./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-esbmc-regression/Double_div.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/Double_div.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2f4e199f6665b6821475945a72290dab8d4d620db3a5150842d6f2ec9f4c430d --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:51:47,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:51:47,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:51:47,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:51:47,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:51:47,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:51:47,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:51:47,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:51:47,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:51:47,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:51:47,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:51:47,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:51:47,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:51:47,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:51:47,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:51:47,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:51:47,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:51:47,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:51:47,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:51:47,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:51:47,706 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:51:47,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:51:47,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:51:47,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:51:47,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:51:47,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:51:47,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:51:47,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:51:47,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:51:47,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:51:47,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:51:47,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:51:47,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:51:47,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:51:47,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:51:47,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:51:47,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:51:47,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:51:47,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:51:47,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:51:47,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:51:47,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:51:47,728 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 13:51:47,761 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:51:47,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:51:47,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:51:47,762 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:51:47,763 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:51:47,763 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:51:47,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:51:47,764 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:51:47,764 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:51:47,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:51:47,765 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:51:47,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 13:51:47,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:51:47,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:51:47,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:51:47,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:51:47,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:51:47,766 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:51:47,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:51:47,766 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:51:47,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:51:47,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:51:47,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:51:47,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:51:47,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:51:47,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:51:47,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:51:47,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:51:47,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 13:51:47,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 13:51:47,768 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:51:47,769 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:51:47,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:51:47,769 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f4e199f6665b6821475945a72290dab8d4d620db3a5150842d6f2ec9f4c430d [2022-07-19 13:51:47,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:51:48,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:51:48,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:51:48,013 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:51:48,014 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:51:48,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Double_div.i [2022-07-19 13:51:48,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/646e89be9/c23f965fdf5748209555a8ca473ba908/FLAG9745db03a [2022-07-19 13:51:48,377 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:51:48,378 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div.i [2022-07-19 13:51:48,385 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/646e89be9/c23f965fdf5748209555a8ca473ba908/FLAG9745db03a [2022-07-19 13:51:48,820 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/646e89be9/c23f965fdf5748209555a8ca473ba908 [2022-07-19 13:51:48,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:51:48,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:51:48,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:51:48,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:51:48,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:51:48,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:51:48" (1/1) ... [2022-07-19 13:51:48,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e405cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:48, skipping insertion in model container [2022-07-19 13:51:48,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:51:48" (1/1) ... [2022-07-19 13:51:48,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:51:48,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:51:48,980 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div.i[804,817] [2022-07-19 13:51:48,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:51:49,002 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:51:49,013 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div.i[804,817] [2022-07-19 13:51:49,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:51:49,028 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:51:49,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:49 WrapperNode [2022-07-19 13:51:49,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:51:49,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:51:49,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:51:49,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:51:49,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:49" (1/1) ... [2022-07-19 13:51:49,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:49" (1/1) ... [2022-07-19 13:51:49,067 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 26 [2022-07-19 13:51:49,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:51:49,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:51:49,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:51:49,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:51:49,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:49" (1/1) ... [2022-07-19 13:51:49,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:49" (1/1) ... [2022-07-19 13:51:49,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:49" (1/1) ... [2022-07-19 13:51:49,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:49" (1/1) ... [2022-07-19 13:51:49,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:49" (1/1) ... [2022-07-19 13:51:49,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:49" (1/1) ... [2022-07-19 13:51:49,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:49" (1/1) ... [2022-07-19 13:51:49,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:51:49,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:51:49,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:51:49,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:51:49,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:49" (1/1) ... [2022-07-19 13:51:49,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:51:49,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:51:49,108 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 13:51:49,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 13:51:49,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:51:49,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 13:51:49,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:51:49,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:51:49,200 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:51:49,201 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:51:49,259 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:51:49,264 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:51:49,264 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 13:51:49,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:51:49 BoogieIcfgContainer [2022-07-19 13:51:49,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:51:49,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:51:49,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:51:49,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:51:49,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:51:48" (1/3) ... [2022-07-19 13:51:49,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28020793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:51:49, skipping insertion in model container [2022-07-19 13:51:49,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:49" (2/3) ... [2022-07-19 13:51:49,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28020793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:51:49, skipping insertion in model container [2022-07-19 13:51:49,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:51:49" (3/3) ... [2022-07-19 13:51:49,276 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div.i [2022-07-19 13:51:49,288 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:51:49,288 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:51:49,326 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:51:49,333 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7c62d63d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3a52c590 [2022-07-19 13:51:49,333 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:51:49,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:51:49,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-19 13:51:49,342 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:51:49,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-19 13:51:49,343 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:51:49,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:51:49,348 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2022-07-19 13:51:49,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:51:49,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025585388] [2022-07-19 13:51:49,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:51:49,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:51:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:51:49,433 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 13:51:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:51:49,474 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 13:51:49,475 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 13:51:49,477 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 13:51:49,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 13:51:49,483 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 13:51:49,486 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 13:51:49,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 01:51:49 BoogieIcfgContainer [2022-07-19 13:51:49,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 13:51:49,509 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 13:51:49,510 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 13:51:49,510 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 13:51:49,511 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:51:49" (3/4) ... [2022-07-19 13:51:49,515 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 13:51:49,515 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 13:51:49,517 INFO L158 Benchmark]: Toolchain (without parser) took 691.82ms. Allocated memory is still 104.9MB. Free memory was 64.6MB in the beginning and 55.0MB in the end (delta: 9.7MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2022-07-19 13:51:49,518 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:51:49,519 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.97ms. Allocated memory is still 104.9MB. Free memory was 64.5MB in the beginning and 79.7MB in the end (delta: -15.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 13:51:49,520 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.05ms. Allocated memory is still 104.9MB. Free memory was 79.7MB in the beginning and 78.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:51:49,521 INFO L158 Benchmark]: Boogie Preprocessor took 13.68ms. Allocated memory is still 104.9MB. Free memory was 78.3MB in the beginning and 77.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:51:49,525 INFO L158 Benchmark]: RCFGBuilder took 184.17ms. Allocated memory is still 104.9MB. Free memory was 77.3MB in the beginning and 68.7MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:51:49,526 INFO L158 Benchmark]: TraceAbstraction took 238.23ms. Allocated memory is still 104.9MB. Free memory was 68.2MB in the beginning and 55.3MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 13:51:49,527 INFO L158 Benchmark]: Witness Printer took 5.84ms. Allocated memory is still 104.9MB. Free memory was 55.3MB in the beginning and 55.0MB in the end (delta: 320.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:51:49,535 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 204.97ms. Allocated memory is still 104.9MB. Free memory was 64.5MB in the beginning and 79.7MB in the end (delta: -15.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.05ms. Allocated memory is still 104.9MB. Free memory was 79.7MB in the beginning and 78.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.68ms. Allocated memory is still 104.9MB. Free memory was 78.3MB in the beginning and 77.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 184.17ms. Allocated memory is still 104.9MB. Free memory was 77.3MB in the beginning and 68.7MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 238.23ms. Allocated memory is still 104.9MB. Free memory was 68.2MB in the beginning and 55.3MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 5.84ms. Allocated memory is still 104.9MB. Free memory was 55.3MB in the beginning and 55.0MB in the end (delta: 320.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 29, overapproximation of someBinaryArithmeticDOUBLEoperation at line 21. Possible FailurePath: [L20] double x = 1.0; [L21] double x1 = x/2.5; VAL [x=1] [L23] COND FALSE !(x1 != x) VAL [x=1] [L29] CALL __VERIFIER_assert(x == 0) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-19 13:51:49,568 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/Double_div.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2f4e199f6665b6821475945a72290dab8d4d620db3a5150842d6f2ec9f4c430d --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:51:51,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:51:51,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:51:51,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:51:51,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:51:51,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:51:51,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:51:51,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:51:51,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:51:51,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:51:51,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:51:51,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:51:51,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:51:51,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:51:51,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:51:51,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:51:51,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:51:51,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:51:51,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:51:51,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:51:51,486 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:51:51,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:51:51,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:51:51,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:51:51,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:51:51,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:51:51,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:51:51,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:51:51,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:51:51,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:51:51,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:51:51,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:51:51,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:51:51,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:51:51,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:51:51,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:51:51,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:51:51,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:51:51,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:51:51,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:51:51,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:51:51,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:51:51,515 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 13:51:51,546 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:51:51,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:51:51,547 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:51:51,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:51:51,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:51:51,548 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:51:51,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:51:51,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:51:51,549 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:51:51,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:51:51,549 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:51:51,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:51:51,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:51:51,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:51:51,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:51:51,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:51:51,558 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 13:51:51,558 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 13:51:51,558 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 13:51:51,558 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:51:51,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:51:51,559 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:51:51,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:51:51,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:51:51,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:51:51,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:51:51,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:51:51,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:51:51,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:51:51,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:51:51,561 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 13:51:51,562 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 13:51:51,562 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:51:51,562 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:51:51,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:51:51,563 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 13:51:51,563 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f4e199f6665b6821475945a72290dab8d4d620db3a5150842d6f2ec9f4c430d [2022-07-19 13:51:51,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:51:51,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:51:51,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:51:51,913 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:51:51,914 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:51:51,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Double_div.i [2022-07-19 13:51:51,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/762b247f0/34949e4fb6f44987ab48d9c7a3eaf57f/FLAGea9a18bf8 [2022-07-19 13:51:52,413 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:51:52,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div.i [2022-07-19 13:51:52,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/762b247f0/34949e4fb6f44987ab48d9c7a3eaf57f/FLAGea9a18bf8 [2022-07-19 13:51:52,833 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/762b247f0/34949e4fb6f44987ab48d9c7a3eaf57f [2022-07-19 13:51:52,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:51:52,836 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:51:52,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:51:52,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:51:52,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:51:52,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:51:52" (1/1) ... [2022-07-19 13:51:52,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f1f5c2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:52, skipping insertion in model container [2022-07-19 13:51:52,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:51:52" (1/1) ... [2022-07-19 13:51:52,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:51:52,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:51:52,978 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div.i[804,817] [2022-07-19 13:51:52,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:51:52,998 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:51:53,008 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div.i[804,817] [2022-07-19 13:51:53,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:51:53,045 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:51:53,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:53 WrapperNode [2022-07-19 13:51:53,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:51:53,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:51:53,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:51:53,047 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:51:53,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:53" (1/1) ... [2022-07-19 13:51:53,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:53" (1/1) ... [2022-07-19 13:51:53,082 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2022-07-19 13:51:53,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:51:53,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:51:53,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:51:53,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:51:53,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:53" (1/1) ... [2022-07-19 13:51:53,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:53" (1/1) ... [2022-07-19 13:51:53,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:53" (1/1) ... [2022-07-19 13:51:53,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:53" (1/1) ... [2022-07-19 13:51:53,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:53" (1/1) ... [2022-07-19 13:51:53,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:53" (1/1) ... [2022-07-19 13:51:53,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:53" (1/1) ... [2022-07-19 13:51:53,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:51:53,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:51:53,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:51:53,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:51:53,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:53" (1/1) ... [2022-07-19 13:51:53,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:51:53,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:51:53,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 13:51:53,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 13:51:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:51:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 13:51:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:51:53,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:51:53,247 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:51:53,249 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:51:56,283 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:51:56,289 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:51:56,289 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 13:51:56,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:51:56 BoogieIcfgContainer [2022-07-19 13:51:56,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:51:56,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:51:56,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:51:56,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:51:56,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:51:52" (1/3) ... [2022-07-19 13:51:56,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4be35c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:51:56, skipping insertion in model container [2022-07-19 13:51:56,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:53" (2/3) ... [2022-07-19 13:51:56,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4be35c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:51:56, skipping insertion in model container [2022-07-19 13:51:56,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:51:56" (3/3) ... [2022-07-19 13:51:56,312 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div.i [2022-07-19 13:51:56,335 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:51:56,340 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:51:56,393 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:51:56,406 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@586df11d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6fed23ac [2022-07-19 13:51:56,406 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:51:56,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:51:56,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-19 13:51:56,415 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:51:56,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-19 13:51:56,417 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:51:56,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:51:56,426 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2022-07-19 13:51:56,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:51:56,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024053845] [2022-07-19 13:51:56,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:51:56,438 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:51:56,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:51:56,444 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:51:56,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 13:51:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:51:56,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 13:51:56,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:52:03,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:52:03,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:52:03,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:52:03,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024053845] [2022-07-19 13:52:03,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024053845] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:52:03,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:52:03,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:52:03,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982439011] [2022-07-19 13:52:03,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:52:03,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 13:52:03,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:52:03,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 13:52:03,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 13:52:03,554 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:52:06,532 WARN L855 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) |c_ULTIMATE.start_main_~x~0#1|) (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div roundNearestTiesToEven |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-19 13:52:07,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:52:07,479 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2022-07-19 13:52:07,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 13:52:07,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-19 13:52:07,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:52:07,491 INFO L225 Difference]: With dead ends: 20 [2022-07-19 13:52:07,491 INFO L226 Difference]: Without dead ends: 8 [2022-07-19 13:52:07,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-07-19 13:52:07,497 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 13:52:07,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 1 Unchecked, 1.7s Time] [2022-07-19 13:52:07,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-07-19 13:52:07,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-07-19 13:52:07,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:52:07,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-07-19 13:52:07,521 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2022-07-19 13:52:07,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:52:07,522 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-07-19 13:52:07,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:52:07,522 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-07-19 13:52:07,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 13:52:07,523 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:52:07,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:52:07,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-19 13:52:07,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:52:07,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:52:07,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:52:07,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2022-07-19 13:52:07,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:52:07,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358077729] [2022-07-19 13:52:07,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:52:07,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:52:07,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:52:07,737 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:52:07,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-19 13:52:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:52:08,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 13:52:08,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:52:14,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:52:14,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 13:52:21,499 WARN L833 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) is different from false [2022-07-19 13:52:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-07-19 13:52:24,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:52:24,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358077729] [2022-07-19 13:52:24,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358077729] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 13:52:24,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 13:52:24,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-07-19 13:52:24,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347787421] [2022-07-19 13:52:24,133 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 13:52:24,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 13:52:24,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:52:24,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 13:52:24,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2022-07-19 13:52:24,136 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:52:27,325 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0)) (not (fp.eq |c_ULTIMATE.start_main_~x1~0#1| |c_ULTIMATE.start_main_~x~0#1|)) (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse0) |c_ULTIMATE.start_main_~x1~0#1|)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-07-19 13:52:30,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 13:52:32,973 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 13:52:33,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:52:33,106 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-07-19 13:52:33,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 13:52:33,107 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-19 13:52:33,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:52:33,108 INFO L225 Difference]: With dead ends: 14 [2022-07-19 13:52:33,108 INFO L226 Difference]: Without dead ends: 10 [2022-07-19 13:52:33,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=15, Invalid=21, Unknown=2, NotChecked=18, Total=56 [2022-07-19 13:52:33,110 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-07-19 13:52:33,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 15 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 2 Unknown, 6 Unchecked, 6.7s Time] [2022-07-19 13:52:33,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-07-19 13:52:33,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-19 13:52:33,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:52:33,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-07-19 13:52:33,113 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2022-07-19 13:52:33,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:52:33,113 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-07-19 13:52:33,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:52:33,114 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-07-19 13:52:33,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-19 13:52:33,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:52:33,114 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-07-19 13:52:33,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-19 13:52:33,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:52:33,324 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:52:33,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:52:33,324 INFO L85 PathProgramCache]: Analyzing trace with hash 492108272, now seen corresponding path program 2 times [2022-07-19 13:52:33,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:52:33,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740703450] [2022-07-19 13:52:33,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 13:52:33,325 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:52:33,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:52:33,327 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) [2022-07-19 13:52:33,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-19 13:52:33,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 13:52:33,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 13:52:33,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-19 13:52:33,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:52:40,938 WARN L855 $PredicateComparison]: unable to prove that (and (= (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) |c_ULTIMATE.start_main_~x1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-19 13:52:48,396 WARN L855 $PredicateComparison]: unable to prove that (and (= (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) |c_ULTIMATE.start_main_~x1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-19 13:52:56,800 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-19 13:52:59,479 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) |c_ULTIMATE.start_main_~x~0#1|) (= (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0) |c_ULTIMATE.start_main_~x1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-07-19 13:52:59,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-07-19 13:52:59,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 13:53:08,752 WARN L833 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from false [2022-07-19 13:53:10,868 WARN L855 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-07-19 13:53:22,762 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2022-07-19 13:53:25,018 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2022-07-19 13:53:30,467 WARN L233 SmtUtils]: Spent 5.44s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-19 13:53:35,639 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-19 13:53:38,011 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2022-07-19 13:53:40,394 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2022-07-19 13:53:45,833 WARN L233 SmtUtils]: Spent 5.44s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-19 13:53:51,016 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-19 13:53:53,376 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2022-07-19 13:53:55,740 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2022-07-19 13:53:55,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-07-19 13:53:55,741 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:53:55,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740703450] [2022-07-19 13:53:55,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740703450] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 13:53:55,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 13:53:55,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2022-07-19 13:53:55,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108495441] [2022-07-19 13:53:55,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 13:53:55,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 13:53:55,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:53:55,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 13:53:55,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=32, Unknown=11, NotChecked=112, Total=182 [2022-07-19 13:53:55,744 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 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) [2022-07-19 13:53:58,178 WARN L855 $PredicateComparison]: unable to prove that (and (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-19 13:54:00,568 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-07-19 13:54:02,829 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) |c_ULTIMATE.start_main_~x1~0#1|) (let ((.cse1 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse0))) (or (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-07-19 13:54:05,233 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) |c_ULTIMATE.start_main_~x1~0#1|) (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse0) |c_ULTIMATE.start_main_~x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-07-19 13:54:33,782 WARN L233 SmtUtils]: Spent 22.92s on a formula simplification. DAG size of input: 22 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 13:54:35,186 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 13:54:40,985 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 13:54:41,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:54:41,750 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-07-19 13:54:41,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 13:54:41,751 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 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 9 [2022-07-19 13:54:41,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:54:41,751 INFO L225 Difference]: With dead ends: 18 [2022-07-19 13:54:41,751 INFO L226 Difference]: Without dead ends: 12 [2022-07-19 13:54:41,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 67.7s TimeCoverageRelationStatistics Valid=58, Invalid=78, Unknown=18, NotChecked=308, Total=462 [2022-07-19 13:54:41,753 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-19 13:54:41,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 1 Unknown, 52 Unchecked, 4.5s Time] [2022-07-19 13:54:41,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-07-19 13:54:41,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-19 13:54:41,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:54:41,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-07-19 13:54:41,757 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2022-07-19 13:54:41,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:54:41,757 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-07-19 13:54:41,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 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) [2022-07-19 13:54:41,758 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-07-19 13:54:41,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-19 13:54:41,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:54:41,758 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2022-07-19 13:54:41,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-19 13:54:41,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:54:41,959 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:54:41,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:54:41,960 INFO L85 PathProgramCache]: Analyzing trace with hash 522938704, now seen corresponding path program 3 times [2022-07-19 13:54:41,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:54:41,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825264077] [2022-07-19 13:54:41,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 13:54:41,961 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:54:41,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:54:41,962 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) [2022-07-19 13:54:41,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-19 13:54:42,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-19 13:54:42,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 13:54:42,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 13:54:42,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:54:47,909 WARN L855 $PredicateComparison]: unable to prove that (and (= (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-19 13:55:06,973 WARN L833 $PredicateComparison]: unable to prove that (and (= (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|) (exists ((|v_ULTIMATE.start_main_~x~0#1_13| (_ FloatingPoint 11 53))) (and (not (fp.eq |c_ULTIMATE.start_main_~x~0#1| |v_ULTIMATE.start_main_~x~0#1_13|)) (= |c_ULTIMATE.start_main_~x~0#1| (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_13| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-19 13:55:09,109 WARN L855 $PredicateComparison]: unable to prove that (and (= (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|) (exists ((|v_ULTIMATE.start_main_~x~0#1_13| (_ FloatingPoint 11 53))) (and (not (fp.eq |c_ULTIMATE.start_main_~x~0#1| |v_ULTIMATE.start_main_~x~0#1_13|)) (= |c_ULTIMATE.start_main_~x~0#1| (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_13| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-19 13:55:29,746 WARN L833 $PredicateComparison]: unable to prove that (and (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x~0#1|) (exists ((|v_ULTIMATE.start_main_~x~0#1_13| (_ FloatingPoint 11 53))) (and (not (fp.eq |c_ULTIMATE.start_main_~x~0#1| |v_ULTIMATE.start_main_~x~0#1_13|)) (= |c_ULTIMATE.start_main_~x~0#1| (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_13| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-19 13:55:31,914 WARN L855 $PredicateComparison]: unable to prove that (and (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x~0#1|) (exists ((|v_ULTIMATE.start_main_~x~0#1_13| (_ FloatingPoint 11 53))) (and (not (fp.eq |c_ULTIMATE.start_main_~x~0#1| |v_ULTIMATE.start_main_~x~0#1_13|)) (= |c_ULTIMATE.start_main_~x~0#1| (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_13| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-19 13:55:39,236 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-19 13:56:09,910 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-19 13:56:14,940 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-19 13:56:31,897 WARN L833 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_13| (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse1 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_13| .cse2))) (and (let ((.cse0 (fp.eq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse0) (and (not .cse0) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))))) (not (fp.eq .cse1 |v_ULTIMATE.start_main_~x~0#1_13|)) (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse2) .cse1))))) is different from false [2022-07-19 13:56:34,074 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_13| (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse1 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_13| .cse2))) (and (let ((.cse0 (fp.eq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse0) (and (not .cse0) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))))) (not (fp.eq .cse1 |v_ULTIMATE.start_main_~x~0#1_13|)) (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse2) .cse1))))) is different from true