./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_4+newton_1_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_4+newton_1_4.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 92ec86adef8cb9d9932012bcdd4007cb403d7f8d56dfb46a7c8cdbf60f080fa5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:31:14,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:31:14,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:31:14,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:31:14,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:31:14,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:31:14,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:31:14,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:31:14,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:31:14,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:31:14,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:31:14,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:31:14,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:31:14,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:31:14,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:31:14,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:31:14,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:31:14,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:31:14,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:31:14,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:31:14,515 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:31:14,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:31:14,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:31:14,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:31:14,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:31:14,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:31:14,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:31:14,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:31:14,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:31:14,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:31:14,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:31:14,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:31:14,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:31:14,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:31:14,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:31:14,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:31:14,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:31:14,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:31:14,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:31:14,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:31:14,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:31:14,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:31:14,541 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:31:14,567 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:31:14,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:31:14,568 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:31:14,568 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:31:14,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:31:14,569 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:31:14,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:31:14,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:31:14,570 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:31:14,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:31:14,571 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:31:14,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:31:14,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:31:14,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:31:14,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:31:14,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:31:14,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:31:14,572 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:31:14,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:31:14,572 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:31:14,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:31:14,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:31:14,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:31:14,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:31:14,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:31:14,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:31:14,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:31:14,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:31:14,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:31:14,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:31:14,575 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:31:14,575 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:31:14,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:31:14,575 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92ec86adef8cb9d9932012bcdd4007cb403d7f8d56dfb46a7c8cdbf60f080fa5 [2022-07-13 20:31:14,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:31:14,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:31:14,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:31:14,848 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:31:14,848 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:31:14,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_1_4.i [2022-07-13 20:31:14,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a491705c9/8c340a8630a84b28973a99f80f1cb7bd/FLAGbe1a53ada [2022-07-13 20:31:15,281 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:31:15,283 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_4.i [2022-07-13 20:31:15,290 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a491705c9/8c340a8630a84b28973a99f80f1cb7bd/FLAGbe1a53ada [2022-07-13 20:31:15,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a491705c9/8c340a8630a84b28973a99f80f1cb7bd [2022-07-13 20:31:15,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:31:15,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:31:15,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:31:15,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:31:15,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:31:15,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:31:15" (1/1) ... [2022-07-13 20:31:15,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d747871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:15, skipping insertion in model container [2022-07-13 20:31:15,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:31:15" (1/1) ... [2022-07-13 20:31:15,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:31:15,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:31:15,863 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_4+newton_1_4.i[1224,1237] [2022-07-13 20:31:15,883 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_4+newton_1_4.i[2806,2819] [2022-07-13 20:31:15,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:31:15,890 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:31:15,898 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_4+newton_1_4.i[1224,1237] [2022-07-13 20:31:15,905 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_4+newton_1_4.i[2806,2819] [2022-07-13 20:31:15,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:31:15,918 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:31:15,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:15 WrapperNode [2022-07-13 20:31:15,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:31:15,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:31:15,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:31:15,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:31:15,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:15" (1/1) ... [2022-07-13 20:31:15,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:15" (1/1) ... [2022-07-13 20:31:15,949 INFO L137 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 73 [2022-07-13 20:31:15,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:31:15,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:31:15,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:31:15,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:31:15,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:15" (1/1) ... [2022-07-13 20:31:15,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:15" (1/1) ... [2022-07-13 20:31:15,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:15" (1/1) ... [2022-07-13 20:31:15,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:15" (1/1) ... [2022-07-13 20:31:15,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:15" (1/1) ... [2022-07-13 20:31:15,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:15" (1/1) ... [2022-07-13 20:31:15,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:15" (1/1) ... [2022-07-13 20:31:15,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:31:15,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:31:15,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:31:15,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:31:15,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:15" (1/1) ... [2022-07-13 20:31:15,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:31:15,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:31:16,012 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 20:31:16,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 20:31:16,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:31:16,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:31:16,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:31:16,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:31:16,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 20:31:16,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 20:31:16,107 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:31:16,110 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:31:16,280 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:31:16,285 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:31:16,285 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 20:31:16,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:31:16 BoogieIcfgContainer [2022-07-13 20:31:16,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:31:16,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:31:16,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:31:16,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:31:16,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:31:15" (1/3) ... [2022-07-13 20:31:16,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3fd066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:31:16, skipping insertion in model container [2022-07-13 20:31:16,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:15" (2/3) ... [2022-07-13 20:31:16,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3fd066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:31:16, skipping insertion in model container [2022-07-13 20:31:16,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:31:16" (3/3) ... [2022-07-13 20:31:16,294 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_4.i [2022-07-13 20:31:16,306 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:31:16,306 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:31:16,342 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:31:16,362 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3026b15c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3130aca [2022-07-13 20:31:16,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:31:16,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 20:31:16,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 20:31:16,380 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:31:16,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:31:16,381 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:31:16,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:31:16,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2022-07-13 20:31:16,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:31:16,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003139979] [2022-07-13 20:31:16,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:31:16,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:31:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:31:16,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:31:16,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:31:16,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003139979] [2022-07-13 20:31:16,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003139979] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:31:16,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:31:16,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 20:31:16,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906077034] [2022-07-13 20:31:16,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:31:16,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 20:31:16,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:31:16,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 20:31:16,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 20:31:16,579 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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) [2022-07-13 20:31:16,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:31:16,606 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2022-07-13 20:31:16,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 20:31:16,608 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 [2022-07-13 20:31:16,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:31:16,615 INFO L225 Difference]: With dead ends: 57 [2022-07-13 20:31:16,615 INFO L226 Difference]: Without dead ends: 26 [2022-07-13 20:31:16,620 INFO L412 NwaCegarLoop]: 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 [2022-07-13 20:31:16,624 INFO L413 NwaCegarLoop]: 40 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, 40 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 [2022-07-13 20:31:16,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:31:16,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-13 20:31:16,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-13 20:31:16,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 20:31:16,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-07-13 20:31:16,673 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2022-07-13 20:31:16,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:31:16,673 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-07-13 20:31:16,674 INFO L496 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) [2022-07-13 20:31:16,674 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-07-13 20:31:16,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 20:31:16,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:31:16,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:31:16,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:31:16,676 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:31:16,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:31:16,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2022-07-13 20:31:16,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:31:16,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23179014] [2022-07-13 20:31:16,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:31:16,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:31:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 20:31:16,706 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 20:31:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 20:31:16,741 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 20:31:16,741 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 20:31:16,745 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-13 20:31:16,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-13 20:31:16,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:31:16,752 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-13 20:31:16,757 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 20:31:16,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 08:31:16 BoogieIcfgContainer [2022-07-13 20:31:16,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 20:31:16,791 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 20:31:16,792 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 20:31:16,792 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 20:31:16,792 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:31:16" (3/4) ... [2022-07-13 20:31:16,795 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 20:31:16,796 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 20:31:16,798 INFO L158 Benchmark]: Toolchain (without parser) took 1093.30ms. Allocated memory is still 125.8MB. Free memory was 93.5MB in the beginning and 62.7MB in the end (delta: 30.7MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-07-13 20:31:16,798 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 42.6MB in the beginning and 42.5MB in the end (delta: 44.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 20:31:16,800 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.65ms. Allocated memory is still 125.8MB. Free memory was 93.2MB in the beginning and 101.2MB in the end (delta: -8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 20:31:16,801 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.82ms. Allocated memory is still 125.8MB. Free memory was 101.2MB in the beginning and 99.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 20:31:16,803 INFO L158 Benchmark]: Boogie Preprocessor took 19.77ms. Allocated memory is still 125.8MB. Free memory was 99.1MB in the beginning and 97.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 20:31:16,804 INFO L158 Benchmark]: RCFGBuilder took 315.98ms. Allocated memory is still 125.8MB. Free memory was 97.7MB in the beginning and 87.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 20:31:16,805 INFO L158 Benchmark]: TraceAbstraction took 495.29ms. Allocated memory is still 125.8MB. Free memory was 86.5MB in the beginning and 62.7MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-07-13 20:31:16,805 INFO L158 Benchmark]: Witness Printer took 4.43ms. Allocated memory is still 125.8MB. Free memory is still 62.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 20:31:16,809 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 42.6MB in the beginning and 42.5MB in the end (delta: 44.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.65ms. Allocated memory is still 125.8MB. Free memory was 93.2MB in the beginning and 101.2MB in the end (delta: -8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.82ms. Allocated memory is still 125.8MB. Free memory was 101.2MB in the beginning and 99.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.77ms. Allocated memory is still 125.8MB. Free memory was 99.1MB in the beginning and 97.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 315.98ms. Allocated memory is still 125.8MB. Free memory was 97.7MB in the beginning and 87.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 495.29ms. Allocated memory is still 125.8MB. Free memory was 86.5MB in the beginning and 62.7MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 4.43ms. Allocated memory is still 125.8MB. Free memory is still 62.7MB. 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: 109]: 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 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 100. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L100] CALL, EXPR f(IN) [L87] 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] [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] 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] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=49] [L109] 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 2 procedures, 33 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, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 40 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, 40 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=33occurred 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 [2022-07-13 20:31:16,849 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_4+newton_1_4.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 92ec86adef8cb9d9932012bcdd4007cb403d7f8d56dfb46a7c8cdbf60f080fa5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:31:18,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:31:18,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:31:18,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:31:18,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:31:18,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:31:18,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:31:18,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:31:18,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:31:18,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:31:18,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:31:18,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:31:18,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:31:18,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:31:18,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:31:18,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:31:18,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:31:18,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:31:18,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:31:18,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:31:18,855 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:31:18,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:31:18,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:31:18,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:31:18,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:31:18,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:31:18,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:31:18,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:31:18,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:31:18,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:31:18,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:31:18,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:31:18,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:31:18,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:31:18,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:31:18,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:31:18,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:31:18,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:31:18,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:31:18,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:31:18,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:31:18,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:31:18,882 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 20:31:18,913 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:31:18,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:31:18,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:31:18,914 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:31:18,915 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:31:18,915 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:31:18,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:31:18,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:31:18,916 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:31:18,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:31:18,917 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:31:18,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:31:18,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:31:18,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:31:18,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:31:18,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:31:18,918 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 20:31:18,919 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 20:31:18,919 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 20:31:18,919 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:31:18,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:31:18,919 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:31:18,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:31:18,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:31:18,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:31:18,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:31:18,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:31:18,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:31:18,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:31:18,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:31:18,921 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 20:31:18,921 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 20:31:18,921 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:31:18,922 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:31:18,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:31:18,922 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 20:31:18,922 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92ec86adef8cb9d9932012bcdd4007cb403d7f8d56dfb46a7c8cdbf60f080fa5 [2022-07-13 20:31:19,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:31:19,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:31:19,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:31:19,256 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:31:19,256 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:31:19,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_1_4.i [2022-07-13 20:31:19,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7d4e6cb9/5a0c73c7e9ea4666bbe41207613b6b15/FLAG95a24c564 [2022-07-13 20:31:19,723 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:31:19,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_4.i [2022-07-13 20:31:19,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7d4e6cb9/5a0c73c7e9ea4666bbe41207613b6b15/FLAG95a24c564 [2022-07-13 20:31:20,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7d4e6cb9/5a0c73c7e9ea4666bbe41207613b6b15 [2022-07-13 20:31:20,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:31:20,120 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:31:20,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:31:20,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:31:20,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:31:20,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:31:20" (1/1) ... [2022-07-13 20:31:20,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f76221d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:20, skipping insertion in model container [2022-07-13 20:31:20,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:31:20" (1/1) ... [2022-07-13 20:31:20,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:31:20,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:31:20,266 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_4+newton_1_4.i[1224,1237] [2022-07-13 20:31:20,297 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_4+newton_1_4.i[2806,2819] [2022-07-13 20:31:20,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:31:20,344 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:31:20,377 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_4+newton_1_4.i[1224,1237] [2022-07-13 20:31:20,398 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_4+newton_1_4.i[2806,2819] [2022-07-13 20:31:20,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:31:20,416 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:31:20,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:20 WrapperNode [2022-07-13 20:31:20,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:31:20,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:31:20,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:31:20,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:31:20,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:20" (1/1) ... [2022-07-13 20:31:20,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:20" (1/1) ... [2022-07-13 20:31:20,474 INFO L137 Inliner]: procedures = 28, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 70 [2022-07-13 20:31:20,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:31:20,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:31:20,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:31:20,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:31:20,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:20" (1/1) ... [2022-07-13 20:31:20,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:20" (1/1) ... [2022-07-13 20:31:20,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:20" (1/1) ... [2022-07-13 20:31:20,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:20" (1/1) ... [2022-07-13 20:31:20,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:20" (1/1) ... [2022-07-13 20:31:20,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:20" (1/1) ... [2022-07-13 20:31:20,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:20" (1/1) ... [2022-07-13 20:31:20,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:31:20,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:31:20,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:31:20,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:31:20,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:20" (1/1) ... [2022-07-13 20:31:20,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:31:20,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:31:20,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 20:31:20,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 20:31:20,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:31:20,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 20:31:20,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:31:20,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:31:20,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 20:31:20,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 20:31:20,675 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:31:20,676 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:31:27,436 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:31:27,442 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:31:27,442 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 20:31:27,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:31:27 BoogieIcfgContainer [2022-07-13 20:31:27,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:31:27,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:31:27,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:31:27,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:31:27,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:31:20" (1/3) ... [2022-07-13 20:31:27,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abc21f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:31:27, skipping insertion in model container [2022-07-13 20:31:27,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:31:20" (2/3) ... [2022-07-13 20:31:27,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abc21f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:31:27, skipping insertion in model container [2022-07-13 20:31:27,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:31:27" (3/3) ... [2022-07-13 20:31:27,465 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_4.i [2022-07-13 20:31:27,475 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:31:27,475 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:31:27,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:31:27,515 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4befb132, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@38cc79d8 [2022-07-13 20:31:27,515 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:31:27,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 20:31:27,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 20:31:27,524 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:31:27,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:31:27,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:31:27,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:31:27,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2022-07-13 20:31:27,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 20:31:27,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934708975] [2022-07-13 20:31:27,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:31:27,542 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 20:31:27,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 20:31:27,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 20:31:27,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 20:31:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:31:28,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 20:31:28,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:31:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:31:28,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:31:28,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 20:31:28,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934708975] [2022-07-13 20:31:28,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934708975] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:31:28,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:31:28,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 20:31:28,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190493049] [2022-07-13 20:31:28,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:31:28,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 20:31:28,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 20:31:28,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 20:31:28,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 20:31:28,641 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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) [2022-07-13 20:31:28,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:31:28,658 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2022-07-13 20:31:28,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 20:31:28,660 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 [2022-07-13 20:31:28,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:31:28,666 INFO L225 Difference]: With dead ends: 57 [2022-07-13 20:31:28,667 INFO L226 Difference]: Without dead ends: 26 [2022-07-13 20:31:28,670 INFO L412 NwaCegarLoop]: 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 [2022-07-13 20:31:28,673 INFO L413 NwaCegarLoop]: 40 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, 40 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 [2022-07-13 20:31:28,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:31:28,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-13 20:31:28,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-13 20:31:28,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 20:31:28,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-07-13 20:31:28,701 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2022-07-13 20:31:28,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:31:28,701 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-07-13 20:31:28,702 INFO L496 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) [2022-07-13 20:31:28,702 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-07-13 20:31:28,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 20:31:28,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:31:28,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:31:28,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-13 20:31:28,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 20:31:28,908 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:31:28,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:31:28,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2022-07-13 20:31:28,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 20:31:28,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579741138] [2022-07-13 20:31:28,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:31:28,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 20:31:28,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 20:31:28,911 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 20:31:28,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-13 20:32:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 20:32:11,532 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 20:35:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 20:35:42,936 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-13 20:35:42,937 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 20:35:42,938 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-13 20:35:42,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-13 20:35:42,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-13 20:35:43,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 20:35:43,144 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-13 20:35:43,147 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 20:35:43,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 08:35:43 BoogieIcfgContainer [2022-07-13 20:35:43,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 20:35:43,184 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 20:35:43,184 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 20:35:43,184 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 20:35:43,184 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:31:27" (3/4) ... [2022-07-13 20:35:43,186 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-13 20:35:43,233 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 20:35:43,236 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 20:35:43,236 INFO L158 Benchmark]: Toolchain (without parser) took 263115.94ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.6MB in the beginning and 37.8MB in the end (delta: -8.2MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. [2022-07-13 20:35:43,237 INFO L158 Benchmark]: CDTParser took 0.65ms. Allocated memory is still 52.4MB. Free memory was 34.5MB in the beginning and 34.5MB in the end (delta: 37.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 20:35:43,237 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.33ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.3MB in the beginning and 44.9MB in the end (delta: -15.5MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2022-07-13 20:35:43,238 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.29ms. Allocated memory is still 62.9MB. Free memory was 44.9MB in the beginning and 43.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 20:35:43,238 INFO L158 Benchmark]: Boogie Preprocessor took 50.30ms. Allocated memory is still 62.9MB. Free memory was 43.1MB in the beginning and 41.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 20:35:43,239 INFO L158 Benchmark]: RCFGBuilder took 6916.95ms. Allocated memory is still 62.9MB. Free memory was 41.7MB in the beginning and 31.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 20:35:43,239 INFO L158 Benchmark]: TraceAbstraction took 255726.52ms. Allocated memory is still 62.9MB. Free memory was 45.5MB in the beginning and 39.6MB in the end (delta: 5.9MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2022-07-13 20:35:43,239 INFO L158 Benchmark]: Witness Printer took 52.22ms. Allocated memory is still 62.9MB. Free memory was 39.6MB in the beginning and 37.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 20:35:43,244 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65ms. Allocated memory is still 52.4MB. Free memory was 34.5MB in the beginning and 34.5MB in the end (delta: 37.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.33ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.3MB in the beginning and 44.9MB in the end (delta: -15.5MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.29ms. Allocated memory is still 62.9MB. Free memory was 44.9MB in the beginning and 43.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.30ms. Allocated memory is still 62.9MB. Free memory was 43.1MB in the beginning and 41.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 6916.95ms. Allocated memory is still 62.9MB. Free memory was 41.7MB in the beginning and 31.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 255726.52ms. Allocated memory is still 62.9MB. Free memory was 45.5MB in the beginning and 39.6MB in the end (delta: 5.9MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * Witness Printer took 52.22ms. Allocated memory is still 62.9MB. Free memory was 39.6MB in the beginning and 37.8MB 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: 109]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L100] CALL, EXPR f(IN) [L87] 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)=-0.6912366151809692, \result=-0.6375202536582947, x=-0.6912366151809692] [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-0.6912366151809692, \result=0.7707600593566895, x=-0.6912366151809692] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=-0.6912366151809692, x=0.13589531183242798] [L109] reach_error() VAL [IN=-0.6912366151809692, x=0.13589531183242798] - 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 2 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 255.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 40 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, 40 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=33occurred 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, 43.5s 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! [2022-07-13 20:35:43,395 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