 garLoopResultBuilder]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2021-11-20 23:55:04,889 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 42) no Hoare annotation was computed. [2021-11-20 23:55:04,889 INFO L854 garLoopResultBuilder]: At program point L67(lines 58 68) the Hoare annotation is: (let ((.cse0 (fp (_ bv0 1) (_ bv0 8) (_ bv0 23)))) (and (= |ULTIMATE.start___signbit_float_#res#1| (_ bv0 32)) (= |ULTIMATE.start_floor_float_#res#1| .cse0) (= (fp ((_ extract 31 31) |ULTIMATE.start___signbit_float_~w~0#1|) ((_ extract 30 23) |ULTIMATE.start___signbit_float_~w~0#1|) ((_ extract 22 0) |ULTIMATE.start___signbit_float_~w~0#1|)) .cse0) (= |ULTIMATE.start_floor_float_~i0~0#1| (_ bv0 32)) (= ~huge_floor~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) |ULTIMATE.start_main_#t~short9#1| (= |ULTIMATE.start_floor_float_~x#1| .cse0) (= currentRoundingMode roundNearestTiesToEven))) [2021-11-20 23:55:04,890 INFO L858 garLoopResultBuilder]: For program point L30(lines 30 32) no Hoare annotation was computed. [2021-11-20 23:55:04,890 INFO L858 garLoopResultBuilder]: For program point L26(lines 26 43) no Hoare annotation was computed. [2021-11-20 23:55:04,890 INFO L854 garLoopResultBuilder]: At program point L55(lines 15 56) the Hoare annotation is: (and (= |ULTIMATE.start_floor_float_~i0~0#1| (_ bv0 32)) (exists ((|v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11| (_ BitVec 32))) (let ((.cse0 (select (select |#memory_int| |v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11|) (_ bv0 32)))) (and (= .cse0 (_ bv0 32)) (= |ULTIMATE.start_floor_float_#res#1| (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)))))) (= ~huge_floor~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= |ULTIMATE.start_floor_float_~x#1| (fp (_ bv0 1) (_ bv0 8) (_ bv0 23))) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-20 23:55:04,890 INFO L858 garLoopResultBuilder]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2021-11-20 23:55:04,890 INFO L854 garLoopResultBuilder]: At program point L18-2(lines 18 22) the Hoare annotation is: (and (= ~huge_floor~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= |ULTIMATE.start_floor_float_~x#1| (fp (_ bv0 1) (_ bv0 8) (_ bv0 23))) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-20 23:55:04,891 INFO L858 garLoopResultBuilder]: For program point L18-3(lines 18 22) no Hoare annotation was computed. [2021-11-20 23:55:04,891 INFO L858 garLoopResultBuilder]: For program point L39(lines 39 40) no Hoare annotation was computed. [2021-11-20 23:55:04,891 INFO L858 garLoopResultBuilder]: For program point L39-2(lines 39 40) no Hoare annotation was computed. [2021-11-20 23:55:04,896 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-20 23:55:04,898 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:55:04,909 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 23:55:04,914 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 23:55:04,915 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 23:55:04,916 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 23:55:04,917 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:04,917 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:04,917 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:04,918 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:04,918 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 23:55:04,919 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:04,919 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:04,920 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:04,920 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:04,920 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 23:55:04,922 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:04,922 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:04,922 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:04,922 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:04,923 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 23:55:04,924 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:04,924 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:04,924 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:04,924 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:04,925 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 23:55:04,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:55:04 BoogieIcfgContainer [2021-11-20 23:55:04,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:55:04,927 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:55:04,927 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:55:04,927 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:55:04,928 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:54:57" (3/4) ... [2021-11-20 23:55:04,931 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 23:55:04,944 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-11-20 23:55:04,944 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-20 23:55:04,945 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 23:55:04,945 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 23:55:04,973 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((i0 == 0bv32 && (\exists v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11 : bv32 :: unknown-#memory_int-unknown[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11][0bv32] == 0bv32 && \result == ~fp~LONGDOUBLE(unknown-#memory_int-unknown[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11][0bv32][31:31], unknown-#memory_int-unknown[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11][0bv32][30:23], unknown-#memory_int-unknown[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11][0bv32][22:0]))) && huge_floor == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && x == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-11-20 23:55:04,993 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((\result == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23) && i0 == 0bv32) && huge_floor == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && (\exists v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11 : bv32 :: x == ~fp~LONGDOUBLE(unknown-#memory_int-unknown[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11][0bv32][31:31], unknown-#memory_int-unknown[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11][0bv32][30:23], unknown-#memory_int-unknown[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11][0bv32][22:0]) && unknown-#memory_int-unknown[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11][0bv32] == 0bv32)) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && x == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-11-20 23:55:04,993 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\result == 0bv32 && \result == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)) && i0 == 0bv32) && huge_floor == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && x == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-11-20 23:55:05,009 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-20 23:55:05,009 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:55:05,010 INFO L158 Benchmark]: Toolchain (without parser) took 9396.78ms. Allocated memory was 75.5MB in the beginning and 113.2MB in the end (delta: 37.7MB). Free memory was 59.2MB in the beginning and 92.7MB in the end (delta: -33.5MB). Peak memory consumption was 56.1MB. Max. memory is 16.1GB. [2021-11-20 23:55:05,011 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 75.5MB. Free memory is still 56.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:55:05,011 INFO L158 Benchmark]: CACSL2BoogieTranslator took 483.72ms. Allocated memory is still 75.5MB. Free memory was 59.1MB in the beginning and 57.7MB in the end (delta: 1.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 23:55:05,012 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.57ms. Allocated memory is still 75.5MB. Free memory was 57.7MB in the beginning and 55.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:55:05,012 INFO L158 Benchmark]: Boogie Preprocessor took 83.31ms. Allocated memory is still 75.5MB. Free memory was 55.9MB in the beginning and 54.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:55:05,013 INFO L158 Benchmark]: RCFGBuilder took 939.12ms. Allocated memory is still 75.5MB. Free memory was 54.3MB in the beginning and 42.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 23:55:05,014 INFO L158 Benchmark]: TraceAbstraction took 7725.00ms. Allocated memory was 75.5MB in the beginning and 113.2MB in the end (delta: 37.7MB). Free memory was 41.8MB in the beginning and 44.1MB in the end (delta: -2.3MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2021-11-20 23:55:05,014 INFO L158 Benchmark]: Witness Printer took 82.91ms. Allocated memory is still 113.2MB. Free memory was 44.1MB in the beginning and 92.7MB in the end (delta: -48.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 23:55:05,017 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 75.5MB. Free memory is still 56.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 483.72ms. Allocated memory is still 75.5MB. Free memory was 59.1MB in the beginning and 57.7MB in the end (delta: 1.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.57ms. Allocated memory is still 75.5MB. Free memory was 57.7MB in the beginning and 55.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 83.31ms. Allocated memory is still 75.5MB. Free memory was 55.9MB in the beginning and 54.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 939.12ms. Allocated memory is still 75.5MB. Free memory was 54.3MB in the beginning and 42.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7725.00ms. Allocated memory was 75.5MB in the beginning and 113.2MB in the end (delta: 37.7MB). Free memory was 41.8MB in the beginning and 44.1MB in the end (delta: -2.3MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. * Witness Printer took 82.91ms. Allocated memory is still 113.2MB. Free memory was 44.1MB in the beginning and 92.7MB in the end (delta: -48.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] - 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: 82]: 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, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 166 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 166 mSDsluCounter, 524 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 59 IncrementalHoareTripleChecker+Unchecked, 358 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81 IncrementalHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 166 mSDtfsCounter, 81 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 48 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 167 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 9 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 156 ConstructedInterpolants, 16 QuantifiedInterpolants, 778 SizeOfPredicates, 34 NumberOfNonLiveVariables, 267 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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: 70]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 58]: Loop Invariant [2021-11-20 23:55:05,031 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 23:55:05,032 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((((((\result == 0bv32 && \result == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)) && i0 == 0bv32) && huge_floor == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && x == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 18]: Loop Invariant [2021-11-20 23:55:05,032 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 23:55:05,033 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (huge_floor == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) && x == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 61]: Loop Invariant [2021-11-20 23:55:05,034 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:05,034 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:05,034 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:05,034 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:05,035 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 23:55:05,035 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:05,036 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:05,036 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:05,036 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:05,036 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (((((\result == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23) && i0 == 0bv32) && huge_floor == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && (\exists v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11 : bv32 :: x == ~fp~LONGDOUBLE(unknown-#memory_int-unknown[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11][0bv32][31:31], unknown-#memory_int-unknown[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11][0bv32][30:23], unknown-#memory_int-unknown[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11][0bv32][22:0]) && unknown-#memory_int-unknown[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11][0bv32] == 0bv32)) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && x == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 15]: Loop Invariant [2021-11-20 23:55:05,037 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:05,038 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:05,038 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:05,038 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:05,038 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 23:55:05,039 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:05,039 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:05,040 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:05,040 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11,QUANTIFIED] [2021-11-20 23:55:05,040 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (((i0 == 0bv32 && (\exists v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11 : bv32 :: unknown-#memory_int-unknown[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11][0bv32] == 0bv32 && \result == ~fp~LONGDOUBLE(unknown-#memory_int-unknown[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11][0bv32][31:31], unknown-#memory_int-unknown[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11][0bv32][30:23], unknown-#memory_int-unknown[v_ULTIMATE.start_floor_float_~#sf_u~0#1.base_11][0bv32][22:0]))) && huge_floor == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && x == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2021-11-20 23:55:05,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a43852b-8320-4725-be0f-fbb9db797cd1/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE