./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 aa004690edfde808b1aefac96308d2a9e2df62056aeddc89c51bd2015ab29125 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 16:27:00,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 16:27:00,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 16:27:00,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 16:27:00,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 16:27:00,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 16:27:00,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 16:27:00,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 16:27:00,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 16:27:00,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 16:27:00,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 16:27:00,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 16:27:00,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 16:27:00,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 16:27:00,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 16:27:00,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 16:27:00,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 16:27:00,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 16:27:00,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 16:27:00,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 16:27:00,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 16:27:00,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 16:27:00,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 16:27:00,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 16:27:00,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 16:27:00,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 16:27:00,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 16:27:00,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 16:27:00,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 16:27:00,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 16:27:00,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 16:27:00,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 16:27:00,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 16:27:00,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 16:27:00,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 16:27:00,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 16:27:00,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 16:27:00,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 16:27:00,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 16:27:00,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 16:27:00,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 16:27:00,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 16:27:00,455 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 16:27:00,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 16:27:00,456 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 16:27:00,456 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 16:27:00,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 16:27:00,457 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 16:27:00,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 16:27:00,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 16:27:00,458 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 16:27:00,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 16:27:00,459 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 16:27:00,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 16:27:00,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 16:27:00,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 16:27:00,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 16:27:00,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 16:27:00,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 16:27:00,460 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 16:27:00,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 16:27:00,461 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 16:27:00,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 16:27:00,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 16:27:00,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 16:27:00,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 16:27:00,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:27:00,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 16:27:00,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 16:27:00,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 16:27:00,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 16:27:00,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 16:27:00,464 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 16:27:00,464 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 16:27:00,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 16:27:00,465 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa004690edfde808b1aefac96308d2a9e2df62056aeddc89c51bd2015ab29125 [2022-02-20 16:27:00,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 16:27:00,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 16:27:00,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 16:27:00,644 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 16:27:00,645 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 16:27:00,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2022-02-20 16:27:00,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bc6215d1/9f1eace56da749489a6cc650d7dac58c/FLAG89ce66a61 [2022-02-20 16:27:01,008 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 16:27:01,009 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2022-02-20 16:27:01,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bc6215d1/9f1eace56da749489a6cc650d7dac58c/FLAG89ce66a61 [2022-02-20 16:27:01,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bc6215d1/9f1eace56da749489a6cc650d7dac58c [2022-02-20 16:27:01,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 16:27:01,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 16:27:01,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 16:27:01,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 16:27:01,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 16:27:01,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:27:01" (1/1) ... [2022-02-20 16:27:01,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c00818e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:01, skipping insertion in model container [2022-02-20 16:27:01,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:27:01" (1/1) ... [2022-02-20 16:27:01,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 16:27:01,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 16:27:01,578 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i[808,821] [2022-02-20 16:27:01,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:27:01,592 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 16:27:01,600 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i[808,821] [2022-02-20 16:27:01,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:27:01,610 INFO L208 MainTranslator]: Completed translation [2022-02-20 16:27:01,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:01 WrapperNode [2022-02-20 16:27:01,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 16:27:01,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 16:27:01,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 16:27:01,612 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 16:27:01,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:01" (1/1) ... [2022-02-20 16:27:01,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:01" (1/1) ... [2022-02-20 16:27:01,634 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 26 [2022-02-20 16:27:01,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 16:27:01,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 16:27:01,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 16:27:01,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 16:27:01,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:01" (1/1) ... [2022-02-20 16:27:01,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:01" (1/1) ... [2022-02-20 16:27:01,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:01" (1/1) ... [2022-02-20 16:27:01,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:01" (1/1) ... [2022-02-20 16:27:01,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:01" (1/1) ... [2022-02-20 16:27:01,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:01" (1/1) ... [2022-02-20 16:27:01,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:01" (1/1) ... [2022-02-20 16:27:01,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 16:27:01,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 16:27:01,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 16:27:01,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 16:27:01,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:01" (1/1) ... [2022-02-20 16:27:01,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:27:01,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 16:27:01,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 16:27:01,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 16:27:01,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 16:27:01,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 16:27:01,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 16:27:01,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 16:27:01,757 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 16:27:01,759 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 16:27:01,820 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 16:27:01,825 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 16:27:01,831 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 16:27:01,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:27:01 BoogieIcfgContainer [2022-02-20 16:27:01,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 16:27:01,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 16:27:01,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 16:27:01,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 16:27:01,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 04:27:01" (1/3) ... [2022-02-20 16:27:01,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6330a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:27:01, skipping insertion in model container [2022-02-20 16:27:01,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:01" (2/3) ... [2022-02-20 16:27:01,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6330a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:27:01, skipping insertion in model container [2022-02-20 16:27:01,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:27:01" (3/3) ... [2022-02-20 16:27:01,840 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i [2022-02-20 16:27:01,845 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 16:27:01,845 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 16:27:01,884 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 16:27:01,888 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 [2022-02-20 16:27:01,888 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 16:27:01,903 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) [2022-02-20 16:27:01,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-02-20 16:27:01,907 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:27:01,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-02-20 16:27:01,908 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:27:01,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:27:01,911 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2022-02-20 16:27:01,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 16:27:01,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119340904] [2022-02-20 16:27:01,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:27:01,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 16:27:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:27:01,985 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 16:27:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:27:02,006 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 16:27:02,007 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 16:27:02,008 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-20 16:27:02,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 16:27:02,014 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-20 16:27:02,017 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 16:27:02,044 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-02-20 16:27:02,045 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-02-20 16:27:02,045 WARN L170 areAnnotationChecker]: L23-2 has no Hoare annotation [2022-02-20 16:27:02,045 WARN L170 areAnnotationChecker]: L23-2 has no Hoare annotation [2022-02-20 16:27:02,045 WARN L170 areAnnotationChecker]: L23-2 has no Hoare annotation [2022-02-20 16:27:02,045 WARN L170 areAnnotationChecker]: L23-3 has no Hoare annotation [2022-02-20 16:27:02,045 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-02-20 16:27:02,045 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-02-20 16:27:02,045 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2022-02-20 16:27:02,045 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2022-02-20 16:27:02,046 WARN L170 areAnnotationChecker]: L13-3 has no Hoare annotation [2022-02-20 16:27:02,046 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2022-02-20 16:27:02,046 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-02-20 16:27:02,046 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-02-20 16:27:02,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.02 04:27:02 BoogieIcfgContainer [2022-02-20 16:27:02,047 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-20 16:27:02,047 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-20 16:27:02,048 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-20 16:27:02,048 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-20 16:27:02,048 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:27:01" (3/4) ... [2022-02-20 16:27:02,051 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-02-20 16:27:02,051 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-20 16:27:02,052 INFO L158 Benchmark]: Toolchain (without parser) took 610.25ms. Allocated memory was 94.4MB in the beginning and 127.9MB in the end (delta: 33.6MB). Free memory was 62.1MB in the beginning and 104.6MB in the end (delta: -42.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:27:02,053 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 94.4MB. Free memory was 49.8MB in the beginning and 49.8MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:27:02,053 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.20ms. Allocated memory is still 94.4MB. Free memory was 61.9MB in the beginning and 70.7MB in the end (delta: -8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-20 16:27:02,054 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.48ms. Allocated memory is still 94.4MB. Free memory was 70.7MB in the beginning and 69.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 16:27:02,054 INFO L158 Benchmark]: Boogie Preprocessor took 14.33ms. Allocated memory is still 94.4MB. Free memory was 69.1MB in the beginning and 68.2MB in the end (delta: 895.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:27:02,054 INFO L158 Benchmark]: RCFGBuilder took 184.23ms. Allocated memory is still 94.4MB. Free memory was 68.2MB in the beginning and 59.8MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-02-20 16:27:02,055 INFO L158 Benchmark]: TraceAbstraction took 211.49ms. Allocated memory was 94.4MB in the beginning and 127.9MB in the end (delta: 33.6MB). Free memory was 59.2MB in the beginning and 105.0MB in the end (delta: -45.8MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2022-02-20 16:27:02,061 INFO L158 Benchmark]: Witness Printer took 3.59ms. Allocated memory is still 127.9MB. Free memory was 104.9MB in the beginning and 104.6MB in the end (delta: 319.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:27:02,063 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 94.4MB. Free memory was 49.8MB in the beginning and 49.8MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 165.20ms. Allocated memory is still 94.4MB. Free memory was 61.9MB in the beginning and 70.7MB in the end (delta: -8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.48ms. Allocated memory is still 94.4MB. Free memory was 70.7MB in the beginning and 69.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.33ms. Allocated memory is still 94.4MB. Free memory was 69.1MB in the beginning and 68.2MB in the end (delta: 895.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 184.23ms. Allocated memory is still 94.4MB. Free memory was 68.2MB in the beginning and 59.8MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 211.49ms. Allocated memory was 94.4MB in the beginning and 127.9MB in the end (delta: 33.6MB). Free memory was 59.2MB in the beginning and 105.0MB in the end (delta: -45.8MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * Witness Printer took 3.59ms. Allocated memory is still 127.9MB. Free memory was 104.9MB in the beginning and 104.6MB in the end (delta: 319.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 29, overapproximation of someBinaryArithmeticDOUBLEoperation at line 21. Possible FailurePath: [L20] double x = 1.0; [L21] double x1 = x/1.6; 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 [2022-02-20 16:27:02,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 aa004690edfde808b1aefac96308d2a9e2df62056aeddc89c51bd2015ab29125 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 16:27:03,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 16:27:03,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 16:27:03,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 16:27:03,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 16:27:03,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 16:27:03,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 16:27:03,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 16:27:03,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 16:27:03,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 16:27:03,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 16:27:03,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 16:27:03,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 16:27:03,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 16:27:03,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 16:27:03,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 16:27:03,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 16:27:03,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 16:27:03,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 16:27:03,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 16:27:03,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 16:27:03,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 16:27:03,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 16:27:03,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 16:27:03,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 16:27:03,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 16:27:03,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 16:27:03,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 16:27:03,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 16:27:03,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 16:27:03,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 16:27:03,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 16:27:03,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 16:27:03,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 16:27:03,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 16:27:03,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 16:27:03,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 16:27:03,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 16:27:03,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 16:27:03,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 16:27:03,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 16:27:03,905 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-02-20 16:27:03,941 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 16:27:03,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 16:27:03,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 16:27:03,943 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 16:27:03,943 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 16:27:03,943 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 16:27:03,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 16:27:03,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 16:27:03,945 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 16:27:03,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 16:27:03,945 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 16:27:03,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 16:27:03,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 16:27:03,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 16:27:03,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 16:27:03,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 16:27:03,946 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-02-20 16:27:03,947 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-02-20 16:27:03,947 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-02-20 16:27:03,947 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 16:27:03,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 16:27:03,947 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 16:27:03,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 16:27:03,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 16:27:03,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 16:27:03,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 16:27:03,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:27:03,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 16:27:03,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 16:27:03,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 16:27:03,949 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-02-20 16:27:03,949 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-02-20 16:27:03,949 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 16:27:03,949 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 16:27:03,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 16:27:03,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-20 16:27:03,950 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa004690edfde808b1aefac96308d2a9e2df62056aeddc89c51bd2015ab29125 [2022-02-20 16:27:04,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 16:27:04,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 16:27:04,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 16:27:04,227 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 16:27:04,227 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 16:27:04,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2022-02-20 16:27:04,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b66cebd2d/79e8cdc680634617a828d42084c9490d/FLAGba8b31157 [2022-02-20 16:27:04,665 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 16:27:04,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2022-02-20 16:27:04,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b66cebd2d/79e8cdc680634617a828d42084c9490d/FLAGba8b31157 [2022-02-20 16:27:05,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b66cebd2d/79e8cdc680634617a828d42084c9490d [2022-02-20 16:27:05,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 16:27:05,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 16:27:05,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 16:27:05,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 16:27:05,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 16:27:05,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:27:05" (1/1) ... [2022-02-20 16:27:05,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e475f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:05, skipping insertion in model container [2022-02-20 16:27:05,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:27:05" (1/1) ... [2022-02-20 16:27:05,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 16:27:05,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 16:27:05,235 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i[808,821] [2022-02-20 16:27:05,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:27:05,276 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 16:27:05,285 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i[808,821] [2022-02-20 16:27:05,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:27:05,306 INFO L208 MainTranslator]: Completed translation [2022-02-20 16:27:05,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:05 WrapperNode [2022-02-20 16:27:05,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 16:27:05,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 16:27:05,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 16:27:05,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 16:27:05,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:05" (1/1) ... [2022-02-20 16:27:05,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:05" (1/1) ... [2022-02-20 16:27:05,337 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2022-02-20 16:27:05,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 16:27:05,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 16:27:05,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 16:27:05,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 16:27:05,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:05" (1/1) ... [2022-02-20 16:27:05,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:05" (1/1) ... [2022-02-20 16:27:05,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:05" (1/1) ... [2022-02-20 16:27:05,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:05" (1/1) ... [2022-02-20 16:27:05,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:05" (1/1) ... [2022-02-20 16:27:05,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:05" (1/1) ... [2022-02-20 16:27:05,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:05" (1/1) ... [2022-02-20 16:27:05,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 16:27:05,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 16:27:05,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 16:27:05,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 16:27:05,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:05" (1/1) ... [2022-02-20 16:27:05,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:27:05,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 16:27:05,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 16:27:05,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 16:27:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 16:27:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-02-20 16:27:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 16:27:05,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 16:27:05,510 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 16:27:05,512 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 16:27:09,906 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 16:27:09,910 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 16:27:09,910 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 16:27:09,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:27:09 BoogieIcfgContainer [2022-02-20 16:27:09,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 16:27:09,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 16:27:09,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 16:27:09,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 16:27:09,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 04:27:05" (1/3) ... [2022-02-20 16:27:09,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d51934b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:27:09, skipping insertion in model container [2022-02-20 16:27:09,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:27:05" (2/3) ... [2022-02-20 16:27:09,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d51934b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:27:09, skipping insertion in model container [2022-02-20 16:27:09,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:27:09" (3/3) ... [2022-02-20 16:27:09,922 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i [2022-02-20 16:27:09,926 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 16:27:09,927 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 16:27:09,982 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 16:27:09,999 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 [2022-02-20 16:27:10,000 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 16:27:10,010 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) [2022-02-20 16:27:10,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-02-20 16:27:10,016 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:27:10,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-02-20 16:27:10,017 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:27:10,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:27:10,022 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2022-02-20 16:27:10,031 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 16:27:10,031 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803823795] [2022-02-20 16:27:10,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:27:10,032 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 16:27:10,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 16:27:10,034 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 16:27:10,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-02-20 16:27:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:27:10,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-20 16:27:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:27:10,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 16:27:15,790 INFO L290 TraceCheckUtils]: 0: Hoare triple {14#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0bv32, 0bv32;assume 0bv1 == #valid[0bv32];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;call #Ultimate.allocInit(2bv32, 1bv32);call write~init~intINTTYPE1(48bv8, 1bv32, 0bv32, 1bv32);call write~init~intINTTYPE1(0bv8, 1bv32, 1bv32, 1bv32);call #Ultimate.allocInit(17bv32, 2bv32); {19#(= currentRoundingMode roundNearestTiesToEven)} is VALID [2022-02-20 16:27:15,792 INFO L290 TraceCheckUtils]: 1: Hoare triple {19#(= currentRoundingMode roundNearestTiesToEven)} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~x1~0#1;main_~x~0#1 := ~to_fp~DOUBLE(currentRoundingMode, 1.0);main_~x1~0#1 := ~fp.div~DOUBLE(currentRoundingMode, main_~x~0#1, ~to_fp~DOUBLE(currentRoundingMode, 1.6)); {23#(and (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~x1~0#1| (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))))} is VALID [2022-02-20 16:27:15,792 INFO L290 TraceCheckUtils]: 2: Hoare triple {23#(and (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~x1~0#1| (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))))} assume !!~fp.eq~DOUBLE(main_~x1~0#1, main_~x~0#1); {15#false} is VALID [2022-02-20 16:27:15,793 INFO L290 TraceCheckUtils]: 3: Hoare triple {15#false} assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if ~fp.eq~DOUBLE(main_~x~0#1, ~convertINTToDOUBLE(currentRoundingMode, 0bv32)) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; {15#false} is VALID [2022-02-20 16:27:15,793 INFO L290 TraceCheckUtils]: 4: Hoare triple {15#false} assume 0bv32 == __VERIFIER_assert_~cond#1; {15#false} is VALID [2022-02-20 16:27:15,793 INFO L290 TraceCheckUtils]: 5: Hoare triple {15#false} assume !false; {15#false} is VALID [2022-02-20 16:27:15,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 16:27:15,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 16:27:15,795 INFO L144 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-02-20 16:27:15,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803823795] [2022-02-20 16:27:15,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803823795] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 16:27:15,796 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 16:27:15,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-20 16:27:15,797 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852476392] [2022-02-20 16:27:15,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 16:27:15,801 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 [2022-02-20 16:27:15,802 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 16:27:15,804 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 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) [2022-02-20 16:27:18,554 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:27:18,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-20 16:27:18,555 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-02-20 16:27:18,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-20 16:27:18,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-20 16:27:18,596 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) [2022-02-20 16:27:26,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-20 16:27:37,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:27:37,160 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2022-02-20 16:27:37,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-20 16:27:37,161 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 [2022-02-20 16:27:37,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 16:27:37,162 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-02-20 16:27:37,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2022-02-20 16:27:37,165 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-02-20 16:27:37,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2022-02-20 16:27:37,169 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 24 transitions. [2022-02-20 16:27:40,800 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:27:40,804 INFO L225 Difference]: With dead ends: 20 [2022-02-20 16:27:40,805 INFO L226 Difference]: Without dead ends: 8 [2022-02-20 16:27:40,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-20 16:27:40,809 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s 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, 3.8s IncrementalHoareTripleChecker+Time [2022-02-20 16:27:40,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 15 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-02-20 16:27:40,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-02-20 16:27:40,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-02-20 16:27:40,827 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 16:27:40,828 INFO L82 GeneralOperation]: Start isEquivalent. First operand 8 states. Second 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) [2022-02-20 16:27:40,828 INFO L74 IsIncluded]: Start isIncluded. First operand 8 states. Second 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) [2022-02-20 16:27:40,828 INFO L87 Difference]: Start difference. First operand 8 states. Second 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) [2022-02-20 16:27:40,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:27:40,830 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2022-02-20 16:27:40,830 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-02-20 16:27:40,830 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:27:40,830 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:27:40,830 INFO L74 IsIncluded]: Start isIncluded. First 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) Second operand 8 states. [2022-02-20 16:27:40,831 INFO L87 Difference]: Start difference. First 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) Second operand 8 states. [2022-02-20 16:27:40,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:27:40,831 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2022-02-20 16:27:40,832 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-02-20 16:27:40,832 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:27:40,832 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:27:40,832 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 16:27:40,832 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 16:27:40,832 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) [2022-02-20 16:27:40,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-02-20 16:27:40,834 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2022-02-20 16:27:40,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 16:27:40,834 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-02-20 16:27:40,834 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) [2022-02-20 16:27:40,835 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-02-20 16:27:40,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-02-20 16:27:40,835 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:27:40,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:27:40,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-02-20 16:27:41,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 16:27:41,040 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:27:41,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:27:41,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2022-02-20 16:27:41,041 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 16:27:41,041 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3219653] [2022-02-20 16:27:41,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:27:41,041 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 16:27:41,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 16:27:41,042 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 16:27:41,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-02-20 16:27:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:27:42,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-20 16:27:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:27:42,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 16:27:54,938 INFO L290 TraceCheckUtils]: 0: Hoare triple {89#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0bv32, 0bv32;assume 0bv1 == #valid[0bv32];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;call #Ultimate.allocInit(2bv32, 1bv32);call write~init~intINTTYPE1(48bv8, 1bv32, 0bv32, 1bv32);call write~init~intINTTYPE1(0bv8, 1bv32, 1bv32, 1bv32);call #Ultimate.allocInit(17bv32, 2bv32); {94#(= currentRoundingMode roundNearestTiesToEven)} is VALID [2022-02-20 16:27:54,939 INFO L290 TraceCheckUtils]: 1: Hoare triple {94#(= currentRoundingMode roundNearestTiesToEven)} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~x1~0#1;main_~x~0#1 := ~to_fp~DOUBLE(currentRoundingMode, 1.0);main_~x1~0#1 := ~fp.div~DOUBLE(currentRoundingMode, main_~x~0#1, ~to_fp~DOUBLE(currentRoundingMode, 1.6)); {98#(and (= |ULTIMATE.start_main_~x1~0#1| (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0) ((_ to_fp 11 53) currentRoundingMode (/ 8.0 5.0)))) (= currentRoundingMode roundNearestTiesToEven))} is VALID [2022-02-20 16:27:54,940 INFO L290 TraceCheckUtils]: 2: Hoare triple {98#(and (= |ULTIMATE.start_main_~x1~0#1| (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0) ((_ to_fp 11 53) currentRoundingMode (/ 8.0 5.0)))) (= currentRoundingMode roundNearestTiesToEven))} assume !!!~fp.eq~DOUBLE(main_~x1~0#1, main_~x~0#1);main_~x~0#1 := main_~x1~0#1;main_~x1~0#1 := ~fp.div~DOUBLE(currentRoundingMode, main_~x~0#1, ~to_fp~DOUBLE(currentRoundingMode, 1.6)); {102#(and (= (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~x1~0#1| (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))))} is VALID [2022-02-20 16:27:54,941 INFO L290 TraceCheckUtils]: 3: Hoare triple {102#(and (= (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~x1~0#1| (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))))} assume !!~fp.eq~DOUBLE(main_~x1~0#1, main_~x~0#1); {90#false} is VALID [2022-02-20 16:27:54,941 INFO L290 TraceCheckUtils]: 4: Hoare triple {90#false} assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if ~fp.eq~DOUBLE(main_~x~0#1, ~convertINTToDOUBLE(currentRoundingMode, 0bv32)) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; {90#false} is VALID [2022-02-20 16:27:54,941 INFO L290 TraceCheckUtils]: 5: Hoare triple {90#false} assume 0bv32 == __VERIFIER_assert_~cond#1; {90#false} is VALID [2022-02-20 16:27:54,941 INFO L290 TraceCheckUtils]: 6: Hoare triple {90#false} assume !false; {90#false} is VALID [2022-02-20 16:27:54,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 16:27:54,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-20 16:28:03,632 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) |c_ULTIMATE.start_main_~x1~0#1|)) is different from false [2022-02-20 16:28:11,241 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2022-02-20 16:28:13,543 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2022-02-20 16:28:13,544 INFO L290 TraceCheckUtils]: 6: Hoare triple {90#false} assume !false; {90#false} is VALID [2022-02-20 16:28:13,544 INFO L290 TraceCheckUtils]: 5: Hoare triple {90#false} assume 0bv32 == __VERIFIER_assert_~cond#1; {90#false} is VALID [2022-02-20 16:28:13,544 INFO L290 TraceCheckUtils]: 4: Hoare triple {90#false} assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if ~fp.eq~DOUBLE(main_~x~0#1, ~convertINTToDOUBLE(currentRoundingMode, 0bv32)) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; {90#false} is VALID [2022-02-20 16:28:13,545 INFO L290 TraceCheckUtils]: 3: Hoare triple {124#(not (fp.eq |ULTIMATE.start_main_~x1~0#1| |ULTIMATE.start_main_~x~0#1|))} assume !!~fp.eq~DOUBLE(main_~x1~0#1, main_~x~0#1); {90#false} is VALID [2022-02-20 16:28:13,545 INFO L290 TraceCheckUtils]: 2: Hoare triple {128#(not (fp.eq (fp.div currentRoundingMode |ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) currentRoundingMode (/ 8.0 5.0))) |ULTIMATE.start_main_~x1~0#1|))} assume !!!~fp.eq~DOUBLE(main_~x1~0#1, main_~x~0#1);main_~x~0#1 := main_~x1~0#1;main_~x1~0#1 := ~fp.div~DOUBLE(currentRoundingMode, main_~x~0#1, ~to_fp~DOUBLE(currentRoundingMode, 1.6)); {124#(not (fp.eq |ULTIMATE.start_main_~x1~0#1| |ULTIMATE.start_main_~x~0#1|))} is VALID [2022-02-20 16:28:13,546 INFO L290 TraceCheckUtils]: 1: Hoare triple {132#(not (fp.eq (fp.div currentRoundingMode (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0) ((_ to_fp 11 53) currentRoundingMode (/ 8.0 5.0))) ((_ to_fp 11 53) currentRoundingMode (/ 8.0 5.0))) (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0) ((_ to_fp 11 53) currentRoundingMode (/ 8.0 5.0)))))} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~x1~0#1;main_~x~0#1 := ~to_fp~DOUBLE(currentRoundingMode, 1.0);main_~x1~0#1 := ~fp.div~DOUBLE(currentRoundingMode, main_~x~0#1, ~to_fp~DOUBLE(currentRoundingMode, 1.6)); {128#(not (fp.eq (fp.div currentRoundingMode |ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) currentRoundingMode (/ 8.0 5.0))) |ULTIMATE.start_main_~x1~0#1|))} is VALID [2022-02-20 16:28:13,547 INFO L290 TraceCheckUtils]: 0: Hoare triple {89#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0bv32, 0bv32;assume 0bv1 == #valid[0bv32];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;call #Ultimate.allocInit(2bv32, 1bv32);call write~init~intINTTYPE1(48bv8, 1bv32, 0bv32, 1bv32);call write~init~intINTTYPE1(0bv8, 1bv32, 1bv32, 1bv32);call #Ultimate.allocInit(17bv32, 2bv32); {132#(not (fp.eq (fp.div currentRoundingMode (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0) ((_ to_fp 11 53) currentRoundingMode (/ 8.0 5.0))) ((_ to_fp 11 53) currentRoundingMode (/ 8.0 5.0))) (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0) ((_ to_fp 11 53) currentRoundingMode (/ 8.0 5.0)))))} is VALID [2022-02-20 16:28:13,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-02-20 16:28:13,547 INFO L144 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-02-20 16:28:13,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3219653] [2022-02-20 16:28:13,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3219653] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-20 16:28:13,547 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-20 16:28:13,547 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-02-20 16:28:13,547 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944659767] [2022-02-20 16:28:13,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-20 16:28:13,549 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) 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 [2022-02-20 16:28:13,549 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 16:28:13,549 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 8 states, 8 states have (on average 1.375) 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) [2022-02-20 16:28:18,192 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 10 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. [2022-02-20 16:28:18,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-20 16:28:18,193 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-02-20 16:28:18,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-20 16:28:18,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=19, Unknown=4, NotChecked=18, Total=56 [2022-02-20 16:28:18,194 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.375) 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) [2022-02-20 16:28:20,569 WARN L860 $PredicateComparison]: unable to prove that (and (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-02-20 16:28:22,748 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0)) (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse0) |c_ULTIMATE.start_main_~x1~0#1|)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true