./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_4+newton_1_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_4+newton_1_7.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 5bba7076723828a76d549dab99f9f19216b374670dd0bb1f48d42a5f4a5ac3a7 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:58:04,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:58:04,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:58:04,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:58:04,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:58:04,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:58:04,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:58:04,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:58:04,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:58:04,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:58:04,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:58:04,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:58:04,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:58:04,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:58:04,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:58:04,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:58:04,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:58:04,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:58:04,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:58:04,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:58:04,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:58:04,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:58:04,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:58:04,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:58:04,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:58:04,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:58:04,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:58:04,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:58:04,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:58:04,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:58:04,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:58:04,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:58:04,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:58:04,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:58:04,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:58:04,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:58:04,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:58:04,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:58:04,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:58:04,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:58:04,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:58:04,668 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:58:04,693 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:58:04,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:58:04,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:58:04,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:58:04,696 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:58:04,696 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:58:04,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:58:04,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:58:04,697 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:58:04,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:58:04,697 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:58:04,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:58:04,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:58:04,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:58:04,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:58:04,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:58:04,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:58:04,698 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:58:04,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:58:04,699 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:58:04,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:58:04,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:58:04,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:58:04,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:58:04,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:58:04,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:58:04,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:58:04,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:58:04,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:58:04,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:58:04,701 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:58:04,701 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:58:04,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:58:04,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:58:04,702 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bba7076723828a76d549dab99f9f19216b374670dd0bb1f48d42a5f4a5ac3a7 [2021-12-14 15:58:04,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:58:04,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:58:04,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:58:04,895 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:58:04,895 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:58:04,896 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_1_7.i [2021-12-14 15:58:04,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06505d3e9/bc5966dbbf7f4c01834c1f7fce8772ef/FLAG197a98e23 [2021-12-14 15:58:05,315 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:58:05,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i [2021-12-14 15:58:05,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06505d3e9/bc5966dbbf7f4c01834c1f7fce8772ef/FLAG197a98e23 [2021-12-14 15:58:05,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06505d3e9/bc5966dbbf7f4c01834c1f7fce8772ef [2021-12-14 15:58:05,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:58:05,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:58:05,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:58:05,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:58:05,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:58:05,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:58:05" (1/1) ... [2021-12-14 15:58:05,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@676d4a77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:05, skipping insertion in model container [2021-12-14 15:58:05,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:58:05" (1/1) ... [2021-12-14 15:58:05,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:58:05,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:58:05,511 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_7.i[1224,1237] [2021-12-14 15:58:05,547 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_7.i[2806,2819] [2021-12-14 15:58:05,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:58:05,555 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:58:05,568 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_7.i[1224,1237] [2021-12-14 15:58:05,589 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_7.i[2806,2819] [2021-12-14 15:58:05,590 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:58:05,599 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:58:05,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:05 WrapperNode [2021-12-14 15:58:05,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:58:05,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:58:05,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:58:05,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:58:05,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:05" (1/1) ... [2021-12-14 15:58:05,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:05" (1/1) ... [2021-12-14 15:58:05,642 INFO L137 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 73 [2021-12-14 15:58:05,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:58:05,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:58:05,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:58:05,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:58:05,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:05" (1/1) ... [2021-12-14 15:58:05,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:05" (1/1) ... [2021-12-14 15:58:05,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:05" (1/1) ... [2021-12-14 15:58:05,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:05" (1/1) ... [2021-12-14 15:58:05,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:05" (1/1) ... [2021-12-14 15:58:05,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:05" (1/1) ... [2021-12-14 15:58:05,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:05" (1/1) ... [2021-12-14 15:58:05,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:58:05,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:58:05,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:58:05,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:58:05,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:05" (1/1) ... [2021-12-14 15:58:05,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:58:05,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:58:05,733 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 15:58:05,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 15:58:05,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:58:05,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:58:05,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:58:05,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:58:05,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 15:58:05,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 15:58:05,814 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:58:05,815 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:58:05,952 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:58:05,956 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:58:05,956 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 15:58:05,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:58:05 BoogieIcfgContainer [2021-12-14 15:58:05,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:58:05,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:58:05,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:58:05,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:58:05,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:58:05" (1/3) ... [2021-12-14 15:58:05,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6371e862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:58:05, skipping insertion in model container [2021-12-14 15:58:05,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:05" (2/3) ... [2021-12-14 15:58:05,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6371e862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:58:05, skipping insertion in model container [2021-12-14 15:58:05,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:58:05" (3/3) ... [2021-12-14 15:58:05,965 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_7.i [2021-12-14 15:58:05,968 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:58:05,969 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:58:06,013 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:58:06,018 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 15:58:06,018 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:58:06,045 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) [2021-12-14 15:58:06,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-14 15:58:06,048 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:58:06,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:58:06,048 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:58:06,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:58:06,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2021-12-14 15:58:06,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:58:06,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246315536] [2021-12-14 15:58:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:58:06,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:58:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:58:06,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:58:06,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:58:06,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246315536] [2021-12-14 15:58:06,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246315536] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:58:06,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:58:06,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 15:58:06,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197150115] [2021-12-14 15:58:06,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:58:06,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 15:58:06,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:58:06,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 15:58:06,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 15:58:06,203 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) [2021-12-14 15:58:06,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:58:06,219 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2021-12-14 15:58:06,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 15:58:06,221 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-14 15:58:06,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:58:06,226 INFO L225 Difference]: With dead ends: 57 [2021-12-14 15:58:06,226 INFO L226 Difference]: Without dead ends: 26 [2021-12-14 15:58:06,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 15:58:06,232 INFO L933 BasicCegarLoop]: 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 [2021-12-14 15:58:06,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:58:06,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-14 15:58:06,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-14 15:58:06,261 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) [2021-12-14 15:58:06,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-12-14 15:58:06,263 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2021-12-14 15:58:06,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:58:06,263 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-12-14 15:58:06,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:58:06,264 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-12-14 15:58:06,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-14 15:58:06,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:58:06,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:58:06,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:58:06,266 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:58:06,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:58:06,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2021-12-14 15:58:06,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:58:06,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041750631] [2021-12-14 15:58:06,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:58:06,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:58:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 15:58:06,282 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 15:58:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 15:58:06,311 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 15:58:06,312 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 15:58:06,313 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-14 15:58:06,314 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-14 15:58:06,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:58:06,324 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-14 15:58:06,326 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 15:58:06,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:58:06 BoogieIcfgContainer [2021-12-14 15:58:06,340 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 15:58:06,340 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 15:58:06,340 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 15:58:06,341 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 15:58:06,341 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:58:05" (3/4) ... [2021-12-14 15:58:06,343 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 15:58:06,343 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 15:58:06,344 INFO L158 Benchmark]: Toolchain (without parser) took 1004.28ms. Allocated memory is still 136.3MB. Free memory was 104.0MB in the beginning and 72.4MB in the end (delta: 31.6MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2021-12-14 15:58:06,344 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory was 37.2MB in the beginning and 37.2MB in the end (delta: 36.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 15:58:06,344 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.49ms. Allocated memory is still 136.3MB. Free memory was 103.7MB in the beginning and 110.1MB in the end (delta: -6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 15:58:06,345 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.21ms. Allocated memory is still 136.3MB. Free memory was 110.1MB in the beginning and 108.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 15:58:06,345 INFO L158 Benchmark]: Boogie Preprocessor took 46.99ms. Allocated memory is still 136.3MB. Free memory was 108.0MB in the beginning and 107.2MB in the end (delta: 805.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 15:58:06,345 INFO L158 Benchmark]: RCFGBuilder took 266.98ms. Allocated memory is still 136.3MB. Free memory was 107.2MB in the beginning and 96.2MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 15:58:06,346 INFO L158 Benchmark]: TraceAbstraction took 380.38ms. Allocated memory is still 136.3MB. Free memory was 95.4MB in the beginning and 72.4MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-14 15:58:06,346 INFO L158 Benchmark]: Witness Printer took 2.88ms. Allocated memory is still 136.3MB. Free memory is still 72.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 15:58:06,348 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory was 37.2MB in the beginning and 37.2MB in the end (delta: 36.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.49ms. Allocated memory is still 136.3MB. Free memory was 103.7MB in the beginning and 110.1MB in the end (delta: -6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.21ms. Allocated memory is still 136.3MB. Free memory was 110.1MB in the beginning and 108.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.99ms. Allocated memory is still 136.3MB. Free memory was 108.0MB in the beginning and 107.2MB in the end (delta: 805.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 266.98ms. Allocated memory is still 136.3MB. Free memory was 107.2MB in the beginning and 96.2MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 380.38ms. Allocated memory is still 136.3MB. Free memory was 95.4MB in the beginning and 72.4MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 2.88ms. Allocated memory is still 136.3MB. Free memory is still 72.4MB. 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 > -1.4f && IN < 1.4f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [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: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 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 [2021-12-14 15:58:06,380 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_4+newton_1_7.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 5bba7076723828a76d549dab99f9f19216b374670dd0bb1f48d42a5f4a5ac3a7 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:58:08,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:58:08,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:58:08,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:58:08,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:58:08,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:58:08,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:58:08,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:58:08,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:58:08,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:58:08,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:58:08,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:58:08,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:58:08,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:58:08,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:58:08,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:58:08,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:58:08,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:58:08,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:58:08,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:58:08,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:58:08,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:58:08,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:58:08,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:58:08,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:58:08,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:58:08,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:58:08,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:58:08,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:58:08,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:58:08,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:58:08,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:58:08,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:58:08,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:58:08,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:58:08,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:58:08,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:58:08,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:58:08,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:58:08,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:58:08,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:58:08,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-14 15:58:08,259 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:58:08,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:58:08,260 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:58:08,260 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:58:08,261 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:58:08,261 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:58:08,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:58:08,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:58:08,262 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:58:08,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:58:08,263 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:58:08,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:58:08,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:58:08,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:58:08,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:58:08,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:58:08,264 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 15:58:08,264 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 15:58:08,264 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 15:58:08,264 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:58:08,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:58:08,264 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:58:08,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:58:08,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:58:08,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:58:08,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:58:08,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:58:08,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:58:08,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:58:08,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:58:08,266 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 15:58:08,266 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 15:58:08,266 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:58:08,266 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:58:08,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:58:08,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:58:08,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 15:58:08,267 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bba7076723828a76d549dab99f9f19216b374670dd0bb1f48d42a5f4a5ac3a7 [2021-12-14 15:58:08,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:58:08,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:58:08,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:58:08,527 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:58:08,527 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:58:08,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_1_7.i [2021-12-14 15:58:08,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d31a546d/5fd9a69a672a48b3b632685e6c3efdef/FLAG2814674d0 [2021-12-14 15:58:08,946 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:58:08,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i [2021-12-14 15:58:08,951 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d31a546d/5fd9a69a672a48b3b632685e6c3efdef/FLAG2814674d0 [2021-12-14 15:58:08,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d31a546d/5fd9a69a672a48b3b632685e6c3efdef [2021-12-14 15:58:08,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:58:08,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:58:08,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:58:08,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:58:08,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:58:08,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:58:08" (1/1) ... [2021-12-14 15:58:08,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b51c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:08, skipping insertion in model container [2021-12-14 15:58:08,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:58:08" (1/1) ... [2021-12-14 15:58:08,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:58:08,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:58:09,069 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_7.i[1224,1237] [2021-12-14 15:58:09,104 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_7.i[2806,2819] [2021-12-14 15:58:09,108 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:58:09,146 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:58:09,161 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_7.i[1224,1237] [2021-12-14 15:58:09,183 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_7.i[2806,2819] [2021-12-14 15:58:09,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:58:09,194 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:58:09,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:09 WrapperNode [2021-12-14 15:58:09,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:58:09,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:58:09,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:58:09,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:58:09,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:09" (1/1) ... [2021-12-14 15:58:09,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:09" (1/1) ... [2021-12-14 15:58:09,235 INFO L137 Inliner]: procedures = 28, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 70 [2021-12-14 15:58:09,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:58:09,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:58:09,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:58:09,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:58:09,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:09" (1/1) ... [2021-12-14 15:58:09,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:09" (1/1) ... [2021-12-14 15:58:09,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:09" (1/1) ... [2021-12-14 15:58:09,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:09" (1/1) ... [2021-12-14 15:58:09,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:09" (1/1) ... [2021-12-14 15:58:09,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:09" (1/1) ... [2021-12-14 15:58:09,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:09" (1/1) ... [2021-12-14 15:58:09,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:58:09,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:58:09,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:58:09,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:58:09,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:09" (1/1) ... [2021-12-14 15:58:09,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:58:09,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:58:09,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 15:58:09,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 15:58:09,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:58:09,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 15:58:09,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:58:09,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:58:09,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 15:58:09,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 15:58:09,442 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:58:09,444 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:58:16,241 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:58:16,245 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:58:16,245 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 15:58:16,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:58:16 BoogieIcfgContainer [2021-12-14 15:58:16,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:58:16,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:58:16,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:58:16,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:58:16,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:58:08" (1/3) ... [2021-12-14 15:58:16,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559dd888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:58:16, skipping insertion in model container [2021-12-14 15:58:16,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:58:09" (2/3) ... [2021-12-14 15:58:16,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559dd888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:58:16, skipping insertion in model container [2021-12-14 15:58:16,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:58:16" (3/3) ... [2021-12-14 15:58:16,268 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_7.i [2021-12-14 15:58:16,271 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:58:16,272 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:58:16,300 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:58:16,311 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 [2021-12-14 15:58:16,312 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:58:16,351 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) [2021-12-14 15:58:16,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-14 15:58:16,355 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:58:16,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:58:16,356 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:58:16,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:58:16,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2021-12-14 15:58:16,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 15:58:16,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205474545] [2021-12-14 15:58:16,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:58:16,370 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 15:58:16,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 15:58:16,372 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 15:58:16,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-14 15:58:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:58:17,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 15:58:17,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 15:58:17,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:58:17,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 15:58:17,351 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 15:58:17,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205474545] [2021-12-14 15:58:17,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205474545] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:58:17,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:58:17,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 15:58:17,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573583168] [2021-12-14 15:58:17,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:58:17,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 15:58:17,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 15:58:17,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 15:58:17,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 15:58:17,384 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) [2021-12-14 15:58:17,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:58:17,397 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2021-12-14 15:58:17,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 15:58:17,399 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-14 15:58:17,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:58:17,403 INFO L225 Difference]: With dead ends: 57 [2021-12-14 15:58:17,403 INFO L226 Difference]: Without dead ends: 26 [2021-12-14 15:58:17,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 15:58:17,408 INFO L933 BasicCegarLoop]: 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 [2021-12-14 15:58:17,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:58:17,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-14 15:58:17,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-14 15:58:17,428 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) [2021-12-14 15:58:17,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-12-14 15:58:17,430 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2021-12-14 15:58:17,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:58:17,430 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-12-14 15:58:17,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:58:17,431 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-12-14 15:58:17,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-14 15:58:17,431 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:58:17,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:58:17,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-14 15:58:17,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 15:58:17,636 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:58:17,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:58:17,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2021-12-14 15:58:17,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 15:58:17,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034635567] [2021-12-14 15:58:17,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:58:17,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 15:58:17,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 15:58:17,645 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 15:58:17,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-14 15:58:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 15:58:47,282 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 15:58:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 15:58:57,180 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-14 15:58:57,180 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 15:58:57,181 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-14 15:58:57,183 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-14 15:58:57,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-14 15:58:57,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 15:58:57,386 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-14 15:58:57,398 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 15:58:57,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:58:57 BoogieIcfgContainer [2021-12-14 15:58:57,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 15:58:57,421 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 15:58:57,421 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 15:58:57,421 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 15:58:57,421 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:58:16" (3/4) ... [2021-12-14 15:58:57,423 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-14 15:58:57,446 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 15:58:57,446 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 15:58:57,447 INFO L158 Benchmark]: Toolchain (without parser) took 48483.95ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 41.2MB in the beginning and 60.5MB in the end (delta: -19.3MB). Peak memory consumption was 922.8kB. Max. memory is 16.1GB. [2021-12-14 15:58:57,447 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory was 41.7MB in the beginning and 41.7MB in the end (delta: 48.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 15:58:57,447 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.17ms. Allocated memory is still 60.8MB. Free memory was 41.1MB in the beginning and 42.3MB in the end (delta: -1.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 15:58:57,448 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.48ms. Allocated memory is still 60.8MB. Free memory was 42.3MB in the beginning and 40.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 15:58:57,448 INFO L158 Benchmark]: Boogie Preprocessor took 44.13ms. Allocated memory is still 60.8MB. Free memory was 40.4MB in the beginning and 39.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 15:58:57,448 INFO L158 Benchmark]: RCFGBuilder took 6965.33ms. Allocated memory is still 60.8MB. Free memory was 39.0MB in the beginning and 28.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 15:58:57,449 INFO L158 Benchmark]: TraceAbstraction took 41164.76ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 28.1MB in the beginning and 62.4MB in the end (delta: -34.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-14 15:58:57,449 INFO L158 Benchmark]: Witness Printer took 25.51ms. Allocated memory is still 81.8MB. Free memory was 62.4MB in the beginning and 60.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 15:58:57,451 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory was 41.7MB in the beginning and 41.7MB in the end (delta: 48.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.17ms. Allocated memory is still 60.8MB. Free memory was 41.1MB in the beginning and 42.3MB in the end (delta: -1.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.48ms. Allocated memory is still 60.8MB. Free memory was 42.3MB in the beginning and 40.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.13ms. Allocated memory is still 60.8MB. Free memory was 40.4MB in the beginning and 39.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 6965.33ms. Allocated memory is still 60.8MB. Free memory was 39.0MB in the beginning and 28.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 41164.76ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 28.1MB in the beginning and 62.4MB in the end (delta: -34.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Witness Printer took 25.51ms. Allocated memory is still 81.8MB. Free memory was 62.4MB in the beginning and 60.5MB in the end (delta: 2.0MB). 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 > -1.4f && IN < 1.4f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [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)=-0.9931156039237976, \result=-0.8381069302558899, x=-0.9931156039237976] [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)=-0.9931156039237976, \result=0.5487242937088013, x=-0.9931156039237976] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=-0.9931156039237976, x=0.5342578291893005] [L109] reach_error() VAL [IN=-0.9931156039237976, x=0.5342578291893005] - 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: 41.1s, 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, 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, 30.4s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-14 15:58:57,581 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