./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:33:09,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:33:09,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:33:09,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:33:09,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:33:09,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:33:09,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:33:09,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:33:09,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:33:09,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:33:09,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:33:09,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:33:09,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:33:09,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:33:09,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:33:09,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:33:09,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:33:09,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:33:09,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:33:09,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:33:09,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:33:09,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:33:09,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:33:09,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:33:09,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:33:09,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:33:09,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:33:09,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:33:09,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:33:09,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:33:09,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:33:09,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:33:09,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:33:09,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:33:09,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:33:09,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:33:09,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:33:09,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:33:09,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:33:09,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:33:09,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:33:09,551 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:33:09,573 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:33:09,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:33:09,574 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:33:09,574 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:33:09,575 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:33:09,575 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:33:09,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:33:09,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:33:09,576 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:33:09,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:33:09,576 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:33:09,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:33:09,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:33:09,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:33:09,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:33:09,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:33:09,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:33:09,577 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:33:09,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:33:09,578 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:33:09,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:33:09,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:33:09,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:33:09,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:33:09,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:33:09,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:33:09,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:33:09,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:33:09,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:33:09,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:33:09,579 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:33:09,580 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:33:09,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:33:09,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:33:09,580 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 [2021-12-06 17:33:09,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:33:09,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:33:09,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:33:09,787 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:33:09,788 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:33:09,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2021-12-06 17:33:09,831 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/data/640016446/270e6bdc23444cf29c51fb51cdd08ae6/FLAG6ed513475 [2021-12-06 17:33:10,235 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:33:10,235 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2021-12-06 17:33:10,239 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/data/640016446/270e6bdc23444cf29c51fb51cdd08ae6/FLAG6ed513475 [2021-12-06 17:33:10,249 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/data/640016446/270e6bdc23444cf29c51fb51cdd08ae6 [2021-12-06 17:33:10,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:33:10,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:33:10,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:33:10,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:33:10,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:33:10,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:33:10" (1/1) ... [2021-12-06 17:33:10,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ea2163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:10, skipping insertion in model container [2021-12-06 17:33:10,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:33:10" (1/1) ... [2021-12-06 17:33:10,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:33:10,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:33:10,387 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_00d80ccc-702b-4928-a912-de8cebc0a168/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2021-12-06 17:33:10,395 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:33:10,401 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:33:10,410 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_00d80ccc-702b-4928-a912-de8cebc0a168/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2021-12-06 17:33:10,411 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:33:10,421 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:33:10,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:10 WrapperNode [2021-12-06 17:33:10,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:33:10,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:33:10,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:33:10,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:33:10,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:10" (1/1) ... [2021-12-06 17:33:10,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:10" (1/1) ... [2021-12-06 17:33:10,444 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 26 [2021-12-06 17:33:10,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:33:10,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:33:10,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:33:10,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:33:10,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:10" (1/1) ... [2021-12-06 17:33:10,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:10" (1/1) ... [2021-12-06 17:33:10,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:10" (1/1) ... [2021-12-06 17:33:10,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:10" (1/1) ... [2021-12-06 17:33:10,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:10" (1/1) ... [2021-12-06 17:33:10,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:10" (1/1) ... [2021-12-06 17:33:10,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:10" (1/1) ... [2021-12-06 17:33:10,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:33:10,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:33:10,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:33:10,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:33:10,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:10" (1/1) ... [2021-12-06 17:33:10,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:33:10,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:33:10,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:33:10,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:33:10,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:33:10,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:33:10,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:33:10,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:33:10,574 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:33:10,575 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:33:10,629 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:33:10,633 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:33:10,633 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 17:33:10,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:33:10 BoogieIcfgContainer [2021-12-06 17:33:10,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:33:10,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:33:10,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:33:10,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:33:10,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:33:10" (1/3) ... [2021-12-06 17:33:10,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163cbe40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:33:10, skipping insertion in model container [2021-12-06 17:33:10,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:10" (2/3) ... [2021-12-06 17:33:10,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163cbe40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:33:10, skipping insertion in model container [2021-12-06 17:33:10,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:33:10" (3/3) ... [2021-12-06 17:33:10,642 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div.i [2021-12-06 17:33:10,646 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:33:10,646 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:33:10,684 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:33:10,690 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=PETRI_NET, 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 [2021-12-06 17:33:10,690 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:33:10,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2021-12-06 17:33:10,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 17:33:10,705 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:33:10,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 17:33:10,706 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:33:10,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:33:10,710 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-12-06 17:33:10,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:33:10,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190929896] [2021-12-06 17:33:10,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:33:10,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:33:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 17:33:10,786 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 17:33:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 17:33:10,807 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 17:33:10,809 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 17:33:10,810 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 17:33:10,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:33:10,815 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-06 17:33:10,818 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 17:33:10,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:33:10 BoogieIcfgContainer [2021-12-06 17:33:10,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 17:33:10,834 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 17:33:10,834 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 17:33:10,834 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 17:33:10,835 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:33:10" (3/4) ... [2021-12-06 17:33:10,838 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 17:33:10,838 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 17:33:10,839 INFO L158 Benchmark]: Toolchain (without parser) took 586.29ms. Allocated memory is still 107.0MB. Free memory was 70.8MB in the beginning and 59.4MB in the end (delta: 11.4MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2021-12-06 17:33:10,839 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 107.0MB. Free memory is still 87.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:33:10,840 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.38ms. Allocated memory is still 107.0MB. Free memory was 70.5MB in the beginning and 83.7MB in the end (delta: -13.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 17:33:10,841 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.11ms. Allocated memory is still 107.0MB. Free memory was 83.3MB in the beginning and 82.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:33:10,841 INFO L158 Benchmark]: Boogie Preprocessor took 13.12ms. Allocated memory is still 107.0MB. Free memory was 82.1MB in the beginning and 81.2MB in the end (delta: 877.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:33:10,842 INFO L158 Benchmark]: RCFGBuilder took 176.40ms. Allocated memory is still 107.0MB. Free memory was 81.2MB in the beginning and 72.7MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 17:33:10,842 INFO L158 Benchmark]: TraceAbstraction took 196.93ms. Allocated memory is still 107.0MB. Free memory was 72.0MB in the beginning and 59.9MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 17:33:10,843 INFO L158 Benchmark]: Witness Printer took 3.90ms. Allocated memory is still 107.0MB. Free memory was 59.9MB in the beginning and 59.4MB in the end (delta: 434.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:33:10,846 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 107.0MB. Free memory is still 87.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 168.38ms. Allocated memory is still 107.0MB. Free memory was 70.5MB in the beginning and 83.7MB in the end (delta: -13.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.11ms. Allocated memory is still 107.0MB. Free memory was 83.3MB in the beginning and 82.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.12ms. Allocated memory is still 107.0MB. Free memory was 82.1MB in the beginning and 81.2MB in the end (delta: 877.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 176.40ms. Allocated memory is still 107.0MB. Free memory was 81.2MB in the beginning and 72.7MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 196.93ms. Allocated memory is still 107.0MB. Free memory was 72.0MB in the beginning and 59.9MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Witness Printer took 3.90ms. Allocated memory is still 107.0MB. Free memory was 59.9MB in the beginning and 59.4MB in the end (delta: 434.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: 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 29, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L20] float x = 1.0f; [L21] float x1 = x/2.5f; VAL [x=1] [L23] COND FALSE !(x1 != x) VAL [x=1] [L29] CALL __VERIFIER_assert(x == 0) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-06 17:33:10,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:33:12,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:33:12,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:33:12,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:33:12,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:33:12,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:33:12,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:33:12,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:33:12,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:33:12,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:33:12,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:33:12,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:33:12,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:33:12,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:33:12,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:33:12,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:33:12,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:33:12,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:33:12,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:33:12,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:33:12,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:33:12,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:33:12,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:33:12,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:33:12,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:33:12,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:33:12,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:33:12,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:33:12,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:33:12,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:33:12,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:33:12,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:33:12,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:33:12,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:33:12,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:33:12,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:33:12,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:33:12,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:33:12,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:33:12,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:33:12,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:33:12,459 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-06 17:33:12,485 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:33:12,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:33:12,486 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:33:12,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:33:12,487 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:33:12,487 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:33:12,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:33:12,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:33:12,488 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:33:12,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:33:12,489 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:33:12,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:33:12,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:33:12,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:33:12,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:33:12,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:33:12,490 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 17:33:12,490 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 17:33:12,490 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 17:33:12,490 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:33:12,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:33:12,491 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:33:12,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:33:12,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:33:12,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:33:12,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:33:12,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:33:12,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:33:12,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:33:12,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:33:12,493 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 17:33:12,493 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 17:33:12,493 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:33:12,493 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:33:12,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:33:12,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:33:12,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 17:33:12,494 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_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 [2021-12-06 17:33:12,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:33:12,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:33:12,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:33:12,749 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:33:12,750 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:33:12,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2021-12-06 17:33:12,794 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/data/b863ce937/c8a35bd801234764a769425aa02529f2/FLAGca872b98c [2021-12-06 17:33:13,181 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:33:13,182 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2021-12-06 17:33:13,188 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/data/b863ce937/c8a35bd801234764a769425aa02529f2/FLAGca872b98c [2021-12-06 17:33:13,198 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/data/b863ce937/c8a35bd801234764a769425aa02529f2 [2021-12-06 17:33:13,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:33:13,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:33:13,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:33:13,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:33:13,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:33:13,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:33:13" (1/1) ... [2021-12-06 17:33:13,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d5ed4f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:13, skipping insertion in model container [2021-12-06 17:33:13,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:33:13" (1/1) ... [2021-12-06 17:33:13,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:33:13,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:33:13,333 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_00d80ccc-702b-4928-a912-de8cebc0a168/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2021-12-06 17:33:13,342 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:33:13,352 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:33:13,369 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_00d80ccc-702b-4928-a912-de8cebc0a168/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2021-12-06 17:33:13,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:33:13,390 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:33:13,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:13 WrapperNode [2021-12-06 17:33:13,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:33:13,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:33:13,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:33:13,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:33:13,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:13" (1/1) ... [2021-12-06 17:33:13,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:13" (1/1) ... [2021-12-06 17:33:13,431 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2021-12-06 17:33:13,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:33:13,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:33:13,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:33:13,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:33:13,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:13" (1/1) ... [2021-12-06 17:33:13,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:13" (1/1) ... [2021-12-06 17:33:13,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:13" (1/1) ... [2021-12-06 17:33:13,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:13" (1/1) ... [2021-12-06 17:33:13,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:13" (1/1) ... [2021-12-06 17:33:13,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:13" (1/1) ... [2021-12-06 17:33:13,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:13" (1/1) ... [2021-12-06 17:33:13,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:33:13,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:33:13,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:33:13,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:33:13,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:13" (1/1) ... [2021-12-06 17:33:13,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:33:13,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:33:13,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:33:13,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:33:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:33:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 17:33:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:33:13,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:33:13,565 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:33:13,567 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:33:14,097 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:33:14,102 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:33:14,102 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 17:33:14,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:33:14 BoogieIcfgContainer [2021-12-06 17:33:14,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:33:14,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:33:14,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:33:14,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:33:14,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:33:13" (1/3) ... [2021-12-06 17:33:14,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc05d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:33:14, skipping insertion in model container [2021-12-06 17:33:14,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:13" (2/3) ... [2021-12-06 17:33:14,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc05d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:33:14, skipping insertion in model container [2021-12-06 17:33:14,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:33:14" (3/3) ... [2021-12-06 17:33:14,110 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div.i [2021-12-06 17:33:14,114 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:33:14,114 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:33:14,152 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:33:14,157 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=PETRI_NET, 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 [2021-12-06 17:33:14,157 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:33:14,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2021-12-06 17:33:14,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 17:33:14,171 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:33:14,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 17:33:14,172 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:33:14,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:33:14,176 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-12-06 17:33:14,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:33:14,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136111610] [2021-12-06 17:33:14,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:33:14,185 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:33:14,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:33:14,186 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:33:14,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 17:33:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:33:14,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 17:33:14,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:33:15,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:33:15,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:33:15,089 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:33:15,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136111610] [2021-12-06 17:33:15,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136111610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:33:15,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:33:15,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:33:15,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261647243] [2021-12-06 17:33:15,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:33:15,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:33:15,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:33:15,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:33:15,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:33:15,121 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:33:15,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:33:15,781 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2021-12-06 17:33:15,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:33:15,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 17:33:15,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:33:15,867 INFO L225 Difference]: With dead ends: 20 [2021-12-06 17:33:15,868 INFO L226 Difference]: Without dead ends: 8 [2021-12-06 17:33:15,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:33:15,875 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:33:15,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 15 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 17:33:15,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-12-06 17:33:15,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-12-06 17:33:15,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2021-12-06 17:33:15,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-12-06 17:33:15,899 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-12-06 17:33:15,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:33:15,899 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-12-06 17:33:15,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:33:15,899 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-12-06 17:33:15,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 17:33:15,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:33:15,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:33:15,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:33:16,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:33:16,102 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:33:16,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:33:16,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2021-12-06 17:33:16,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:33:16,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445583527] [2021-12-06 17:33:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:33:16,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:33:16,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:33:16,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:33:16,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 17:33:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:33:16,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 17:33:16,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:33:19,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:33:19,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:33:25,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:33:25,673 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:33:25,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445583527] [2021-12-06 17:33:25,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445583527] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:33:25,674 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:33:25,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-12-06 17:33:25,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874232487] [2021-12-06 17:33:25,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:33:25,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:33:25,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:33:25,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:33:25,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:33:25,676 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:33:27,679 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:33:37,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:33:39,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:33:41,924 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:33:42,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:33:42,639 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-12-06 17:33:42,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:33:42,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-06 17:33:42,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:33:42,658 INFO L225 Difference]: With dead ends: 15 [2021-12-06 17:33:42,658 INFO L226 Difference]: Without dead ends: 11 [2021-12-06 17:33:42,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:33:42,660 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:33:42,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 9 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 13 Invalid, 4 Unknown, 0 Unchecked, 10.7s Time] [2021-12-06 17:33:42,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-12-06 17:33:42,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-12-06 17:33:42,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:33:42,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-12-06 17:33:42,664 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2021-12-06 17:33:42,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:33:42,664 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-12-06 17:33:42,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:33:42,664 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-12-06 17:33:42,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 17:33:42,665 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:33:42,668 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2021-12-06 17:33:42,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 17:33:42,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:33:42,870 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:33:42,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:33:42,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1922847381, now seen corresponding path program 2 times [2021-12-06 17:33:42,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:33:42,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770096531] [2021-12-06 17:33:42,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:33:42,875 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:33:42,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:33:42,878 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:33:42,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 17:33:43,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:33:43,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:33:43,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 17:33:43,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:34:07,339 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) |c_ULTIMATE.start_main_~x~0#1|) (= (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0) |c_ULTIMATE.start_main_~x1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-12-06 17:34:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 4 not checked. [2021-12-06 17:34:11,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:34:30,571 WARN L227 SmtUtils]: Spent 5.35s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 17:34:41,670 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-12-06 17:34:51,920 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2021-12-06 17:34:53,978 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2021-12-06 17:35:04,194 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-12-06 17:35:06,268 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-12-06 17:35:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 9 not checked. [2021-12-06 17:35:14,008 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:35:14,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770096531] [2021-12-06 17:35:14,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770096531] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:35:14,009 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:35:14,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-12-06 17:35:14,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617782929] [2021-12-06 17:35:14,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:35:14,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 17:35:14,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:35:14,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 17:35:14,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=80, Unknown=10, NotChecked=84, Total=210 [2021-12-06 17:35:14,011 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:35:16,022 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:35:18,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:35:22,443 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) (.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (and (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 .cse2))) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) |c_ULTIMATE.start_main_~x1~0#1|) (or (not (fp.eq |c_ULTIMATE.start_main_~x1~0#1| |c_ULTIMATE.start_main_~x~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x~0#1| .cse2)))) is different from true [2021-12-06 17:35:24,509 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0)) (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse0) .cse0))) (or (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-12-06 17:35:26,555 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-12-06 17:35:28,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:35:31,074 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) |c_ULTIMATE.start_main_~x~0#1|) (= (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0) |c_ULTIMATE.start_main_~x1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven) (or (not (fp.eq |c_ULTIMATE.start_main_~x1~0#1| |c_ULTIMATE.start_main_~x~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-12-06 17:35:33,262 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:35:35,286 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:35:35,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:35:35,742 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-12-06 17:35:35,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:35:35,742 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-06 17:35:35,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:35,743 INFO L225 Difference]: With dead ends: 16 [2021-12-06 17:35:35,743 INFO L226 Difference]: Without dead ends: 12 [2021-12-06 17:35:35,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 53.9s TimeCoverageRelationStatistics Valid=44, Invalid=84, Unknown=14, NotChecked=200, Total=342 [2021-12-06 17:35:35,745 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:35,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 19 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 5 Unknown, 34 Unchecked, 11.3s Time] [2021-12-06 17:35:35,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-12-06 17:35:35,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-06 17:35:35,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:35:35,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-12-06 17:35:35,749 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2021-12-06 17:35:35,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:35,749 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-12-06 17:35:35,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:35:35,749 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-12-06 17:35:35,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 17:35:35,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:35,750 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:35,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-06 17:35:35,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:35:35,952 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:35,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:35,954 INFO L85 PathProgramCache]: Analyzing trace with hash 522938704, now seen corresponding path program 3 times [2021-12-06 17:35:35,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:35:35,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630283637] [2021-12-06 17:35:35,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 17:35:35,956 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:35:35,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:35:35,959 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:35:35,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 17:35:36,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 17:35:36,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:35:36,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 17:35:36,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:35:59,020 WARN L227 SmtUtils]: Spent 10.63s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 17:36:10,537 WARN L838 $PredicateComparison]: unable to prove that (and (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x~0#1|) (exists ((|v_ULTIMATE.start_main_~x~0#1_14| (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_14| ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))))) (and (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_14|)) (= .cse0 |c_ULTIMATE.start_main_~x~0#1|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-12-06 17:36:56,516 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_14| (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse1 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_14| .cse2))) (and (let ((.cse0 (fp.eq .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (not .cse0)) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse0))) (not (fp.eq .cse1 |v_ULTIMATE.start_main_~x~0#1_14|)) (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse2) .cse1))))) is different from false [2021-12-06 17:36:58,546 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_14| (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse1 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_14| .cse2))) (and (let ((.cse0 (fp.eq .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (not .cse0)) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse0))) (not (fp.eq .cse1 |v_ULTIMATE.start_main_~x~0#1_14|)) (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse2) .cse1))))) is different from true [2021-12-06 17:37:15,064 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_14| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_14| .cse1))) (and (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_14|)) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2021-12-06 17:37:17,094 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_14| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_14| .cse1))) (and (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_14|)) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2021-12-06 17:37:17,094 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 17:37:17,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:37:17,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:37:17,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630283637] [2021-12-06 17:37:17,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630283637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:37:17,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:37:17,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:37:17,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883154264] [2021-12-06 17:37:17,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:37:17,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:37:17,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:37:17,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:37:17,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=10, Unknown=6, NotChecked=24, Total=56 [2021-12-06 17:37:17,096 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:37:18,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:37:18,214 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-12-06 17:37:18,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:37:18,258 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-06 17:37:18,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:37:18,258 INFO L225 Difference]: With dead ends: 12 [2021-12-06 17:37:18,259 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 17:37:18,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=16, Invalid=10, Unknown=6, NotChecked=24, Total=56 [2021-12-06 17:37:18,260 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:37:18,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 20 Unchecked, 1.1s Time] [2021-12-06 17:37:18,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 17:37:18,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 17:37:18,261 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) [2021-12-06 17:37:18,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 17:37:18,261 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-12-06 17:37:18,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:37:18,262 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 17:37:18,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:37:18,262 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 17:37:18,262 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 17:37:18,264 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 17:37:18,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 17:37:18,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:37:18,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 17:39:01,374 WARN L227 SmtUtils]: Spent 1.71m on a formula simplification. DAG size of input: 65 DAG size of output: 17 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-12-06 17:39:01,387 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-06 17:39:01,388 INFO L854 garLoopResultBuilder]: At program point L23-2(lines 23 27) the Hoare annotation is: (and (= (fp.div currentRoundingMode |ULTIMATE.start_main_~x~0#1| ((_ to_fp 8 24) currentRoundingMode (/ 5.0 2.0))) |ULTIMATE.start_main_~x1~0#1|) (exists ((|v_ULTIMATE.start_main_~x~0#1_14| (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_14| ((_ to_fp 8 24) currentRoundingMode (/ 5.0 2.0))))) (and (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_14|)) (= .cse0 |ULTIMATE.start_main_~x~0#1|)))) (= currentRoundingMode roundNearestTiesToEven)) [2021-12-06 17:39:01,388 INFO L858 garLoopResultBuilder]: For program point L23-3(lines 23 27) no Hoare annotation was computed. [2021-12-06 17:39:01,388 INFO L858 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-12-06 17:39:01,388 INFO L858 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-12-06 17:39:01,392 INFO L854 garLoopResultBuilder]: At program point L13-3(line 13) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2021-12-06 17:39:01,392 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-06 17:39:01,392 INFO L854 garLoopResultBuilder]: At program point L30(lines 18 31) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2021-12-06 17:39:01,392 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-06 17:39:01,392 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-06 17:39:01,393 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-12-06 17:39:01,395 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1] [2021-12-06 17:39:01,397 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 17:39:01,403 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-06 17:39:01,407 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-06 17:39:01,408 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_14,QUANTIFIED] [2021-12-06 17:39:01,408 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_14,QUANTIFIED] [2021-12-06 17:39:01,409 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_14,QUANTIFIED] [2021-12-06 17:39:01,409 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-06 17:39:01,410 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_14,QUANTIFIED] [2021-12-06 17:39:01,410 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_14,QUANTIFIED] [2021-12-06 17:39:01,410 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_14,QUANTIFIED] [2021-12-06 17:39:01,410 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-06 17:39:01,412 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-06 17:39:01,412 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-06 17:39:01,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:39:01 BoogieIcfgContainer [2021-12-06 17:39:01,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 17:39:01,413 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 17:39:01,413 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 17:39:01,413 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 17:39:01,413 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:33:14" (3/4) ... [2021-12-06 17:39:01,416 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 17:39:01,423 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-12-06 17:39:01,423 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-06 17:39:01,423 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 17:39:01,423 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 17:39:01,441 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.div~FLOAT(unknown-currentRoundingMode-unknown, x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x1 && (\exists v_ULTIMATE.start_main_~x~0#1_14 : C_FLOAT :: !~fp.eq~FLOAT(~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0#1_14, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)), v_ULTIMATE.start_main_~x~0#1_14) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0#1_14, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x)) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-12-06 17:39:01,445 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 17:39:01,445 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 17:39:01,446 INFO L158 Benchmark]: Toolchain (without parser) took 348244.16ms. Allocated memory was 56.6MB in the beginning and 98.6MB in the end (delta: 41.9MB). Free memory was 35.0MB in the beginning and 77.4MB in the end (delta: -42.3MB). Peak memory consumption was 1.0MB. Max. memory is 16.1GB. [2021-12-06 17:39:01,446 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 56.6MB. Free memory is still 37.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:39:01,446 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.04ms. Allocated memory was 56.6MB in the beginning and 98.6MB in the end (delta: 41.9MB). Free memory was 34.9MB in the beginning and 82.8MB in the end (delta: -47.9MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2021-12-06 17:39:01,446 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.81ms. Allocated memory is still 98.6MB. Free memory was 82.3MB in the beginning and 81.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:39:01,447 INFO L158 Benchmark]: Boogie Preprocessor took 22.91ms. Allocated memory is still 98.6MB. Free memory was 81.2MB in the beginning and 80.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:39:01,447 INFO L158 Benchmark]: RCFGBuilder took 647.74ms. Allocated memory is still 98.6MB. Free memory was 80.1MB in the beginning and 71.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 17:39:01,447 INFO L158 Benchmark]: TraceAbstraction took 347307.28ms. Allocated memory is still 98.6MB. Free memory was 71.1MB in the beginning and 79.5MB in the end (delta: -8.3MB). Peak memory consumption was 37.4MB. Max. memory is 16.1GB. [2021-12-06 17:39:01,447 INFO L158 Benchmark]: Witness Printer took 32.45ms. Allocated memory is still 98.6MB. Free memory was 79.5MB in the beginning and 77.4MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 17:39:01,449 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 56.6MB. Free memory is still 37.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 188.04ms. Allocated memory was 56.6MB in the beginning and 98.6MB in the end (delta: 41.9MB). Free memory was 34.9MB in the beginning and 82.8MB in the end (delta: -47.9MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.81ms. Allocated memory is still 98.6MB. Free memory was 82.3MB in the beginning and 81.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.91ms. Allocated memory is still 98.6MB. Free memory was 81.2MB in the beginning and 80.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 647.74ms. Allocated memory is still 98.6MB. Free memory was 80.1MB in the beginning and 71.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 347307.28ms. Allocated memory is still 98.6MB. Free memory was 71.1MB in the beginning and 79.5MB in the end (delta: -8.3MB). Peak memory consumption was 37.4MB. Max. memory is 16.1GB. * Witness Printer took 32.45ms. Allocated memory is still 98.6MB. Free memory was 79.5MB in the beginning and 77.4MB in the end (delta: 2.1MB). 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_14,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_main_~x~0#1_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - 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: 13]: 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, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 347.2s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 40.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 102.9s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 9 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 23.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 23.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 54 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 18 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 96.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=3, InterpolantAutomatonStates: 27, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 37 HoareAnnotationTreeSize, 3 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 402 FormulaSimplificationTreeSizeReductionInter, 102.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 202.0s InterpolantComputationTime, 34 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 45 ConstructedInterpolants, 4 QuantifiedInterpolants, 564 SizeOfPredicates, 17 NumberOfNonLiveVariables, 107 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 15/37 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2021-12-06 17:39:01,454 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-06 17:39:01,454 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 23]: Loop Invariant [2021-12-06 17:39:01,455 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_14,QUANTIFIED] [2021-12-06 17:39:01,455 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_14,QUANTIFIED] [2021-12-06 17:39:01,455 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_14,QUANTIFIED] [2021-12-06 17:39:01,455 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-06 17:39:01,455 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_14,QUANTIFIED] [2021-12-06 17:39:01,455 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_14,QUANTIFIED] [2021-12-06 17:39:01,455 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_14,QUANTIFIED] [2021-12-06 17:39:01,455 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (~fp.div~FLOAT(unknown-currentRoundingMode-unknown, x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x1 && (\exists v_ULTIMATE.start_main_~x~0#1_14 : C_FLOAT :: !~fp.eq~FLOAT(~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0#1_14, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)), v_ULTIMATE.start_main_~x~0#1_14) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0#1_14, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x)) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 13]: Loop Invariant [2021-12-06 17:39:01,456 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-06 17:39:01,456 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2021-12-06 17:39:01,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d80ccc-702b-4928-a912-de8cebc0a168/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE