./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-esbmc-regression/Float_div.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/Float_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 fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:26:49,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:26:49,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:26:49,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:26:49,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:26:49,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:26:49,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:26:49,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:26:49,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:26:49,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:26:49,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:26:49,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:26:49,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:26:49,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:26:49,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:26:49,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:26:49,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:26:49,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:26:49,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:26:49,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:26:49,549 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:26:49,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:26:49,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:26:49,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:26:49,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:26:49,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:26:49,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:26:49,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:26:49,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:26:49,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:26:49,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:26:49,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:26:49,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:26:49,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:26:49,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:26:49,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:26:49,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:26:49,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:26:49,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:26:49,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:26:49,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:26:49,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:26:49,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 14:26:49,598 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:26:49,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:26:49,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:26:49,599 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:26:49,600 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:26:49,600 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:26:49,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:26:49,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:26:49,601 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:26:49,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:26:49,602 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:26:49,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 14:26:49,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:26:49,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:26:49,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:26:49,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:26:49,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:26:49,603 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:26:49,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:26:49,604 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:26:49,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:26:49,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:26:49,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:26:49,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:26:49,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:26:49,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:26:49,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:26:49,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:26:49,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 14:26:49,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 14:26:49,607 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:26:49,607 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:26:49,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:26:49,608 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 [2022-07-13 14:26:49,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:26:49,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:26:49,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:26:49,857 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:26:49,858 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:26:49,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2022-07-13 14:26:49,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a2afe5ca/e5c9364677cf4634938e852c46d63c15/FLAG0dfcc6754 [2022-07-13 14:26:50,307 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:26:50,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2022-07-13 14:26:50,315 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a2afe5ca/e5c9364677cf4634938e852c46d63c15/FLAG0dfcc6754 [2022-07-13 14:26:50,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a2afe5ca/e5c9364677cf4634938e852c46d63c15 [2022-07-13 14:26:50,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:26:50,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:26:50,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:26:50,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:26:50,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:26:50,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:26:50" (1/1) ... [2022-07-13 14:26:50,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a51b05e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:50, skipping insertion in model container [2022-07-13 14:26:50,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:26:50" (1/1) ... [2022-07-13 14:26:50,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:26:50,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:26:50,854 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/Float_div.i[803,816] [2022-07-13 14:26:50,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:26:50,886 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:26:50,896 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/Float_div.i[803,816] [2022-07-13 14:26:50,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:26:50,909 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:26:50,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:50 WrapperNode [2022-07-13 14:26:50,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:26:50,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:26:50,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:26:50,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:26:50,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:50" (1/1) ... [2022-07-13 14:26:50,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:50" (1/1) ... [2022-07-13 14:26:50,938 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 26 [2022-07-13 14:26:50,938 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:26:50,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:26:50,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:26:50,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:26:50,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:50" (1/1) ... [2022-07-13 14:26:50,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:50" (1/1) ... [2022-07-13 14:26:50,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:50" (1/1) ... [2022-07-13 14:26:50,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:50" (1/1) ... [2022-07-13 14:26:50,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:50" (1/1) ... [2022-07-13 14:26:50,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:50" (1/1) ... [2022-07-13 14:26:50,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:50" (1/1) ... [2022-07-13 14:26:50,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:26:50,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:26:50,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:26:50,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:26:50,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:50" (1/1) ... [2022-07-13 14:26:50,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:26:50,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:26:50,985 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) [2022-07-13 14:26:51,011 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 [2022-07-13 14:26:51,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:26:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 14:26:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:26:51,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:26:51,080 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:26:51,082 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:26:51,166 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:26:51,172 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:26:51,172 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 14:26:51,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:26:51 BoogieIcfgContainer [2022-07-13 14:26:51,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:26:51,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:26:51,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:26:51,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:26:51,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:26:50" (1/3) ... [2022-07-13 14:26:51,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d454716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:26:51, skipping insertion in model container [2022-07-13 14:26:51,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:50" (2/3) ... [2022-07-13 14:26:51,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d454716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:26:51, skipping insertion in model container [2022-07-13 14:26:51,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:26:51" (3/3) ... [2022-07-13 14:26:51,197 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div.i [2022-07-13 14:26:51,226 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:26:51,226 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 14:26:51,309 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:26:51,319 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@bcb902f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6bdf530f [2022-07-13 14:26:51,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 14:26:51,326 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) [2022-07-13 14:26:51,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-13 14:26:51,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:26:51,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-13 14:26:51,332 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:26:51,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:26:51,337 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2022-07-13 14:26:51,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:26:51,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560881232] [2022-07-13 14:26:51,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:26:51,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:26:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:26:51,454 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 14:26:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:26:51,492 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 14:26:51,495 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 14:26:51,497 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 14:26:51,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 14:26:51,503 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-13 14:26:51,506 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 14:26:51,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 02:26:51 BoogieIcfgContainer [2022-07-13 14:26:51,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 14:26:51,528 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 14:26:51,529 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 14:26:51,529 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 14:26:51,529 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:26:51" (3/4) ... [2022-07-13 14:26:51,532 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 14:26:51,533 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 14:26:51,535 INFO L158 Benchmark]: Toolchain (without parser) took 813.10ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 63.5MB in the beginning and 68.8MB in the end (delta: -5.3MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2022-07-13 14:26:51,536 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 94.4MB. Free memory was 51.9MB in the beginning and 51.8MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:26:51,537 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.85ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 63.3MB in the beginning and 93.3MB in the end (delta: -30.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 14:26:51,538 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.12ms. Allocated memory is still 117.4MB. Free memory was 93.3MB in the beginning and 91.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 14:26:51,542 INFO L158 Benchmark]: Boogie Preprocessor took 16.55ms. Allocated memory is still 117.4MB. Free memory was 91.8MB in the beginning and 90.8MB in the end (delta: 957.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:26:51,543 INFO L158 Benchmark]: RCFGBuilder took 218.76ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 82.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 14:26:51,544 INFO L158 Benchmark]: TraceAbstraction took 349.21ms. Allocated memory is still 117.4MB. Free memory was 81.8MB in the beginning and 69.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-13 14:26:51,544 INFO L158 Benchmark]: Witness Printer took 4.41ms. Allocated memory is still 117.4MB. Free memory was 69.2MB in the beginning and 68.8MB in the end (delta: 479.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:26:51,551 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 94.4MB. Free memory was 51.9MB in the beginning and 51.8MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.85ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 63.3MB in the beginning and 93.3MB in the end (delta: -30.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.12ms. Allocated memory is still 117.4MB. Free memory was 93.3MB in the beginning and 91.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.55ms. Allocated memory is still 117.4MB. Free memory was 91.8MB in the beginning and 90.8MB in the end (delta: 957.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 218.76ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 82.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 349.21ms. Allocated memory is still 117.4MB. Free memory was 81.8MB in the beginning and 69.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.41ms. Allocated memory is still 117.4MB. Free memory was 69.2MB in the beginning and 68.8MB in the end (delta: 479.3kB). 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 someBinaryFLOATComparisonOperation at line 29, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L20] float x = 1.0f; [L21] float x1 = x/2.5f; VAL [x=1] [L23] COND FALSE !(x1 != x) VAL [x=1] [L29] CALL __VERIFIER_assert(x == 0) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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 [2022-07-13 14:26:51,598 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/Float_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 fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:26:53,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:26:53,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:26:53,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:26:53,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:26:53,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:26:53,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:26:53,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:26:53,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:26:53,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:26:53,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:26:53,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:26:53,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:26:53,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:26:53,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:26:53,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:26:53,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:26:53,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:26:53,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:26:53,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:26:53,638 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:26:53,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:26:53,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:26:53,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:26:53,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:26:53,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:26:53,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:26:53,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:26:53,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:26:53,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:26:53,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:26:53,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:26:53,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:26:53,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:26:53,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:26:53,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:26:53,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:26:53,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:26:53,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:26:53,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:26:53,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:26:53,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:26:53,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 14:26:53,703 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:26:53,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:26:53,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:26:53,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:26:53,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:26:53,705 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:26:53,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:26:53,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:26:53,706 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:26:53,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:26:53,707 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:26:53,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:26:53,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:26:53,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:26:53,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:26:53,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:26:53,709 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 14:26:53,709 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 14:26:53,709 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 14:26:53,709 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:26:53,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:26:53,710 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:26:53,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:26:53,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:26:53,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:26:53,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:26:53,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:26:53,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:26:53,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:26:53,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:26:53,712 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 14:26:53,712 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 14:26:53,712 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:26:53,712 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:26:53,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:26:53,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 14:26:53,713 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 [2022-07-13 14:26:54,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:26:54,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:26:54,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:26:54,073 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:26:54,073 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:26:54,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2022-07-13 14:26:54,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0400a6d56/6eaf4059805b4fa18ccbac31c471541a/FLAG25b29c5b3 [2022-07-13 14:26:54,584 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:26:54,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2022-07-13 14:26:54,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0400a6d56/6eaf4059805b4fa18ccbac31c471541a/FLAG25b29c5b3 [2022-07-13 14:26:54,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0400a6d56/6eaf4059805b4fa18ccbac31c471541a [2022-07-13 14:26:54,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:26:54,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:26:54,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:26:54,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:26:55,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:26:55,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:26:54" (1/1) ... [2022-07-13 14:26:55,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c3be1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:55, skipping insertion in model container [2022-07-13 14:26:55,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:26:54" (1/1) ... [2022-07-13 14:26:55,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:26:55,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:26:55,153 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/Float_div.i[803,816] [2022-07-13 14:26:55,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:26:55,172 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:26:55,215 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/Float_div.i[803,816] [2022-07-13 14:26:55,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:26:55,238 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:26:55,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:55 WrapperNode [2022-07-13 14:26:55,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:26:55,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:26:55,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:26:55,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:26:55,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:55" (1/1) ... [2022-07-13 14:26:55,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:55" (1/1) ... [2022-07-13 14:26:55,267 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2022-07-13 14:26:55,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:26:55,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:26:55,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:26:55,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:26:55,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:55" (1/1) ... [2022-07-13 14:26:55,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:55" (1/1) ... [2022-07-13 14:26:55,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:55" (1/1) ... [2022-07-13 14:26:55,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:55" (1/1) ... [2022-07-13 14:26:55,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:55" (1/1) ... [2022-07-13 14:26:55,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:55" (1/1) ... [2022-07-13 14:26:55,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:55" (1/1) ... [2022-07-13 14:26:55,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:26:55,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:26:55,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:26:55,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:26:55,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:55" (1/1) ... [2022-07-13 14:26:55,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:26:55,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:26:55,321 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) [2022-07-13 14:26:55,334 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 [2022-07-13 14:26:55,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:26:55,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 14:26:55,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:26:55,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:26:55,420 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:26:55,421 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:26:56,416 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:26:56,421 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:26:56,421 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 14:26:56,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:26:56 BoogieIcfgContainer [2022-07-13 14:26:56,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:26:56,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:26:56,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:26:56,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:26:56,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:26:54" (1/3) ... [2022-07-13 14:26:56,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de16ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:26:56, skipping insertion in model container [2022-07-13 14:26:56,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:26:55" (2/3) ... [2022-07-13 14:26:56,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de16ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:26:56, skipping insertion in model container [2022-07-13 14:26:56,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:26:56" (3/3) ... [2022-07-13 14:26:56,430 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div.i [2022-07-13 14:26:56,443 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:26:56,443 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 14:26:56,508 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:26:56,515 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@354d53ee, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@65de42a9 [2022-07-13 14:26:56,522 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 14:26:56,526 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) [2022-07-13 14:26:56,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-13 14:26:56,542 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:26:56,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-13 14:26:56,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:26:56,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:26:56,561 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2022-07-13 14:26:56,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:26:56,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193163347] [2022-07-13 14:26:56,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:26:56,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:26:56,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:26:56,579 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) [2022-07-13 14:26:56,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 14:26:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:26:56,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 14:26:56,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:26:57,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:26:57,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:26:57,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:26:57,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193163347] [2022-07-13 14:26:57,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193163347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:26:57,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:26:57,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 14:26:57,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455502652] [2022-07-13 14:26:57,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:26:57,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 14:26:57,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:26:57,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 14:26:57,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 14:26:57,849 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) [2022-07-13 14:26:58,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:26:58,855 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2022-07-13 14:26:58,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 14:26:58,937 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 [2022-07-13 14:26:58,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:26:58,943 INFO L225 Difference]: With dead ends: 20 [2022-07-13 14:26:58,943 INFO L226 Difference]: Without dead ends: 8 [2022-07-13 14:26:58,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 14:26:58,951 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 14:26:58,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 15 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 14:26:58,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-07-13 14:26:58,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-07-13 14:26:58,975 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) [2022-07-13 14:26:58,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-07-13 14:26:58,977 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2022-07-13 14:26:58,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:26:58,978 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-07-13 14:26:58,978 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) [2022-07-13 14:26:58,978 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-07-13 14:26:58,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-13 14:26:58,979 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:26:58,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:26:58,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-13 14:26:59,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:26:59,182 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:26:59,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:26:59,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2022-07-13 14:26:59,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:26:59,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577459184] [2022-07-13 14:26:59,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:26:59,183 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:26:59,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:26:59,185 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) [2022-07-13 14:26:59,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-13 14:26:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:26:59,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 14:26:59,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:27:02,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:27:02,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 14:27:05,244 WARN L855 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) is different from true [2022-07-13 14:27:05,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-07-13 14:27:05,368 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:27:05,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577459184] [2022-07-13 14:27:05,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577459184] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 14:27:05,369 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 14:27:05,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-07-13 14:27:05,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050743373] [2022-07-13 14:27:05,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 14:27:05,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 14:27:05,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:27:05,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 14:27:05,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2022-07-13 14:27:05,378 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) [2022-07-13 14:27:09,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:27:09,301 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-07-13 14:27:09,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 14:27:09,302 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 [2022-07-13 14:27:09,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:27:09,303 INFO L225 Difference]: With dead ends: 14 [2022-07-13 14:27:09,303 INFO L226 Difference]: Without dead ends: 10 [2022-07-13 14:27:09,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=29, Invalid=46, Unknown=1, NotChecked=14, Total=90 [2022-07-13 14:27:09,305 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 14:27:09,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 9 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 14 Invalid, 0 Unknown, 7 Unchecked, 0.8s Time] [2022-07-13 14:27:09,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-07-13 14:27:09,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-13 14:27:09,308 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) [2022-07-13 14:27:09,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-07-13 14:27:09,309 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2022-07-13 14:27:09,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:27:09,310 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-07-13 14:27:09,310 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) [2022-07-13 14:27:09,310 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-07-13 14:27:09,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 14:27:09,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:27:09,310 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-07-13 14:27:09,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-13 14:27:09,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:27:09,511 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:27:09,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:27:09,513 INFO L85 PathProgramCache]: Analyzing trace with hash 492108272, now seen corresponding path program 2 times [2022-07-13 14:27:09,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:27:09,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077202745] [2022-07-13 14:27:09,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 14:27:09,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:27:09,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:27:09,516 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) [2022-07-13 14:27:09,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-13 14:27:09,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 14:27:09,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 14:27:09,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 14:27:09,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:27:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:27:30,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 14:27:37,912 WARN L855 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-07-13 14:27:49,471 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2022-07-13 14:28:00,000 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2022-07-13 14:28:02,068 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2022-07-13 14:28:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-07-13 14:28:05,268 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:28:05,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077202745] [2022-07-13 14:28:05,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077202745] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 14:28:05,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 14:28:05,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2022-07-13 14:28:05,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120744643] [2022-07-13 14:28:05,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 14:28:05,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 14:28:05,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:28:05,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 14:28:05,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=68, Unknown=5, NotChecked=54, Total=156 [2022-07-13 14:28:05,271 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 13 states, 13 states have (on average 1.3076923076923077) 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) [2022-07-13 14:28:08,472 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:28:10,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:28:32,377 WARN L233 SmtUtils]: Spent 15.04s on a formula simplification. DAG size of input: 25 DAG size of output: 14 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 14:28:34,779 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (or (not (fp.eq |c_ULTIMATE.start_main_~x1~0#1| |c_ULTIMATE.start_main_~x~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x~0#1| .cse0)) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) |c_ULTIMATE.start_main_~x1~0#1|) (let ((.cse2 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse2 .cse1) .cse2)) (fp.eq .cse2 .cse0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-07-13 14:28:42,153 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:28:42,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:28:42,413 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-07-13 14:28:42,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 14:28:42,414 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3076923076923077) 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 [2022-07-13 14:28:42,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:28:42,414 INFO L225 Difference]: With dead ends: 18 [2022-07-13 14:28:42,414 INFO L226 Difference]: Without dead ends: 12 [2022-07-13 14:28:42,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 53.4s TimeCoverageRelationStatistics Valid=56, Invalid=133, Unknown=9, NotChecked=108, Total=306 [2022-07-13 14:28:42,416 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-07-13 14:28:42,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 17 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 49 Invalid, 0 Unknown, 31 Unchecked, 7.4s Time] [2022-07-13 14:28:42,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-07-13 14:28:42,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-13 14:28:42,418 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) [2022-07-13 14:28:42,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-07-13 14:28:42,419 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2022-07-13 14:28:42,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:28:42,419 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-07-13 14:28:42,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3076923076923077) 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) [2022-07-13 14:28:42,420 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-07-13 14:28:42,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 14:28:42,420 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:28:42,420 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2022-07-13 14:28:42,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-13 14:28:42,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:28:42,621 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:28:42,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:28:42,622 INFO L85 PathProgramCache]: Analyzing trace with hash 522938704, now seen corresponding path program 3 times [2022-07-13 14:28:42,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:28:42,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300377142] [2022-07-13 14:28:42,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 14:28:42,622 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:28:42,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:28:42,624 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) [2022-07-13 14:28:42,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-13 14:28:42,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-13 14:28:42,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 14:28:42,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 14:28:42,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:28:54,752 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~x~0#1_13| (_ FloatingPoint 8 24))) (and (= (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_13| ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x~0#1|) (not (fp.eq |c_ULTIMATE.start_main_~x~0#1| |v_ULTIMATE.start_main_~x~0#1_13|)))) (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-13 14:29:10,281 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~x~0#1_13| (_ FloatingPoint 8 24))) (and (= (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_13| ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x~0#1|) (not (fp.eq |c_ULTIMATE.start_main_~x~0#1| |v_ULTIMATE.start_main_~x~0#1_13|)))) (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-13 14:29:58,917 WARN L833 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_13| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_13| .cse1))) (and (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_13|)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (let ((.cse2 (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))))) (or (and (not .cse2) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) (and .cse2 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))))))))) is different from false [2022-07-13 14:30:00,953 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_13| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_13| .cse1))) (and (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_13|)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (let ((.cse2 (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))))) (or (and (not .cse2) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) (and .cse2 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))))))))) is different from true [2022-07-13 14:30:17,509 WARN L833 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_13| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_13| .cse1))) (and (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_13|)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2022-07-13 14:30:19,546 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_13| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_13| .cse1))) (and (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_13|)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2022-07-13 14:30:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 5 not checked. [2022-07-13 14:30:19,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 14:30:33,066 WARN L855 $PredicateComparison]: unable to prove that (or (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| ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-07-13 14:30:45,067 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1_15| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_15| .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_15|))))) is different from false [2022-07-13 14:30:47,111 WARN L855 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1_15| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_15| .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_15|))))) is different from true [2022-07-13 14:31:33,200 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 9 not checked. [2022-07-13 14:31:33,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:31:33,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300377142] [2022-07-13 14:31:33,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300377142] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 14:31:33,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 14:31:33,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2022-07-13 14:31:33,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479676821] [2022-07-13 14:31:33,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 14:31:33,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 14:31:33,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:31:33,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 14:31:33,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=10, NotChecked=90, Total=156 [2022-07-13 14:31:33,203 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:31:35,847 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~x~0#1_15| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_15| .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_15|))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false