./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_2+newton_1_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_2+newton_1_8.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f15ee43151b815daf0172d1dd7cbf85838195f09623b71f36e6eaf1920c66307 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:53:47,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:53:47,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:53:47,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:53:47,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:53:47,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:53:47,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:53:47,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:53:47,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:53:47,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:53:47,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:53:47,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:53:47,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:53:47,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:53:47,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:53:47,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:53:47,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:53:47,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:53:47,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:53:47,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:53:47,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:53:47,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:53:47,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:53:47,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:53:47,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:53:47,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:53:47,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:53:47,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:53:47,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:53:47,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:53:47,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:53:47,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:53:47,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:53:47,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:53:47,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:53:47,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:53:47,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:53:47,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:53:47,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:53:47,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:53:47,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:53:47,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:53:47,767 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:53:47,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:53:47,768 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:53:47,768 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:53:47,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:53:47,768 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:53:47,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:53:47,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:53:47,769 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:53:47,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:53:47,770 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:53:47,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:53:47,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:53:47,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:53:47,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:53:47,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:53:47,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:53:47,771 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:53:47,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:53:47,771 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:53:47,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:53:47,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:53:47,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:53:47,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:53:47,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:53:47,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:53:47,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:53:47,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:53:47,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:53:47,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:53:47,773 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:53:47,773 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:53:47,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:53:47,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:53:47,774 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f15ee43151b815daf0172d1dd7cbf85838195f09623b71f36e6eaf1920c66307 [2021-12-14 15:53:47,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:53:47,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:53:47,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:53:47,935 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:53:47,935 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:53:47,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_1_8.i [2021-12-14 15:53:47,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f42e4bc89/3aa22f3da5ac4906badb6a3f6a66794b/FLAG935244c4d [2021-12-14 15:53:48,328 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:53:48,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i [2021-12-14 15:53:48,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f42e4bc89/3aa22f3da5ac4906badb6a3f6a66794b/FLAG935244c4d [2021-12-14 15:53:48,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f42e4bc89/3aa22f3da5ac4906badb6a3f6a66794b [2021-12-14 15:53:48,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:53:48,354 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:53:48,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:53:48,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:53:48,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:53:48,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:53:48" (1/1) ... [2021-12-14 15:53:48,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c66536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:48, skipping insertion in model container [2021-12-14 15:53:48,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:53:48" (1/1) ... [2021-12-14 15:53:48,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:53:48,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:53:48,493 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[1226,1239] [2021-12-14 15:53:48,509 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[2820,2833] [2021-12-14 15:53:48,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:53:48,515 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:53:48,528 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[1226,1239] [2021-12-14 15:53:48,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[2820,2833] [2021-12-14 15:53:48,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:53:48,554 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:53:48,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:48 WrapperNode [2021-12-14 15:53:48,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:53:48,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:53:48,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:53:48,556 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:53:48,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:48" (1/1) ... [2021-12-14 15:53:48,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:48" (1/1) ... [2021-12-14 15:53:48,579 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-12-14 15:53:48,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:53:48,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:53:48,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:53:48,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:53:48,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:48" (1/1) ... [2021-12-14 15:53:48,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:48" (1/1) ... [2021-12-14 15:53:48,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:48" (1/1) ... [2021-12-14 15:53:48,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:48" (1/1) ... [2021-12-14 15:53:48,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:48" (1/1) ... [2021-12-14 15:53:48,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:48" (1/1) ... [2021-12-14 15:53:48,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:48" (1/1) ... [2021-12-14 15:53:48,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:53:48,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:53:48,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:53:48,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:53:48,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:48" (1/1) ... [2021-12-14 15:53:48,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:53:48,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:53:48,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 15:53:48,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 15:53:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:53:48,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:53:48,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:53:48,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:53:48,715 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:53:48,716 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:53:48,864 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:53:48,868 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:53:48,868 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 15:53:48,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:53:48 BoogieIcfgContainer [2021-12-14 15:53:48,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:53:48,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:53:48,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:53:48,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:53:48,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:53:48" (1/3) ... [2021-12-14 15:53:48,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aca3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:53:48, skipping insertion in model container [2021-12-14 15:53:48,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:48" (2/3) ... [2021-12-14 15:53:48,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aca3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:53:48, skipping insertion in model container [2021-12-14 15:53:48,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:53:48" (3/3) ... [2021-12-14 15:53:48,875 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_8.i [2021-12-14 15:53:48,878 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:53:48,878 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:53:48,940 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:53:48,948 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 15:53:48,948 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:53:48,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:53:48,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-14 15:53:48,970 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:53:48,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:53:48,971 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:53:48,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:53:48,978 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-14 15:53:48,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:53:48,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269239111] [2021-12-14 15:53:48,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:53:48,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:53:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:53:49,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:53:49,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:53:49,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269239111] [2021-12-14 15:53:49,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269239111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:53:49,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:53:49,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 15:53:49,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367074162] [2021-12-14 15:53:49,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:53:49,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 15:53:49,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:53:49,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 15:53:49,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 15:53:49,121 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:53:49,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:53:49,134 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-12-14 15:53:49,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 15:53:49,136 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) Word has length 9 [2021-12-14 15:53:49,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:53:49,142 INFO L225 Difference]: With dead ends: 47 [2021-12-14 15:53:49,142 INFO L226 Difference]: Without dead ends: 19 [2021-12-14 15:53:49,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 15:53:49,147 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:53:49,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:53:49,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-14 15:53:49,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-14 15:53:49,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:53:49,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-14 15:53:49,173 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-14 15:53:49,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:53:49,174 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-14 15:53:49,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:53:49,174 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-14 15:53:49,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-14 15:53:49,175 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:53:49,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:53:49,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:53:49,176 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:53:49,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:53:49,178 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-14 15:53:49,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:53:49,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931890538] [2021-12-14 15:53:49,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:53:49,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:53:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 15:53:49,206 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 15:53:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 15:53:49,245 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 15:53:49,246 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 15:53:49,247 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-14 15:53:49,248 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-14 15:53:49,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:53:49,253 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-14 15:53:49,255 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 15:53:49,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:53:49 BoogieIcfgContainer [2021-12-14 15:53:49,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 15:53:49,276 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 15:53:49,276 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 15:53:49,276 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 15:53:49,277 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:53:48" (3/4) ... [2021-12-14 15:53:49,278 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 15:53:49,279 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 15:53:49,280 INFO L158 Benchmark]: Toolchain (without parser) took 925.10ms. Allocated memory was 104.9MB in the beginning and 130.0MB in the end (delta: 25.2MB). Free memory was 76.8MB in the beginning and 104.6MB in the end (delta: -27.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 15:53:49,281 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory was 60.5MB in the beginning and 60.5MB in the end (delta: 41.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 15:53:49,282 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.36ms. Allocated memory is still 104.9MB. Free memory was 76.5MB in the beginning and 80.4MB in the end (delta: -3.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 15:53:49,283 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.79ms. Allocated memory is still 104.9MB. Free memory was 80.4MB in the beginning and 78.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 15:53:49,283 INFO L158 Benchmark]: Boogie Preprocessor took 40.94ms. Allocated memory is still 104.9MB. Free memory was 78.4MB in the beginning and 77.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 15:53:49,284 INFO L158 Benchmark]: RCFGBuilder took 246.55ms. Allocated memory is still 104.9MB. Free memory was 77.3MB in the beginning and 66.1MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-14 15:53:49,284 INFO L158 Benchmark]: TraceAbstraction took 403.89ms. Allocated memory was 104.9MB in the beginning and 130.0MB in the end (delta: 25.2MB). Free memory was 65.8MB in the beginning and 105.1MB in the end (delta: -39.3MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. [2021-12-14 15:53:49,285 INFO L158 Benchmark]: Witness Printer took 3.08ms. Allocated memory is still 130.0MB. Free memory was 105.1MB in the beginning and 104.6MB in the end (delta: 558.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 15:53:49,290 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory was 60.5MB in the beginning and 60.5MB in the end (delta: 41.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 199.36ms. Allocated memory is still 104.9MB. Free memory was 76.5MB in the beginning and 80.4MB in the end (delta: -3.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.79ms. Allocated memory is still 104.9MB. Free memory was 80.4MB in the beginning and 78.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.94ms. Allocated memory is still 104.9MB. Free memory was 78.4MB in the beginning and 77.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 246.55ms. Allocated memory is still 104.9MB. Free memory was 77.3MB in the beginning and 66.1MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 403.89ms. Allocated memory was 104.9MB in the beginning and 130.0MB in the end (delta: 25.2MB). Free memory was 65.8MB in the beginning and 105.1MB in the end (delta: -39.3MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. * Witness Printer took 3.08ms. Allocated memory is still 130.0MB. Free memory was 105.1MB in the beginning and 104.6MB in the end (delta: 558.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 102]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 93. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=49] [L102] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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 [2021-12-14 15:53:49,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_2+newton_1_8.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f15ee43151b815daf0172d1dd7cbf85838195f09623b71f36e6eaf1920c66307 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:53:50,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:53:50,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:53:50,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:53:50,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:53:50,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:53:50,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:53:50,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:53:50,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:53:50,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:53:50,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:53:50,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:53:50,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:53:50,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:53:50,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:53:50,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:53:50,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:53:50,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:53:50,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:53:50,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:53:50,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:53:50,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:53:50,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:53:50,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:53:50,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:53:50,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:53:50,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:53:50,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:53:50,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:53:50,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:53:50,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:53:50,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:53:50,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:53:50,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:53:50,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:53:50,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:53:50,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:53:50,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:53:50,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:53:50,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:53:50,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:53:50,943 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-14 15:53:50,971 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:53:50,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:53:50,972 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:53:50,973 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:53:50,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:53:50,973 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:53:50,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:53:50,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:53:50,974 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:53:50,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:53:50,975 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:53:50,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:53:50,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:53:50,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:53:50,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:53:50,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:53:50,976 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 15:53:50,976 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 15:53:50,976 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 15:53:50,976 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:53:50,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:53:50,977 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:53:50,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:53:50,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:53:50,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:53:50,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:53:50,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:53:50,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:53:50,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:53:50,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:53:50,983 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 15:53:50,983 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 15:53:50,983 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:53:50,983 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:53:50,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:53:50,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:53:50,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 15:53:50,984 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f15ee43151b815daf0172d1dd7cbf85838195f09623b71f36e6eaf1920c66307 [2021-12-14 15:53:51,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:53:51,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:53:51,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:53:51,243 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:53:51,243 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:53:51,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_1_8.i [2021-12-14 15:53:51,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/442ce0be4/d3e37469e5874886b3ad5106620eb09f/FLAGc14d91e34 [2021-12-14 15:53:51,654 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:53:51,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i [2021-12-14 15:53:51,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/442ce0be4/d3e37469e5874886b3ad5106620eb09f/FLAGc14d91e34 [2021-12-14 15:53:52,075 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/442ce0be4/d3e37469e5874886b3ad5106620eb09f [2021-12-14 15:53:52,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:53:52,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:53:52,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:53:52,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:53:52,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:53:52,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:53:52" (1/1) ... [2021-12-14 15:53:52,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6132b1c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:52, skipping insertion in model container [2021-12-14 15:53:52,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:53:52" (1/1) ... [2021-12-14 15:53:52,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:53:52,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:53:52,178 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[1226,1239] [2021-12-14 15:53:52,206 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[2820,2833] [2021-12-14 15:53:52,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:53:52,228 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:53:52,236 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[1226,1239] [2021-12-14 15:53:52,249 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_8.i[2820,2833] [2021-12-14 15:53:52,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:53:52,263 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:53:52,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:52 WrapperNode [2021-12-14 15:53:52,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:53:52,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:53:52,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:53:52,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:53:52,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:52" (1/1) ... [2021-12-14 15:53:52,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:52" (1/1) ... [2021-12-14 15:53:52,288 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-12-14 15:53:52,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:53:52,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:53:52,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:53:52,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:53:52,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:52" (1/1) ... [2021-12-14 15:53:52,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:52" (1/1) ... [2021-12-14 15:53:52,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:52" (1/1) ... [2021-12-14 15:53:52,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:52" (1/1) ... [2021-12-14 15:53:52,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:52" (1/1) ... [2021-12-14 15:53:52,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:52" (1/1) ... [2021-12-14 15:53:52,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:52" (1/1) ... [2021-12-14 15:53:52,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:53:52,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:53:52,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:53:52,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:53:52,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:52" (1/1) ... [2021-12-14 15:53:52,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:53:52,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:53:52,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 15:53:52,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 15:53:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:53:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 15:53:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:53:52,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:53:52,421 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:53:52,423 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:53:58,363 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:53:58,368 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:53:58,368 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 15:53:58,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:53:58 BoogieIcfgContainer [2021-12-14 15:53:58,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:53:58,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:53:58,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:53:58,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:53:58,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:53:52" (1/3) ... [2021-12-14 15:53:58,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d875f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:53:58, skipping insertion in model container [2021-12-14 15:53:58,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:53:52" (2/3) ... [2021-12-14 15:53:58,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d875f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:53:58, skipping insertion in model container [2021-12-14 15:53:58,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:53:58" (3/3) ... [2021-12-14 15:53:58,378 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_8.i [2021-12-14 15:53:58,381 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:53:58,382 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:53:58,425 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:53:58,429 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 15:53:58,430 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:53:58,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:53:58,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-14 15:53:58,442 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:53:58,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:53:58,443 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:53:58,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:53:58,448 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-14 15:53:58,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 15:53:58,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876809179] [2021-12-14 15:53:58,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:53:58,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 15:53:58,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 15:53:58,460 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 15:53:58,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-14 15:53:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:53:59,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 15:53:59,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 15:53:59,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:53:59,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 15:53:59,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 15:53:59,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876809179] [2021-12-14 15:53:59,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876809179] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:53:59,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:53:59,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 15:53:59,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258465814] [2021-12-14 15:53:59,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:53:59,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 15:53:59,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 15:53:59,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 15:53:59,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 15:53:59,468 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:53:59,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:53:59,480 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-12-14 15:53:59,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 15:53:59,482 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) Word has length 9 [2021-12-14 15:53:59,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:53:59,487 INFO L225 Difference]: With dead ends: 47 [2021-12-14 15:53:59,487 INFO L226 Difference]: Without dead ends: 19 [2021-12-14 15:53:59,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 15:53:59,493 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:53:59,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:53:59,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-14 15:53:59,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-14 15:53:59,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:53:59,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-14 15:53:59,516 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-14 15:53:59,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:53:59,516 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-14 15:53:59,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:53:59,517 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-14 15:53:59,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-14 15:53:59,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:53:59,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:53:59,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-14 15:53:59,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 15:53:59,718 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:53:59,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:53:59,719 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-14 15:53:59,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 15:53:59,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208111186] [2021-12-14 15:53:59,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:53:59,719 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 15:53:59,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 15:53:59,721 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 15:53:59,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-14 15:54:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 15:54:03,977 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 15:54:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 15:54:10,841 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-14 15:54:10,841 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 15:54:10,842 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-14 15:54:10,850 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-14 15:54:10,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-14 15:54:11,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 15:54:11,054 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-14 15:54:11,056 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 15:54:11,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:54:11 BoogieIcfgContainer [2021-12-14 15:54:11,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 15:54:11,073 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 15:54:11,073 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 15:54:11,073 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 15:54:11,073 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:53:58" (3/4) ... [2021-12-14 15:54:11,075 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-14 15:54:11,096 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 15:54:11,097 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 15:54:11,097 INFO L158 Benchmark]: Toolchain (without parser) took 19018.91ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 38.0MB in the beginning and 46.1MB in the end (delta: -8.1MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2021-12-14 15:54:11,098 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory was 40.8MB in the beginning and 40.8MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 15:54:11,098 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.68ms. Allocated memory is still 58.7MB. Free memory was 37.8MB in the beginning and 39.9MB in the end (delta: -2.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-14 15:54:11,098 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.11ms. Allocated memory is still 58.7MB. Free memory was 39.9MB in the beginning and 38.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 15:54:11,098 INFO L158 Benchmark]: Boogie Preprocessor took 18.29ms. Allocated memory is still 58.7MB. Free memory was 38.1MB in the beginning and 36.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 15:54:11,099 INFO L158 Benchmark]: RCFGBuilder took 6064.80ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 36.7MB in the beginning and 53.5MB in the end (delta: -16.8MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2021-12-14 15:54:11,099 INFO L158 Benchmark]: TraceAbstraction took 12698.75ms. Allocated memory is still 71.3MB. Free memory was 53.2MB in the beginning and 47.9MB in the end (delta: 5.3MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2021-12-14 15:54:11,099 INFO L158 Benchmark]: Witness Printer took 23.96ms. Allocated memory is still 71.3MB. Free memory was 47.9MB in the beginning and 46.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 15:54:11,103 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 58.7MB. Free memory was 40.8MB in the beginning and 40.8MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.68ms. Allocated memory is still 58.7MB. Free memory was 37.8MB in the beginning and 39.9MB in the end (delta: -2.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.11ms. Allocated memory is still 58.7MB. Free memory was 39.9MB in the beginning and 38.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.29ms. Allocated memory is still 58.7MB. Free memory was 38.1MB in the beginning and 36.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 6064.80ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 36.7MB in the beginning and 53.5MB in the end (delta: -16.8MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * TraceAbstraction took 12698.75ms. Allocated memory is still 71.3MB. Free memory was 53.2MB in the beginning and 47.9MB in the end (delta: 5.3MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * Witness Printer took 23.96ms. Allocated memory is still 71.3MB. Free memory was 47.9MB in the beginning and 46.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 102]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=1.6961736679077148, \result=1.0078669786453247, x=1.6961736679077148] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=1.6961736679077148, \result=-0.06054672226309776, x=1.6961736679077148] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=1.6961736679077148, x=18.34227752685547] [L102] reach_error() VAL [IN=1.6961736679077148, x=18.34227752685547] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 12.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 5.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 1 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 proved your program to be incorrect! [2021-12-14 15:54:11,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE