./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/zonotope_loose.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/float-benchs/zonotope_loose.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ffcfb5240555d68939cfa296fd9345209c9c26c .................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/float-benchs/zonotope_loose.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ffcfb5240555d68939cfa296fd9345209c9c26c ............................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 07:39:28,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 07:39:28,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 07:39:28,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 07:39:28,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 07:39:28,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 07:39:28,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 07:39:28,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 07:39:28,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 07:39:28,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 07:39:28,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 07:39:28,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 07:39:28,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 07:39:28,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 07:39:28,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 07:39:28,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 07:39:28,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 07:39:28,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 07:39:28,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 07:39:28,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 07:39:28,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 07:39:28,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 07:39:28,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 07:39:28,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 07:39:28,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 07:39:28,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 07:39:28,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 07:39:28,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 07:39:28,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 07:39:28,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 07:39:28,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 07:39:28,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 07:39:28,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 07:39:28,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 07:39:28,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 07:39:28,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 07:39:28,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 07:39:28,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 07:39:28,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 07:39:28,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 07:39:28,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 07:39:28,466 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 07:39:28,495 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 07:39:28,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 07:39:28,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 07:39:28,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 07:39:28,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 07:39:28,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 07:39:28,498 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 07:39:28,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 07:39:28,498 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 07:39:28,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 07:39:28,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 07:39:28,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 07:39:28,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 07:39:28,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 07:39:28,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 07:39:28,500 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 07:39:28,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 07:39:28,500 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 07:39:28,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 07:39:28,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 07:39:28,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 07:39:28,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 07:39:28,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 07:39:28,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 07:39:28,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 07:39:28,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 07:39:28,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 07:39:28,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 07:39:28,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 07:39:28,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 07:39:28,502 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ffcfb5240555d68939cfa296fd9345209c9c26c [2021-08-29 07:39:28,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 07:39:28,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 07:39:28,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 07:39:28,779 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 07:39:28,779 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 07:39:28,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_loose.c [2021-08-29 07:39:28,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4e94fa50/06474f44616b40cea8bd3437000263fd/FLAG0ac7cba63 [2021-08-29 07:39:29,156 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 07:39:29,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_loose.c [2021-08-29 07:39:29,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4e94fa50/06474f44616b40cea8bd3437000263fd/FLAG0ac7cba63 [2021-08-29 07:39:29,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4e94fa50/06474f44616b40cea8bd3437000263fd [2021-08-29 07:39:29,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 07:39:29,590 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 07:39:29,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 07:39:29,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 07:39:29,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 07:39:29,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:39:29" (1/1) ... [2021-08-29 07:39:29,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ed1cb3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:29, skipping insertion in model container [2021-08-29 07:39:29,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:39:29" (1/1) ... [2021-08-29 07:39:29,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 07:39:29,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 07:39:29,695 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_loose.c[577,590] [2021-08-29 07:39:29,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 07:39:29,708 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 07:39:29,715 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_loose.c[577,590] [2021-08-29 07:39:29,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 07:39:29,725 INFO L208 MainTranslator]: Completed translation [2021-08-29 07:39:29,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:29 WrapperNode [2021-08-29 07:39:29,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 07:39:29,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 07:39:29,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 07:39:29,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 07:39:29,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:29" (1/1) ... [2021-08-29 07:39:29,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:29" (1/1) ... [2021-08-29 07:39:29,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 07:39:29,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 07:39:29,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 07:39:29,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 07:39:29,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:29" (1/1) ... [2021-08-29 07:39:29,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:29" (1/1) ... [2021-08-29 07:39:29,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:29" (1/1) ... [2021-08-29 07:39:29,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:29" (1/1) ... [2021-08-29 07:39:29,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:29" (1/1) ... [2021-08-29 07:39:29,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:29" (1/1) ... [2021-08-29 07:39:29,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:29" (1/1) ... [2021-08-29 07:39:29,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 07:39:29,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 07:39:29,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 07:39:29,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 07:39:29,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:29" (1/1) ... [2021-08-29 07:39:29,792 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 07:39:29,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 07:39:29,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 07:39:29,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 07:39:29,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 07:39:29,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 07:39:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 07:39:29,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 07:39:29,973 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 07:39:29,973 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-29 07:39:29,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:39:29 BoogieIcfgContainer [2021-08-29 07:39:29,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 07:39:29,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 07:39:29,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 07:39:29,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 07:39:29,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 07:39:29" (1/3) ... [2021-08-29 07:39:29,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d85cf52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:39:29, skipping insertion in model container [2021-08-29 07:39:29,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:29" (2/3) ... [2021-08-29 07:39:29,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d85cf52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:39:29, skipping insertion in model container [2021-08-29 07:39:29,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:39:29" (3/3) ... [2021-08-29 07:39:29,982 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_loose.c [2021-08-29 07:39:29,986 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 07:39:29,987 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 07:39:30,026 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 07:39:30,034 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 07:39:30,034 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 07:39:30,045 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 07:39:30,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 07:39:30,049 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 07:39:30,049 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 07:39:30,050 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 07:39:30,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 07:39:30,055 INFO L82 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2021-08-29 07:39:30,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 07:39:30,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315636153] [2021-08-29 07:39:30,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 07:39:30,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 07:39:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 07:39:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 07:39:30,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 07:39:30,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315636153] [2021-08-29 07:39:30,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315636153] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 07:39:30,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 07:39:30,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 07:39:30,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145256800] [2021-08-29 07:39:30,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 07:39:30,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 07:39:30,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 07:39:30,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 07:39:30,226 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 07:39:30,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 07:39:30,280 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-08-29 07:39:30,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 07:39:30,282 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) Word has length 8 [2021-08-29 07:39:30,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 07:39:30,287 INFO L225 Difference]: With dead ends: 23 [2021-08-29 07:39:30,291 INFO L226 Difference]: Without dead ends: 9 [2021-08-29 07:39:30,293 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 07:39:30,296 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.17ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.06ms IncrementalHoareTripleChecker+Time [2021-08-29 07:39:30,297 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 13 Unknown, 0 Unchecked, 0.17ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 44.06ms Time] [2021-08-29 07:39:30,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-08-29 07:39:30,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-08-29 07:39:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 07:39:30,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-08-29 07:39:30,325 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2021-08-29 07:39:30,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 07:39:30,326 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-08-29 07:39:30,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 07:39:30,326 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-08-29 07:39:30,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 07:39:30,326 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 07:39:30,327 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 07:39:30,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 07:39:30,327 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 07:39:30,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 07:39:30,328 INFO L82 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2021-08-29 07:39:30,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 07:39:30,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600120291] [2021-08-29 07:39:30,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 07:39:30,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 07:39:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 07:39:30,348 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 07:39:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 07:39:30,379 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 07:39:30,380 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 07:39:30,381 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 07:39:30,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 07:39:30,386 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 07:39:30,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 07:39:30 BoogieIcfgContainer [2021-08-29 07:39:30,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 07:39:30,404 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 07:39:30,404 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 07:39:30,404 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 07:39:30,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:39:29" (3/4) ... [2021-08-29 07:39:30,407 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-29 07:39:30,407 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 07:39:30,407 INFO L158 Benchmark]: Toolchain (without parser) took 817.81ms. Allocated memory was 50.3MB in the beginning and 67.1MB in the end (delta: 16.8MB). Free memory was 27.9MB in the beginning and 49.1MB in the end (delta: -21.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 07:39:30,408 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 50.3MB. Free memory is still 32.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 07:39:30,408 INFO L158 Benchmark]: CACSL2BoogieTranslator took 134.26ms. Allocated memory was 50.3MB in the beginning and 67.1MB in the end (delta: 16.8MB). Free memory was 27.7MB in the beginning and 48.6MB in the end (delta: -20.9MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-08-29 07:39:30,409 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.02ms. Allocated memory is still 67.1MB. Free memory was 48.4MB in the beginning and 50.8MB in the end (delta: -2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 07:39:30,409 INFO L158 Benchmark]: Boogie Preprocessor took 27.80ms. Allocated memory is still 67.1MB. Free memory was 50.8MB in the beginning and 49.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 07:39:30,409 INFO L158 Benchmark]: RCFGBuilder took 188.71ms. Allocated memory is still 67.1MB. Free memory was 49.8MB in the beginning and 41.6MB in the end (delta: 8.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-29 07:39:30,410 INFO L158 Benchmark]: TraceAbstraction took 427.05ms. Allocated memory is still 67.1MB. Free memory was 41.2MB in the beginning and 49.4MB in the end (delta: -8.2MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2021-08-29 07:39:30,410 INFO L158 Benchmark]: Witness Printer took 2.79ms. Allocated memory is still 67.1MB. Free memory was 49.4MB in the beginning and 49.1MB in the end (delta: 311.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 07:39:30,412 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 50.3MB. Free memory is still 32.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 134.26ms. Allocated memory was 50.3MB in the beginning and 67.1MB in the end (delta: 16.8MB). Free memory was 27.7MB in the beginning and 48.6MB in the end (delta: -20.9MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.02ms. Allocated memory is still 67.1MB. Free memory was 48.4MB in the beginning and 50.8MB in the end (delta: -2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.80ms. Allocated memory is still 67.1MB. Free memory was 50.8MB in the beginning and 49.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 188.71ms. Allocated memory is still 67.1MB. Free memory was 49.8MB in the beginning and 41.6MB in the end (delta: 8.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 427.05ms. Allocated memory is still 67.1MB. Free memory was 41.2MB in the beginning and 49.4MB in the end (delta: -8.2MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * Witness Printer took 2.79ms. Allocated memory is still 67.1MB. Free memory was 49.4MB in the beginning and 49.1MB in the end (delta: 311.3kB). 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, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 24. Possible FailurePath: [L18] double x,y; [L20] x = __VERIFIER_nondet_double() [L12] COND FALSE !(!cond) [L23] y = x*x - x [L24] COND TRUE y >= 0 [L24] y = x / 10. [L14] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 360.15ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 6.49ms, AutomataDifference: 99.52ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 8.46ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 44.06ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 40.36ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13 IncrementalHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 13 mSolverCounterSat, 0.17ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 8.83ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.27ms SsaConstructionTime, 34.03ms SatisfiabilityAnalysisTime, 63.29ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-29 07:39:30,444 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... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 07:39:31,921 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-08-29 07:39:31,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 07:39:31,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 07:39:31,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 07:39:31,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 07:39:31,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 07:39:31,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 07:39:31,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 07:39:31,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 07:39:31,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 07:39:31,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 07:39:31,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 07:39:31,982 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-29 07:39:32,010 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 07:39:32,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 07:39:32,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 07:39:32,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 07:39:32,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 07:39:32,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 07:39:32,013 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 07:39:32,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 07:39:32,013 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 07:39:32,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 07:39:32,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 07:39:32,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 07:39:32,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 07:39:32,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 07:39:32,015 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-29 07:39:32,015 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-29 07:39:32,015 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 07:39:32,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 07:39:32,015 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 07:39:32,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 07:39:32,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 07:39:32,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 07:39:32,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 07:39:32,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 07:39:32,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 07:39:32,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 07:39:32,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 07:39:32,024 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-29 07:39:32,024 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-29 07:39:32,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 07:39:32,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 07:39:32,025 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-29 07:39:32,025 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ffcfb5240555d68939cfa296fd9345209c9c26c [2021-08-29 07:39:32,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 07:39:32,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 07:39:32,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 07:39:32,283 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 07:39:32,283 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 07:39:32,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_loose.c [2021-08-29 07:39:32,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/524b40b6b/eb80f1fed4c1406eaed04481697206ac/FLAG4ea4527e6 [2021-08-29 07:39:32,670 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 07:39:32,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_loose.c [2021-08-29 07:39:32,674 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/524b40b6b/eb80f1fed4c1406eaed04481697206ac/FLAG4ea4527e6 [2021-08-29 07:39:33,111 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/524b40b6b/eb80f1fed4c1406eaed04481697206ac [2021-08-29 07:39:33,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 07:39:33,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 07:39:33,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 07:39:33,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 07:39:33,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 07:39:33,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:39:33" (1/1) ... [2021-08-29 07:39:33,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c86b8b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:33, skipping insertion in model container [2021-08-29 07:39:33,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:39:33" (1/1) ... [2021-08-29 07:39:33,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 07:39:33,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 07:39:33,232 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_loose.c[577,590] [2021-08-29 07:39:33,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 07:39:33,253 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 07:39:33,264 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_loose.c[577,590] [2021-08-29 07:39:33,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 07:39:33,302 INFO L208 MainTranslator]: Completed translation [2021-08-29 07:39:33,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:33 WrapperNode [2021-08-29 07:39:33,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 07:39:33,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 07:39:33,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 07:39:33,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 07:39:33,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:33" (1/1) ... [2021-08-29 07:39:33,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:33" (1/1) ... [2021-08-29 07:39:33,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 07:39:33,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 07:39:33,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 07:39:33,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 07:39:33,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:33" (1/1) ... [2021-08-29 07:39:33,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:33" (1/1) ... [2021-08-29 07:39:33,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:33" (1/1) ... [2021-08-29 07:39:33,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:33" (1/1) ... [2021-08-29 07:39:33,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:33" (1/1) ... [2021-08-29 07:39:33,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:33" (1/1) ... [2021-08-29 07:39:33,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:33" (1/1) ... [2021-08-29 07:39:33,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 07:39:33,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 07:39:33,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 07:39:33,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 07:39:33,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:33" (1/1) ... [2021-08-29 07:39:33,387 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 07:39:33,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 07:39:33,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 07:39:33,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 07:39:33,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-29 07:39:33,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 07:39:33,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 07:39:33,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 07:39:33,554 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 07:39:33,554 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-29 07:39:33,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:39:33 BoogieIcfgContainer [2021-08-29 07:39:33,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 07:39:33,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 07:39:33,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 07:39:33,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 07:39:33,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 07:39:33" (1/3) ... [2021-08-29 07:39:33,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717bb1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:39:33, skipping insertion in model container [2021-08-29 07:39:33,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:39:33" (2/3) ... [2021-08-29 07:39:33,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717bb1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:39:33, skipping insertion in model container [2021-08-29 07:39:33,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:39:33" (3/3) ... [2021-08-29 07:39:33,561 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_loose.c [2021-08-29 07:39:33,564 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 07:39:33,564 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 07:39:33,592 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 07:39:33,596 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 07:39:33,597 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 07:39:33,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 07:39:33,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 07:39:33,612 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 07:39:33,612 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 07:39:33,612 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 07:39:33,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 07:39:33,616 INFO L82 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2021-08-29 07:39:33,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 07:39:33,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314861356] [2021-08-29 07:39:33,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 07:39:33,624 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 07:39:33,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 07:39:33,629 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 07:39:33,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-29 07:39:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 07:39:34,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-29 07:39:34,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 07:39:34,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 07:39:34,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 07:39:34,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 07:39:34,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 07:39:34,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314861356] [2021-08-29 07:39:34,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314861356] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 07:39:34,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 07:39:34,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-29 07:39:34,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593349784] [2021-08-29 07:39:34,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 07:39:34,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 07:39:34,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 07:39:34,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 07:39:34,143 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 07:39:35,787 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 07:39:38,172 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 07:39:39,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 07:39:39,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 07:39:39,798 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-08-29 07:39:39,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 07:39:39,800 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) Word has length 8 [2021-08-29 07:39:39,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 07:39:39,804 INFO L225 Difference]: With dead ends: 23 [2021-08-29 07:39:39,804 INFO L226 Difference]: Without dead ends: 9 [2021-08-29 07:39:39,806 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.08ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 07:39:39,808 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5463.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.24ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5641.92ms IncrementalHoareTripleChecker+Time [2021-08-29 07:39:39,809 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 13 Unknown, 0 Unchecked, 0.24ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 5641.92ms Time] [2021-08-29 07:39:39,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-08-29 07:39:39,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-08-29 07:39:39,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 07:39:39,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-08-29 07:39:39,826 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2021-08-29 07:39:39,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 07:39:39,827 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-08-29 07:39:39,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 07:39:39,827 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-08-29 07:39:39,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 07:39:39,827 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 07:39:39,828 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 07:39:39,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-29 07:39:40,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 07:39:40,043 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 07:39:40,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 07:39:40,044 INFO L82 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2021-08-29 07:39:40,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 07:39:40,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219407173] [2021-08-29 07:39:40,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 07:39:40,045 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 07:39:40,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 07:39:40,046 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 07:39:40,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-29 07:39:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 07:39:40,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-29 07:39:40,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 07:40:08,928 WARN L210 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 15 [2021-08-29 07:41:24,611 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (let ((.cse0 (fp.leq (fp.div roundNearestTiesToEven ULTIMATE.start_main_~x~0 .cse1) ((_ to_fp 11 53) roundNearestTiesToEven 105.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)) (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 .cse1)))) is different from false [2021-08-29 07:41:26,699 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (let ((.cse0 (fp.leq (fp.div roundNearestTiesToEven ULTIMATE.start_main_~x~0 .cse1) ((_ to_fp 11 53) roundNearestTiesToEven 105.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)) (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 .cse1)))) is different from true [2021-08-29 07:41:42,870 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (not (fp.leq (fp.div roundNearestTiesToEven ULTIMATE.start_main_~x~0 .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 105.0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 .cse0)))) is different from false [2021-08-29 07:41:44,957 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (not (fp.leq (fp.div roundNearestTiesToEven ULTIMATE.start_main_~x~0 .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 105.0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 .cse0)))) is different from true [2021-08-29 07:41:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 07:41:44,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 07:41:57,026 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (fp.geq .cse0 (_ +zero 11 53)))) is different from false [2021-08-29 07:41:59,143 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (fp.geq .cse0 (_ +zero 11 53)))) is different from true [2021-08-29 07:42:20,416 WARN L860 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (fp.geq .cse0 (_ +zero 11 53))))) is different from true [2021-08-29 07:43:00,658 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (or (not (fp.leq v_ULTIMATE.start_main_~x~0_9 .cse0)) (fp.leq (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_9 .cse0) ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_9 (_ +zero 11 53)))))) is different from false [2021-08-29 07:43:02,778 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (or (not (fp.leq v_ULTIMATE.start_main_~x~0_9 .cse0)) (fp.leq (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_9 .cse0) ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_9 (_ +zero 11 53)))))) is different from true [2021-08-29 07:43:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 07:43:02,779 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 07:43:02,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219407173] [2021-08-29 07:43:02,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219407173] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 07:43:02,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 07:43:02,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-08-29 07:43:02,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434172038] [2021-08-29 07:43:02,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-29 07:43:02,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 07:43:02,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-29 07:43:02,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=37, Unknown=13, NotChecked=80, Total=156 [2021-08-29 07:43:02,781 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 07:43:04,901 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~x~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (or (not (fp.leq v_ULTIMATE.start_main_~x~0_9 .cse0)) (fp.leq (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_9 .cse0) ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_9 (_ +zero 11 53)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-08-29 07:43:07,018 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~x~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (or (not (fp.leq v_ULTIMATE.start_main_~x~0_9 .cse0)) (fp.leq (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_9 .cse0) ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_9 (_ +zero 11 53)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-08-29 07:43:09,141 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (and (let ((.cse0 (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53))) (.cse1 (fp.leq c_ULTIMATE.start_main_~x~0 .cse3))) (or (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse0 .cse1) (and (or (not .cse0) (not .cse1)) .cse2))) (or .cse2 (let ((.cse4 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse3))) (and (fp.leq .cse4 ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (fp.geq .cse4 (_ +zero 11 53))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-08-29 07:43:12,293 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse1))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (fp.geq .cse0 (_ +zero 11 53)) (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq c_ULTIMATE.start_main_~x~0 .cse1) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-08-29 07:43:30,288 WARN L210 SmtUtils]: Spent 14.07s on a formula simplification that was a NOOP. DAG size: 19 [2021-08-29 07:43:38,939 WARN L210 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 24 [2021-08-29 07:43:38,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 07:43:38,969 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-08-29 07:43:38,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 07:43:38,970 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-29 07:43:38,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 07:43:38,970 INFO L225 Difference]: With dead ends: 13 [2021-08-29 07:43:38,970 INFO L226 Difference]: Without dead ends: 9 [2021-08-29 07:43:38,971 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 77191.78ms TimeCoverageRelationStatistics Valid=40, Invalid=63, Unknown=19, NotChecked=184, Total=306 [2021-08-29 07:43:38,972 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 56.67ms IncrementalHoareTripleChecker+Time [2021-08-29 07:43:38,972 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 36 Unknown, 0 Unchecked, 0.45ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 23 Unchecked, 56.67ms Time] [2021-08-29 07:43:38,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-08-29 07:43:38,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-08-29 07:43:38,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 07:43:38,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-08-29 07:43:38,974 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-08-29 07:43:38,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 07:43:38,974 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-08-29 07:43:38,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 07:43:38,975 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-08-29 07:43:38,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 07:43:38,975 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 07:43:38,975 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 07:43:38,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-29 07:43:39,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 07:43:39,191 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 07:43:39,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 07:43:39,192 INFO L82 PathProgramCache]: Analyzing trace with hash 176701705, now seen corresponding path program 1 times [2021-08-29 07:43:39,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 07:43:39,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798930535] [2021-08-29 07:43:39,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 07:43:39,192 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 07:43:39,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 07:43:39,193 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 07:43:39,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-29 07:43:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 07:43:39,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-29 07:43:39,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 07:43:52,752 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~y~0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0) c_ULTIMATE.start_main_~x~0)) (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-08-29 07:44:09,846 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (not (fp.geq (fp.sub c_currentRoundingMode .cse0 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= c_ULTIMATE.start_main_~y~0 (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-08-29 07:45:58,429 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (let ((.cse0 (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not (fp.geq .cse0 (_ +zero 11 53)))) (and (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 105.0)) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))))) (not (fp.geq (fp.sub roundNearestTiesToEven .cse1 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))))) is different from false [2021-08-29 07:46:00,467 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (let ((.cse0 (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not (fp.geq .cse0 (_ +zero 11 53)))) (and (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 105.0)) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))))) (not (fp.geq (fp.sub roundNearestTiesToEven .cse1 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))))) is different from true [2021-08-29 07:46:21,211 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (not (fp.geq (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (_ +zero 11 53))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))))) is different from false [2021-08-29 07:46:23,254 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (not (fp.geq (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (_ +zero 11 53))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))))) is different from true [2021-08-29 07:46:23,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 07:46:23,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 07:46:34,698 WARN L860 $PredicateComparison]: unable to prove that (or (fp.leq (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (fp.geq c_ULTIMATE.start_main_~y~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-08-29 07:46:44,300 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (or (fp.geq (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 105.0)))) is different from false [2021-08-29 07:46:46,352 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (or (fp.geq (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 105.0)))) is different from true [2021-08-29 07:47:23,088 WARN L210 SmtUtils]: Spent 11.16s on a formula simplification that was a NOOP. DAG size: 16 [2021-08-29 07:47:41,780 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_10 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~x~0_10))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_10 (_ +zero 11 53))) (fp.geq (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~x~0_10) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.leq v_ULTIMATE.start_main_~x~0_10 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))))) is different from false [2021-08-29 07:47:43,837 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_10 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~x~0_10))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_10 (_ +zero 11 53))) (fp.geq (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~x~0_10) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.leq v_ULTIMATE.start_main_~x~0_10 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))))) is different from true [2021-08-29 07:47:43,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 07:47:43,837 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 07:47:43,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798930535] [2021-08-29 07:47:43,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798930535] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 07:47:43,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 07:47:43,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-08-29 07:47:43,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377148424] [2021-08-29 07:47:43,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-29 07:47:43,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 07:47:43,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-29 07:47:43,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=38, Unknown=17, NotChecked=126, Total=210 [2021-08-29 07:47:43,839 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand has 15 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 07:47:45,851 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-08-29 07:47:47,969 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~x~0_10 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~x~0_10))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_10 (_ +zero 11 53))) (fp.geq (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~x~0_10) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.leq v_ULTIMATE.start_main_~x~0_10 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-08-29 07:47:50,024 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~x~0_10 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~x~0_10))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_10 (_ +zero 11 53))) (fp.geq (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~x~0_10) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.leq v_ULTIMATE.start_main_~x~0_10 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-08-29 07:47:52,084 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (and (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (or (fp.geq (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 105.0)) .cse1)) (let ((.cse2 (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53))) (.cse3 (fp.leq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))) (or (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse2 .cse3) (and (or (not .cse2) (not .cse3)) .cse1))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-08-29 07:47:54,727 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (or (fp.geq (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 105.0)))) (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-08-29 07:47:56,791 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (and (= c_ULTIMATE.start_main_~y~0 (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0)) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (fp.geq c_ULTIMATE.start_main_~y~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-08-29 07:47:58,837 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (and (= c_ULTIMATE.start_main_~y~0 (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0)) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (fp.geq c_ULTIMATE.start_main_~y~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-08-29 07:48:00,897 WARN L838 $PredicateComparison]: unable to prove that (and (fp.leq c_ULTIMATE.start_main_~y~0 ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (fp.geq c_ULTIMATE.start_main_~y~0 (_ +zero 11 53)) (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (not (fp.geq (fp.sub c_currentRoundingMode .cse0 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= c_ULTIMATE.start_main_~y~0 (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-08-29 07:48:02,960 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (let ((.cse0 (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not (fp.geq .cse0 (_ +zero 11 53)))) (and (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 105.0)) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))))) (not (fp.geq (fp.sub roundNearestTiesToEven .cse1 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)))))) is different from false [2021-08-29 07:48:02,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 07:48:02,966 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-08-29 07:48:02,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 07:48:02,966 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-29 07:48:02,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 07:48:02,966 INFO L225 Difference]: With dead ends: 9 [2021-08-29 07:48:02,966 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 07:48:02,967 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 67017.68ms TimeCoverageRelationStatistics Valid=41, Invalid=42, Unknown=25, NotChecked=312, Total=420 [2021-08-29 07:48:02,967 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2029.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.21ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 2085.10ms IncrementalHoareTripleChecker+Time [2021-08-29 07:48:02,968 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 17 Unknown, 0 Unchecked, 0.21ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 11 Unchecked, 2085.10ms Time] [2021-08-29 07:48:02,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 07:48:02,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 07:48:02,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 07:48:02,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 07:48:02,969 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-08-29 07:48:02,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 07:48:02,969 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 07:48:02,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 07:48:02,969 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 07:48:02,969 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 07:48:02,971 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 07:48:02,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-29 07:48:03,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 07:48:03,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 07:48:03,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 07:48:03,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 07:48:03,200 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 07:48:03,200 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-08-29 07:48:03,200 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 07:48:03,200 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 07:48:03,200 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 07:48:03,201 INFO L861 garLoopResultBuilder]: At program point L28(lines 16 29) the Hoare annotation is: true [2021-08-29 07:48:03,201 INFO L858 garLoopResultBuilder]: For program point L24(lines 24 25) no Hoare annotation was computed. [2021-08-29 07:48:03,201 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-29 07:48:03,201 INFO L858 garLoopResultBuilder]: For program point L24-2(lines 24 25) no Hoare annotation was computed. [2021-08-29 07:48:03,201 INFO L858 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2021-08-29 07:48:03,201 INFO L858 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-08-29 07:48:03,201 INFO L858 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-08-29 07:48:03,202 INFO L861 garLoopResultBuilder]: At program point L14-3(line 14) the Hoare annotation is: true [2021-08-29 07:48:03,204 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 07:48:03,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 07:48:03 BoogieIcfgContainer [2021-08-29 07:48:03,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 07:48:03,209 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 07:48:03,209 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 07:48:03,210 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 07:48:03,210 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:39:33" (3/4) ... [2021-08-29 07:48:03,212 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 07:48:03,218 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-08-29 07:48:03,218 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 07:48:03,218 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-29 07:48:03,218 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 07:48:03,235 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 07:48:03,235 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 07:48:03,235 INFO L158 Benchmark]: Toolchain (without parser) took 510120.28ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.7MB in the beginning and 40.7MB in the end (delta: -9.0MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2021-08-29 07:48:03,236 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory is still 36.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 07:48:03,236 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.78ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.4MB in the beginning and 50.7MB in the end (delta: -19.3MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2021-08-29 07:48:03,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.68ms. Allocated memory is still 67.1MB. Free memory was 50.5MB in the beginning and 49.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 07:48:03,236 INFO L158 Benchmark]: Boogie Preprocessor took 38.95ms. Allocated memory is still 67.1MB. Free memory was 49.1MB in the beginning and 48.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 07:48:03,237 INFO L158 Benchmark]: RCFGBuilder took 174.97ms. Allocated memory is still 67.1MB. Free memory was 48.0MB in the beginning and 39.4MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 07:48:03,237 INFO L158 Benchmark]: TraceAbstraction took 509652.48ms. Allocated memory is still 67.1MB. Free memory was 39.0MB in the beginning and 43.2MB in the end (delta: -4.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 07:48:03,237 INFO L158 Benchmark]: Witness Printer took 25.72ms. Allocated memory is still 67.1MB. Free memory was 43.2MB in the beginning and 40.7MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 07:48:03,238 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory is still 36.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.78ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.4MB in the beginning and 50.7MB in the end (delta: -19.3MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.68ms. Allocated memory is still 67.1MB. Free memory was 50.5MB in the beginning and 49.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.95ms. Allocated memory is still 67.1MB. Free memory was 49.1MB in the beginning and 48.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 174.97ms. Allocated memory is still 67.1MB. Free memory was 48.0MB in the beginning and 39.4MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 509652.48ms. Allocated memory is still 67.1MB. Free memory was 39.0MB in the beginning and 43.2MB in the end (delta: -4.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 25.72ms. Allocated memory is still 67.1MB. Free memory was 43.2MB in the beginning and 40.7MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 509613.79ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 9.99ms, AutomataDifference: 61012.76ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 27.14ms, InitialAbstractionConstructionTime: 5.38ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 7783.68ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 7546.35ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 34 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 30 mSolverCounterSat, 0.90ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 21 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 144209.54ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 10.19ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 20.38ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 2.68ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 21.49ms SsaConstructionTime, 953.00ms SatisfiabilityAnalysisTime, 446827.40ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 8 QuantifiedInterpolants, 570 SizeOfPredicates, 14 NumberOfNonLiveVariables, 99 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-29 07:48:03,432 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...