./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-esbmc-regression/digits_bad_for.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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/digits_bad_for.c -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 7a282122dc24d7edcdab0235b368fb11c8475c7879a31ec8b05ebbedfee80407 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 13:18:22,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 13:18:22,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 13:18:22,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 13:18:22,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 13:18:22,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 13:18:22,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 13:18:22,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 13:18:22,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 13:18:22,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 13:18:22,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 13:18:22,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 13:18:22,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 13:18:22,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 13:18:22,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 13:18:22,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 13:18:22,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 13:18:22,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 13:18:22,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 13:18:22,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 13:18:22,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 13:18:22,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 13:18:22,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 13:18:22,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 13:18:22,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 13:18:22,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 13:18:22,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 13:18:22,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 13:18:22,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 13:18:22,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 13:18:22,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 13:18:22,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 13:18:22,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 13:18:22,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 13:18:22,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 13:18:22,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 13:18:22,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 13:18:22,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 13:18:22,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 13:18:22,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 13:18:22,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 13:18:22,730 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 13:18:22,745 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 13:18:22,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 13:18:22,764 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 13:18:22,764 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 13:18:22,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 13:18:22,765 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 13:18:22,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 13:18:22,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 13:18:22,765 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 13:18:22,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 13:18:22,766 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 13:18:22,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 13:18:22,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 13:18:22,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 13:18:22,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 13:18:22,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 13:18:22,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 13:18:22,767 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 13:18:22,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 13:18:22,767 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 13:18:22,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 13:18:22,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 13:18:22,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 13:18:22,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 13:18:22,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:18:22,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 13:18:22,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 13:18:22,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 13:18:22,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 13:18:22,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 13:18:22,769 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 13:18:22,769 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 13:18:22,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 13:18:22,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 13:18:22,770 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a282122dc24d7edcdab0235b368fb11c8475c7879a31ec8b05ebbedfee80407 [2021-12-14 13:18:22,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 13:18:22,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 13:18:22,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 13:18:22,952 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 13:18:22,953 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 13:18:22,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/digits_bad_for.c [2021-12-14 13:18:22,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e222ba5a/cfe1eadbf889403da359759f4b7d0c3a/FLAG6ff89abb4 [2021-12-14 13:18:23,363 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 13:18:23,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_bad_for.c [2021-12-14 13:18:23,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e222ba5a/cfe1eadbf889403da359759f4b7d0c3a/FLAG6ff89abb4 [2021-12-14 13:18:23,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e222ba5a/cfe1eadbf889403da359759f4b7d0c3a [2021-12-14 13:18:23,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 13:18:23,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 13:18:23,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 13:18:23,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 13:18:23,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 13:18:23,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:18:23" (1/1) ... [2021-12-14 13:18:23,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d0d0ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:23, skipping insertion in model container [2021-12-14 13:18:23,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:18:23" (1/1) ... [2021-12-14 13:18:23,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 13:18:23,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 13:18:23,559 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/digits_bad_for.c[319,332] [2021-12-14 13:18:23,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:18:23,579 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 13:18:23,586 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/digits_bad_for.c[319,332] [2021-12-14 13:18:23,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:18:23,595 INFO L208 MainTranslator]: Completed translation [2021-12-14 13:18:23,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:23 WrapperNode [2021-12-14 13:18:23,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 13:18:23,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 13:18:23,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 13:18:23,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 13:18:23,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:23" (1/1) ... [2021-12-14 13:18:23,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:23" (1/1) ... [2021-12-14 13:18:23,617 INFO L137 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31 [2021-12-14 13:18:23,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 13:18:23,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 13:18:23,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 13:18:23,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 13:18:23,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:23" (1/1) ... [2021-12-14 13:18:23,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:23" (1/1) ... [2021-12-14 13:18:23,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:23" (1/1) ... [2021-12-14 13:18:23,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:23" (1/1) ... [2021-12-14 13:18:23,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:23" (1/1) ... [2021-12-14 13:18:23,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:23" (1/1) ... [2021-12-14 13:18:23,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:23" (1/1) ... [2021-12-14 13:18:23,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 13:18:23,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 13:18:23,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 13:18:23,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 13:18:23,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:23" (1/1) ... [2021-12-14 13:18:23,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:18:23,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:18:23,665 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) [2021-12-14 13:18:23,681 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 [2021-12-14 13:18:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 13:18:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 13:18:23,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 13:18:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 13:18:23,730 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 13:18:23,731 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 13:18:23,794 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 13:18:23,797 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 13:18:23,798 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 13:18:23,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:18:23 BoogieIcfgContainer [2021-12-14 13:18:23,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 13:18:23,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 13:18:23,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 13:18:23,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 13:18:23,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:18:23" (1/3) ... [2021-12-14 13:18:23,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e69c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:18:23, skipping insertion in model container [2021-12-14 13:18:23,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:23" (2/3) ... [2021-12-14 13:18:23,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e69c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:18:23, skipping insertion in model container [2021-12-14 13:18:23,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:18:23" (3/3) ... [2021-12-14 13:18:23,804 INFO L111 eAbstractionObserver]: Analyzing ICFG digits_bad_for.c [2021-12-14 13:18:23,807 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 13:18:23,807 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 13:18:23,841 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 13:18:23,845 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 [2021-12-14 13:18:23,859 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 13:18:23,867 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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) [2021-12-14 13:18:23,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-14 13:18:23,883 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:18:23,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-14 13:18:23,884 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:18:23,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:18:23,888 INFO L85 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2021-12-14 13:18:23,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:18:23,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223392966] [2021-12-14 13:18:23,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:18:23,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:18:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 13:18:23,973 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 13:18:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 13:18:24,009 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 13:18:24,010 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 13:18:24,012 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-14 13:18:24,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 13:18:24,017 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-14 13:18:24,020 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 13:18:24,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:18:24 BoogieIcfgContainer [2021-12-14 13:18:24,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 13:18:24,040 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 13:18:24,040 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 13:18:24,040 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 13:18:24,041 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:18:23" (3/4) ... [2021-12-14 13:18:24,044 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 13:18:24,044 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 13:18:24,046 INFO L158 Benchmark]: Toolchain (without parser) took 659.73ms. Allocated memory was 100.7MB in the beginning and 136.3MB in the end (delta: 35.7MB). Free memory was 77.8MB in the beginning and 88.3MB in the end (delta: -10.5MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2021-12-14 13:18:24,047 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 100.7MB. Free memory was 62.2MB in the beginning and 62.1MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:18:24,048 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.33ms. Allocated memory was 100.7MB in the beginning and 136.3MB in the end (delta: 35.7MB). Free memory was 77.5MB in the beginning and 113.0MB in the end (delta: -35.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 13:18:24,048 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.06ms. Allocated memory is still 136.3MB. Free memory was 113.0MB in the beginning and 111.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 13:18:24,052 INFO L158 Benchmark]: Boogie Preprocessor took 23.32ms. Allocated memory is still 136.3MB. Free memory was 111.4MB in the beginning and 110.5MB in the end (delta: 959.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:18:24,052 INFO L158 Benchmark]: RCFGBuilder took 157.43ms. Allocated memory is still 136.3MB. Free memory was 110.2MB in the beginning and 101.4MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 13:18:24,053 INFO L158 Benchmark]: TraceAbstraction took 237.44ms. Allocated memory is still 136.3MB. Free memory was 100.9MB in the beginning and 88.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-14 13:18:24,053 INFO L158 Benchmark]: Witness Printer took 4.83ms. Allocated memory is still 136.3MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:18:24,059 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 100.7MB. Free memory was 62.2MB in the beginning and 62.1MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.33ms. Allocated memory was 100.7MB in the beginning and 136.3MB in the end (delta: 35.7MB). Free memory was 77.5MB in the beginning and 113.0MB in the end (delta: -35.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.06ms. Allocated memory is still 136.3MB. Free memory was 113.0MB in the beginning and 111.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.32ms. Allocated memory is still 136.3MB. Free memory was 111.4MB in the beginning and 110.5MB in the end (delta: 959.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 157.43ms. Allocated memory is still 136.3MB. Free memory was 110.2MB in the beginning and 101.4MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 237.44ms. Allocated memory is still 136.3MB. Free memory was 100.9MB in the beginning and 88.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.83ms. Allocated memory is still 136.3MB. Free memory is still 88.3MB. 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: 4]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryLONGDOUBLEComparisonOperation at line 11, overapproximation of someBinaryArithmeticDOUBLEoperation at line 8. Possible FailurePath: [L8] long double x = 1.0/7.0; [L9] long long res = 0; [L11] int i = 1; VAL [i=1, res=0] [L11] COND FALSE !(x != 0) VAL [i=1, res=0] [L17] CALL __VERIFIER_assert(res > 67050) [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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=12occurred 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 [2021-12-14 13:18:24,106 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 -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/digits_bad_for.c -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 7a282122dc24d7edcdab0235b368fb11c8475c7879a31ec8b05ebbedfee80407 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 13:18:25,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 13:18:25,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 13:18:25,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 13:18:25,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 13:18:25,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 13:18:25,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 13:18:25,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 13:18:25,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 13:18:25,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 13:18:25,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 13:18:25,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 13:18:25,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 13:18:25,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 13:18:25,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 13:18:25,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 13:18:25,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 13:18:25,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 13:18:25,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 13:18:25,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 13:18:25,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 13:18:25,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 13:18:25,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 13:18:25,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 13:18:25,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 13:18:25,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 13:18:25,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 13:18:25,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 13:18:25,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 13:18:25,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 13:18:25,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 13:18:25,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 13:18:25,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 13:18:25,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 13:18:25,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 13:18:25,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 13:18:25,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 13:18:25,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 13:18:25,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 13:18:25,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 13:18:25,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 13:18:25,909 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-14 13:18:25,931 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 13:18:25,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 13:18:25,933 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 13:18:25,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 13:18:25,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 13:18:25,934 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 13:18:25,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 13:18:25,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 13:18:25,935 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 13:18:25,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 13:18:25,936 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 13:18:25,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 13:18:25,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 13:18:25,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 13:18:25,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 13:18:25,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 13:18:25,937 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 13:18:25,937 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 13:18:25,937 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 13:18:25,937 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 13:18:25,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 13:18:25,937 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 13:18:25,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 13:18:25,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 13:18:25,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 13:18:25,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 13:18:25,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:18:25,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 13:18:25,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 13:18:25,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 13:18:25,939 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 13:18:25,939 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 13:18:25,939 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 13:18:25,939 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 13:18:25,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 13:18:25,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 13:18:25,940 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 13:18:25,940 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a282122dc24d7edcdab0235b368fb11c8475c7879a31ec8b05ebbedfee80407 [2021-12-14 13:18:26,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 13:18:26,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 13:18:26,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 13:18:26,219 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 13:18:26,219 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 13:18:26,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/digits_bad_for.c [2021-12-14 13:18:26,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d9e7964c/35d2ac0791dc47bdb876a80e8125c0a1/FLAG63e076753 [2021-12-14 13:18:26,654 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 13:18:26,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_bad_for.c [2021-12-14 13:18:26,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d9e7964c/35d2ac0791dc47bdb876a80e8125c0a1/FLAG63e076753 [2021-12-14 13:18:26,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d9e7964c/35d2ac0791dc47bdb876a80e8125c0a1 [2021-12-14 13:18:26,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 13:18:26,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 13:18:26,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 13:18:26,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 13:18:26,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 13:18:26,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:18:26" (1/1) ... [2021-12-14 13:18:26,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f917780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:26, skipping insertion in model container [2021-12-14 13:18:26,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:18:26" (1/1) ... [2021-12-14 13:18:26,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 13:18:26,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 13:18:26,797 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/digits_bad_for.c[319,332] [2021-12-14 13:18:26,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:18:26,821 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 13:18:26,831 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/digits_bad_for.c[319,332] [2021-12-14 13:18:26,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:18:26,851 INFO L208 MainTranslator]: Completed translation [2021-12-14 13:18:26,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:26 WrapperNode [2021-12-14 13:18:26,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 13:18:26,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 13:18:26,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 13:18:26,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 13:18:26,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:26" (1/1) ... [2021-12-14 13:18:26,886 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:26" (1/1) ... [2021-12-14 13:18:26,897 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2021-12-14 13:18:26,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 13:18:26,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 13:18:26,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 13:18:26,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 13:18:26,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:26" (1/1) ... [2021-12-14 13:18:26,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:26" (1/1) ... [2021-12-14 13:18:26,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:26" (1/1) ... [2021-12-14 13:18:26,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:26" (1/1) ... [2021-12-14 13:18:26,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:26" (1/1) ... [2021-12-14 13:18:26,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:26" (1/1) ... [2021-12-14 13:18:26,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:26" (1/1) ... [2021-12-14 13:18:26,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 13:18:26,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 13:18:26,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 13:18:26,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 13:18:26,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:26" (1/1) ... [2021-12-14 13:18:26,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:18:26,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:18:26,993 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) [2021-12-14 13:18:27,032 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 [2021-12-14 13:18:27,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 13:18:27,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 13:18:27,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 13:18:27,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 13:18:27,097 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 13:18:27,098 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 13:18:29,304 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 13:18:29,307 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 13:18:29,307 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 13:18:29,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:18:29 BoogieIcfgContainer [2021-12-14 13:18:29,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 13:18:29,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 13:18:29,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 13:18:29,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 13:18:29,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:18:26" (1/3) ... [2021-12-14 13:18:29,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280946bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:18:29, skipping insertion in model container [2021-12-14 13:18:29,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:18:26" (2/3) ... [2021-12-14 13:18:29,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280946bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:18:29, skipping insertion in model container [2021-12-14 13:18:29,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:18:29" (3/3) ... [2021-12-14 13:18:29,324 INFO L111 eAbstractionObserver]: Analyzing ICFG digits_bad_for.c [2021-12-14 13:18:29,328 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 13:18:29,341 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 13:18:29,381 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 13:18:29,386 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 [2021-12-14 13:18:29,387 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 13:18:29,395 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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) [2021-12-14 13:18:29,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-14 13:18:29,398 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:18:29,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-14 13:18:29,399 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:18:29,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:18:29,402 INFO L85 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2021-12-14 13:18:29,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:18:29,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532414064] [2021-12-14 13:18:29,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:18:29,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:18:29,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:18:29,422 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) [2021-12-14 13:18:29,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-14 13:18:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:18:29,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 13:18:29,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:18:29,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:18:29,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:18:29,590 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:18:29,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532414064] [2021-12-14 13:18:29,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532414064] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:18:29,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:18:29,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 13:18:29,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997867394] [2021-12-14 13:18:29,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:18:29,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 13:18:29,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:18:29,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 13:18:29,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 13:18:29,614 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 3 states, 3 states have (on average 2.0) 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) [2021-12-14 13:18:31,806 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-14 13:18:31,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:18:31,886 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-12-14 13:18:31,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 13:18:31,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) 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 [2021-12-14 13:18:31,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:18:31,892 INFO L225 Difference]: With dead ends: 21 [2021-12-14 13:18:31,892 INFO L226 Difference]: Without dead ends: 9 [2021-12-14 13:18:31,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 13:18:31,896 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-14 13:18:31,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-12-14 13:18:31,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-14 13:18:31,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-14 13:18:31,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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) [2021-12-14 13:18:31,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-12-14 13:18:31,915 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-12-14 13:18:31,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:18:31,915 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-12-14 13:18:31,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) 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) [2021-12-14 13:18:31,916 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-12-14 13:18:31,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-14 13:18:31,916 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:18:31,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:18:31,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-14 13:18:32,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:18:32,125 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:18:32,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:18:32,125 INFO L85 PathProgramCache]: Analyzing trace with hash 265180975, now seen corresponding path program 1 times [2021-12-14 13:18:32,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:18:32,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696605439] [2021-12-14 13:18:32,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:18:32,126 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:18:32,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:18:32,133 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) [2021-12-14 13:18:32,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-14 13:18:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:18:32,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 13:18:32,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:18:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:18:33,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 13:18:40,155 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-12-14 13:18:42,203 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-12-14 13:18:42,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-14 13:18:42,376 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:18:42,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696605439] [2021-12-14 13:18:42,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696605439] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 13:18:42,376 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 13:18:42,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-12-14 13:18:42,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641100480] [2021-12-14 13:18:42,377 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 13:18:42,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 13:18:42,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:18:42,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 13:18:42,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=17, Unknown=2, NotChecked=8, Total=42 [2021-12-14 13:18:42,378 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2021-12-14 13:18:44,402 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 [] [2021-12-14 13:18:46,522 WARN L860 $PredicateComparison]: unable to prove that (and (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-12-14 13:18:48,694 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-14 13:18:48,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:18:48,795 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-12-14 13:18:48,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 13:18:48,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) Word has length 8 [2021-12-14 13:18:48,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:18:48,798 INFO L225 Difference]: With dead ends: 15 [2021-12-14 13:18:48,798 INFO L226 Difference]: Without dead ends: 11 [2021-12-14 13:18:48,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=17, Invalid=18, Unknown=3, NotChecked=18, Total=56 [2021-12-14 13:18:48,799 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-14 13:18:48,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 2 Unknown, 8 Unchecked, 4.3s Time] [2021-12-14 13:18:48,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-12-14 13:18:48,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-12-14 13:18:48,801 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) [2021-12-14 13:18:48,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-12-14 13:18:48,802 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2021-12-14 13:18:48,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:18:48,802 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-12-14 13:18:48,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2021-12-14 13:18:48,804 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-12-14 13:18:48,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-14 13:18:48,804 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:18:48,804 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-12-14 13:18:48,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-14 13:18:49,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:18:49,006 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:18:49,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:18:49,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1489078833, now seen corresponding path program 2 times [2021-12-14 13:18:49,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:18:49,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395761129] [2021-12-14 13:18:49,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 13:18:49,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:18:49,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:18:49,017 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 13:18:49,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-14 13:18:50,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 13:18:50,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 13:18:50,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 13:18:50,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:18:57,810 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~x~0#1| (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-12-14 13:19:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-14 13:19:02,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 13:19:08,422 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-12-14 13:19:10,490 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-12-14 13:19:21,046 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-12-14 13:19:23,180 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-12-14 13:19:29,448 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-12-14 13:19:31,531 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-12-14 13:19:31,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-12-14 13:19:31,532 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:19:31,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395761129] [2021-12-14 13:19:31,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395761129] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 13:19:31,532 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 13:19:31,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-12-14 13:19:31,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209206573] [2021-12-14 13:19:31,532 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 13:19:31,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 13:19:31,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:19:31,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 13:19:31,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=18, Unknown=7, NotChecked=44, Total=90 [2021-12-14 13:19:31,533 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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) [2021-12-14 13:19:33,640 WARN L860 $PredicateComparison]: unable to prove that (and (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-12-14 13:19:35,785 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0)))) (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-12-14 13:19:37,869 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (and (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 .cse0) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse1) (_ bv10 32))))) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-12-14 13:19:39,949 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~x~0#1| (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32))))))) (not (fp.eq |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-12-14 13:19:39,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:19:39,968 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-12-14 13:19:39,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 13:19:39,969 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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 [2021-12-14 13:19:39,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:19:39,969 INFO L225 Difference]: With dead ends: 17 [2021-12-14 13:19:39,970 INFO L226 Difference]: Without dead ends: 13 [2021-12-14 13:19:39,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.1s TimeCoverageRelationStatistics Valid=29, Invalid=22, Unknown=11, NotChecked=120, Total=182 [2021-12-14 13:19:39,971 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:19:39,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 33 Unchecked, 0.0s Time] [2021-12-14 13:19:39,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-12-14 13:19:39,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-14 13:19:39,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 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) [2021-12-14 13:19:39,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-12-14 13:19:39,974 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2021-12-14 13:19:39,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:19:39,974 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-12-14 13:19:39,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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) [2021-12-14 13:19:39,975 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-12-14 13:19:39,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-14 13:19:39,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:19:39,975 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1] [2021-12-14 13:19:40,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-14 13:19:40,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:19:40,176 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:19:40,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:19:40,176 INFO L85 PathProgramCache]: Analyzing trace with hash 833881267, now seen corresponding path program 3 times [2021-12-14 13:19:40,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:19:40,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324397440] [2021-12-14 13:19:40,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-14 13:19:40,177 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:19:40,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:19:40,182 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 13:19:40,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-14 13:19:41,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-14 13:19:41,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 13:19:41,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 13:19:41,795 INFO L286 TraceCheckSpWp]: Computing forward predicates...