./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_1+newton_1_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_1+newton_1_5.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 3fd336a0cf083f3890b8c868f630a501a442e53f25a6db757ae043988dd949bf --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:23:16,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:23:16,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:23:16,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:23:16,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:23:16,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:23:16,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:23:16,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:23:16,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:23:16,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:23:16,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:23:16,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:23:16,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:23:16,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:23:16,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:23:16,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:23:16,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:23:16,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:23:16,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:23:16,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:23:16,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:23:16,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:23:16,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:23:16,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:23:16,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:23:16,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:23:16,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:23:16,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:23:16,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:23:16,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:23:16,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:23:16,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:23:16,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:23:16,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:23:16,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:23:16,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:23:16,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:23:16,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:23:16,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:23:16,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:23:16,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:23:16,483 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:23:16,507 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:23:16,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:23:16,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:23:16,508 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:23:16,508 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:23:16,508 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:23:16,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:23:16,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:23:16,509 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:23:16,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:23:16,510 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:23:16,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:23:16,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:23:16,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:23:16,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:23:16,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:23:16,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:23:16,511 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:23:16,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:23:16,511 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:23:16,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:23:16,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:23:16,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:23:16,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:23:16,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:23:16,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:23:16,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:23:16,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:23:16,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:23:16,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:23:16,513 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:23:16,514 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:23:16,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:23:16,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:23:16,514 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fd336a0cf083f3890b8c868f630a501a442e53f25a6db757ae043988dd949bf [2021-12-21 14:23:16,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:23:16,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:23:16,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:23:16,768 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:23:16,769 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:23:16,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_1+newton_1_5.i [2021-12-21 14:23:16,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/586f9f466/bcb63b22aea44e97823a094cde0c4f2d/FLAGaf52aaedf [2021-12-21 14:23:17,270 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:23:17,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i [2021-12-21 14:23:17,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/586f9f466/bcb63b22aea44e97823a094cde0c4f2d/FLAGaf52aaedf [2021-12-21 14:23:17,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/586f9f466/bcb63b22aea44e97823a094cde0c4f2d [2021-12-21 14:23:17,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:23:17,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:23:17,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:23:17,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:23:17,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:23:17,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:23:17" (1/1) ... [2021-12-21 14:23:17,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6749eb5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:17, skipping insertion in model container [2021-12-21 14:23:17,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:23:17" (1/1) ... [2021-12-21 14:23:17,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:23:17,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:23:17,875 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_1+newton_1_5.i[1226,1239] [2021-12-21 14:23:17,900 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_1+newton_1_5.i[2786,2799] [2021-12-21 14:23:17,901 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:23:17,909 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:23:17,920 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_1+newton_1_5.i[1226,1239] [2021-12-21 14:23:17,931 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_1+newton_1_5.i[2786,2799] [2021-12-21 14:23:17,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:23:17,950 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:23:17,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:17 WrapperNode [2021-12-21 14:23:17,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:23:17,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:23:17,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:23:17,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:23:17,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:17" (1/1) ... [2021-12-21 14:23:17,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:17" (1/1) ... [2021-12-21 14:23:17,986 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-12-21 14:23:17,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:23:17,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:23:17,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:23:17,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:23:17,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:17" (1/1) ... [2021-12-21 14:23:17,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:17" (1/1) ... [2021-12-21 14:23:17,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:17" (1/1) ... [2021-12-21 14:23:17,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:17" (1/1) ... [2021-12-21 14:23:18,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:17" (1/1) ... [2021-12-21 14:23:18,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:17" (1/1) ... [2021-12-21 14:23:18,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:17" (1/1) ... [2021-12-21 14:23:18,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:23:18,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:23:18,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:23:18,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:23:18,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:17" (1/1) ... [2021-12-21 14:23:18,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:23:18,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:23:18,045 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) [2021-12-21 14:23:18,047 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 [2021-12-21 14:23:18,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:23:18,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:23:18,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:23:18,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:23:18,124 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:23:18,126 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:23:18,244 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:23:18,250 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:23:18,250 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 14:23:18,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:23:18 BoogieIcfgContainer [2021-12-21 14:23:18,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:23:18,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:23:18,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:23:18,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:23:18,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:23:17" (1/3) ... [2021-12-21 14:23:18,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0f6e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:23:18, skipping insertion in model container [2021-12-21 14:23:18,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:17" (2/3) ... [2021-12-21 14:23:18,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0f6e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:23:18, skipping insertion in model container [2021-12-21 14:23:18,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:23:18" (3/3) ... [2021-12-21 14:23:18,260 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_5.i [2021-12-21 14:23:18,264 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:23:18,265 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:23:18,305 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:23:18,311 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 [2021-12-21 14:23:18,311 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:23:18,323 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) [2021-12-21 14:23:18,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 14:23:18,328 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:23:18,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:23:18,330 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:23:18,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:23:18,335 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-21 14:23:18,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:23:18,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219748647] [2021-12-21 14:23:18,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:23:18,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:23:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:23:18,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:23:18,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:23:18,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219748647] [2021-12-21 14:23:18,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219748647] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:23:18,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:23:18,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 14:23:18,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915118085] [2021-12-21 14:23:18,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:23:18,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 14:23:18,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:23:18,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 14:23:18,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 14:23:18,549 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) [2021-12-21 14:23:18,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:23:18,572 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-12-21 14:23:18,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 14:23:18,576 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 [2021-12-21 14:23:18,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:23:18,582 INFO L225 Difference]: With dead ends: 46 [2021-12-21 14:23:18,593 INFO L226 Difference]: Without dead ends: 19 [2021-12-21 14:23:18,597 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 [2021-12-21 14:23:18,600 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 [2021-12-21 14:23:18,601 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] [2021-12-21 14:23:18,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-21 14:23:18,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-21 14:23:18,622 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) [2021-12-21 14:23:18,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-21 14:23:18,623 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-21 14:23:18,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:23:18,624 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-21 14:23:18,624 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) [2021-12-21 14:23:18,624 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-21 14:23:18,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 14:23:18,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:23:18,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:23:18,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:23:18,626 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:23:18,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:23:18,626 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-21 14:23:18,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:23:18,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505130634] [2021-12-21 14:23:18,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:23:18,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:23:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 14:23:18,656 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 14:23:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 14:23:18,702 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 14:23:18,702 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 14:23:18,704 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-21 14:23:18,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-21 14:23:18,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:23:18,711 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-21 14:23:18,714 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 14:23:18,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 02:23:18 BoogieIcfgContainer [2021-12-21 14:23:18,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 14:23:18,741 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 14:23:18,741 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 14:23:18,741 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 14:23:18,741 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:23:18" (3/4) ... [2021-12-21 14:23:18,743 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 14:23:18,743 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 14:23:18,744 INFO L158 Benchmark]: Toolchain (without parser) took 1046.94ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 71.6MB in the beginning and 99.0MB in the end (delta: -27.3MB). Peak memory consumption was 1.0MB. Max. memory is 16.1GB. [2021-12-21 14:23:18,745 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 98.6MB. Free memory is still 58.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 14:23:18,745 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.55ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 71.4MB in the beginning and 101.5MB in the end (delta: -30.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 14:23:18,746 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.22ms. Allocated memory is still 125.8MB. Free memory was 101.5MB in the beginning and 99.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 14:23:18,746 INFO L158 Benchmark]: Boogie Preprocessor took 23.25ms. Allocated memory is still 125.8MB. Free memory was 99.4MB in the beginning and 98.5MB in the end (delta: 903.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 14:23:18,747 INFO L158 Benchmark]: RCFGBuilder took 240.87ms. Allocated memory is still 125.8MB. Free memory was 98.5MB in the beginning and 87.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 14:23:18,747 INFO L158 Benchmark]: TraceAbstraction took 486.09ms. Allocated memory is still 125.8MB. Free memory was 87.3MB in the beginning and 99.6MB in the end (delta: -12.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 14:23:18,748 INFO L158 Benchmark]: Witness Printer took 2.96ms. Allocated memory is still 125.8MB. Free memory was 99.0MB in the beginning and 99.0MB in the end (delta: 48.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 14:23:18,750 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 98.6MB. Free memory is still 58.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.55ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 71.4MB in the beginning and 101.5MB in the end (delta: -30.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.22ms. Allocated memory is still 125.8MB. Free memory was 101.5MB in the beginning and 99.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.25ms. Allocated memory is still 125.8MB. Free memory was 99.4MB in the beginning and 98.5MB in the end (delta: 903.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 240.87ms. Allocated memory is still 125.8MB. Free memory was 98.5MB in the beginning and 87.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 486.09ms. Allocated memory is still 125.8MB. Free memory was 87.3MB in the beginning and 99.6MB in the end (delta: -12.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.96ms. Allocated memory is still 125.8MB. Free memory was 99.0MB in the beginning and 99.0MB in the end (delta: 48.2kB). 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 > -1.0f && IN < 1.0f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -1.0f && IN < 1.0f) [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: 0.4s, 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 [2021-12-21 14:23:18,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_1+newton_1_5.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 3fd336a0cf083f3890b8c868f630a501a442e53f25a6db757ae043988dd949bf --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:23:20,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:23:20,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:23:20,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:23:20,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:23:20,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:23:20,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:23:20,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:23:20,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:23:20,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:23:20,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:23:20,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:23:20,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:23:20,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:23:20,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:23:20,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:23:20,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:23:20,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:23:20,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:23:20,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:23:20,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:23:20,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:23:20,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:23:20,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:23:20,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:23:20,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:23:20,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:23:20,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:23:20,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:23:20,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:23:20,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:23:20,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:23:20,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:23:20,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:23:20,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:23:20,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:23:20,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:23:20,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:23:20,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:23:20,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:23:20,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:23:20,830 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-21 14:23:20,865 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:23:20,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:23:20,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:23:20,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:23:20,868 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:23:20,868 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:23:20,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:23:20,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:23:20,870 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:23:20,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:23:20,871 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:23:20,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:23:20,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:23:20,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:23:20,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:23:20,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:23:20,872 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 14:23:20,872 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-21 14:23:20,872 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-21 14:23:20,873 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:23:20,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:23:20,873 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:23:20,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:23:20,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:23:20,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:23:20,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:23:20,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:23:20,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:23:20,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:23:20,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:23:20,881 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-21 14:23:20,881 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-21 14:23:20,881 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:23:20,882 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:23:20,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:23:20,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:23:20,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-21 14:23:20,883 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fd336a0cf083f3890b8c868f630a501a442e53f25a6db757ae043988dd949bf [2021-12-21 14:23:21,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:23:21,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:23:21,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:23:21,249 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:23:21,255 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:23:21,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_1+newton_1_5.i [2021-12-21 14:23:21,319 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4217eb1a/3a1a5d2cb3564543b906ed5caaa5c2cd/FLAG0f4fb5c03 [2021-12-21 14:23:21,767 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:23:21,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i [2021-12-21 14:23:21,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4217eb1a/3a1a5d2cb3564543b906ed5caaa5c2cd/FLAG0f4fb5c03 [2021-12-21 14:23:21,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4217eb1a/3a1a5d2cb3564543b906ed5caaa5c2cd [2021-12-21 14:23:21,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:23:21,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:23:21,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:23:21,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:23:21,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:23:21,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:23:21" (1/1) ... [2021-12-21 14:23:21,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@525772be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:21, skipping insertion in model container [2021-12-21 14:23:21,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:23:21" (1/1) ... [2021-12-21 14:23:21,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:23:21,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:23:21,983 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_1+newton_1_5.i[1226,1239] [2021-12-21 14:23:22,032 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_1+newton_1_5.i[2786,2799] [2021-12-21 14:23:22,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:23:22,065 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:23:22,082 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_1+newton_1_5.i[1226,1239] [2021-12-21 14:23:22,101 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_1+newton_1_5.i[2786,2799] [2021-12-21 14:23:22,107 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:23:22,121 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:23:22,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:22 WrapperNode [2021-12-21 14:23:22,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:23:22,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:23:22,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:23:22,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:23:22,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:22" (1/1) ... [2021-12-21 14:23:22,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:22" (1/1) ... [2021-12-21 14:23:22,180 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-12-21 14:23:22,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:23:22,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:23:22,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:23:22,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:23:22,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:22" (1/1) ... [2021-12-21 14:23:22,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:22" (1/1) ... [2021-12-21 14:23:22,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:22" (1/1) ... [2021-12-21 14:23:22,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:22" (1/1) ... [2021-12-21 14:23:22,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:22" (1/1) ... [2021-12-21 14:23:22,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:22" (1/1) ... [2021-12-21 14:23:22,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:22" (1/1) ... [2021-12-21 14:23:22,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:23:22,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:23:22,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:23:22,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:23:22,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:22" (1/1) ... [2021-12-21 14:23:22,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:23:22,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:23:22,259 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) [2021-12-21 14:23:22,287 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 [2021-12-21 14:23:22,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:23:22,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-21 14:23:22,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:23:22,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:23:22,377 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:23:22,378 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:23:28,648 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:23:28,652 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:23:28,653 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 14:23:28,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:23:28 BoogieIcfgContainer [2021-12-21 14:23:28,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:23:28,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:23:28,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:23:28,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:23:28,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:23:21" (1/3) ... [2021-12-21 14:23:28,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e94fc92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:23:28, skipping insertion in model container [2021-12-21 14:23:28,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:22" (2/3) ... [2021-12-21 14:23:28,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e94fc92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:23:28, skipping insertion in model container [2021-12-21 14:23:28,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:23:28" (3/3) ... [2021-12-21 14:23:28,663 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_5.i [2021-12-21 14:23:28,667 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:23:28,668 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:23:28,718 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:23:28,723 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 [2021-12-21 14:23:28,724 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:23:28,735 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) [2021-12-21 14:23:28,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 14:23:28,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:23:28,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:23:28,741 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:23:28,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:23:28,748 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-21 14:23:28,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 14:23:28,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625521435] [2021-12-21 14:23:28,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:23:28,761 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 14:23:28,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 14:23:28,765 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) [2021-12-21 14:23:28,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-21 14:23:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:23:29,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 14:23:29,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 14:23:29,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:23:29,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 14:23:29,874 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 14:23:29,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625521435] [2021-12-21 14:23:29,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625521435] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:23:29,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:23:29,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 14:23:29,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955277199] [2021-12-21 14:23:29,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:23:29,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 14:23:29,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 14:23:29,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 14:23:29,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 14:23:29,905 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) [2021-12-21 14:23:29,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:23:29,918 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-12-21 14:23:29,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 14:23:29,923 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 [2021-12-21 14:23:29,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:23:29,929 INFO L225 Difference]: With dead ends: 46 [2021-12-21 14:23:29,930 INFO L226 Difference]: Without dead ends: 19 [2021-12-21 14:23:29,932 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 [2021-12-21 14:23:29,936 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 [2021-12-21 14:23:29,937 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] [2021-12-21 14:23:29,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-21 14:23:29,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-21 14:23:29,962 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) [2021-12-21 14:23:29,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-21 14:23:29,965 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-21 14:23:29,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:23:29,965 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-21 14:23:29,966 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) [2021-12-21 14:23:29,966 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-21 14:23:29,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 14:23:29,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:23:29,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:23:30,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-21 14:23:30,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 14:23:30,181 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:23:30,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:23:30,182 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-21 14:23:30,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 14:23:30,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668862796] [2021-12-21 14:23:30,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:23:30,183 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 14:23:30,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 14:23:30,185 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 14:23:30,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-21 14:24:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 14:24:06,530 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 14:24:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 14:24:22,250 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-21 14:24:22,250 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 14:24:22,251 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-21 14:24:22,258 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-21 14:24:22,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-21 14:24:22,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 14:24:22,461 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-21 14:24:22,464 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 14:24:22,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 02:24:22 BoogieIcfgContainer [2021-12-21 14:24:22,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 14:24:22,485 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 14:24:22,485 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 14:24:22,485 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 14:24:22,486 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:23:28" (3/4) ... [2021-12-21 14:24:22,487 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-21 14:24:22,518 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 14:24:22,518 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 14:24:22,519 INFO L158 Benchmark]: Toolchain (without parser) took 60717.51ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 39.8MB in the beginning and 51.7MB in the end (delta: -11.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 14:24:22,519 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory is still 42.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 14:24:22,520 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.48ms. Allocated memory is still 60.8MB. Free memory was 39.6MB in the beginning and 42.2MB in the end (delta: -2.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-21 14:24:22,520 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.50ms. Allocated memory is still 60.8MB. Free memory was 41.9MB in the beginning and 40.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 14:24:22,521 INFO L158 Benchmark]: Boogie Preprocessor took 49.89ms. Allocated memory is still 60.8MB. Free memory was 40.3MB in the beginning and 38.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 14:24:22,521 INFO L158 Benchmark]: RCFGBuilder took 6423.17ms. Allocated memory is still 60.8MB. Free memory was 38.7MB in the beginning and 28.4MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 14:24:22,522 INFO L158 Benchmark]: TraceAbstraction took 53827.68ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 28.0MB in the beginning and 53.5MB in the end (delta: -25.6MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2021-12-21 14:24:22,522 INFO L158 Benchmark]: Witness Printer took 32.95ms. Allocated memory is still 73.4MB. Free memory was 53.5MB in the beginning and 51.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 14:24:22,525 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory is still 42.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.48ms. Allocated memory is still 60.8MB. Free memory was 39.6MB in the beginning and 42.2MB in the end (delta: -2.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.50ms. Allocated memory is still 60.8MB. Free memory was 41.9MB in the beginning and 40.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.89ms. Allocated memory is still 60.8MB. Free memory was 40.3MB in the beginning and 38.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 6423.17ms. Allocated memory is still 60.8MB. Free memory was 38.7MB in the beginning and 28.4MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 53827.68ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 28.0MB in the beginning and 53.5MB in the end (delta: -25.6MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. * Witness Printer took 32.95ms. Allocated memory is still 73.4MB. Free memory was 53.5MB in the beginning and 51.7MB in the end (delta: 1.9MB). 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 > -1.0f && IN < 1.0f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -1.0f && IN < 1.0f) [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)=-0.7001767754554749, \result=-0.644385576248169, x=-0.7001767754554749] [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)=-0.7001767754554749, \result=0.7650542259216309, x=-0.7001767754554749] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=-0.7001767754554749, x=0.1420975923538208] [L102] reach_error() VAL [IN=-0.7001767754554749, x=0.1420975923538208] - 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: 53.7s, 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, 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, 37.2s 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! [2021-12-21 14:24:22,682 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