./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_1+newton_1_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_1+newton_1_2.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 f2d1b02369a1f0b5046b14bc967075017a0d2438bdce8876a41d0f5cadb3a872 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:44:25,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:44:25,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:44:25,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:44:25,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:44:25,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:44:25,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:44:25,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:44:25,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:44:25,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:44:25,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:44:25,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:44:25,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:44:25,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:44:25,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:44:25,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:44:25,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:44:25,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:44:25,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:44:25,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:44:25,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:44:25,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:44:25,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:44:25,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:44:25,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:44:25,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:44:25,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:44:25,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:44:25,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:44:25,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:44:25,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:44:25,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:44:25,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:44:25,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:44:25,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:44:25,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:44:25,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:44:25,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:44:25,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:44:25,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:44:25,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:44:25,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:44:25,893 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:44:25,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:44:25,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:44:25,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:44:25,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:44:25,897 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:44:25,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:44:25,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:44:25,898 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:44:25,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:44:25,899 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:44:25,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:44:25,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:44:25,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:44:25,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:44:25,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:44:25,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:44:25,900 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:44:25,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:44:25,900 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:44:25,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:44:25,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:44:25,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:44:25,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:44:25,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:44:25,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:44:25,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:44:25,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:44:25,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:44:25,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:44:25,902 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:44:25,902 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:44:25,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:44:25,902 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:44:25,903 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2d1b02369a1f0b5046b14bc967075017a0d2438bdce8876a41d0f5cadb3a872 [2021-12-22 12:44:26,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:44:26,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:44:26,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:44:26,094 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:44:26,095 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:44:26,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_1+newton_1_2.i [2021-12-22 12:44:26,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a425eaa/ff213a2e64c14b22b3433b7cdb6511a9/FLAGb15c5a30c [2021-12-22 12:44:26,500 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:44:26,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_2.i [2021-12-22 12:44:26,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a425eaa/ff213a2e64c14b22b3433b7cdb6511a9/FLAGb15c5a30c [2021-12-22 12:44:26,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a425eaa/ff213a2e64c14b22b3433b7cdb6511a9 [2021-12-22 12:44:26,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:44:26,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:44:26,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:44:26,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:44:26,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:44:26,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:44:26" (1/1) ... [2021-12-22 12:44:26,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a8c0152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:26, skipping insertion in model container [2021-12-22 12:44:26,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:44:26" (1/1) ... [2021-12-22 12:44:26,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:44:26,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:44:26,655 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_2.i[1226,1239] [2021-12-22 12:44:26,671 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_2.i[2786,2799] [2021-12-22 12:44:26,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:44:26,677 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:44:26,684 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_2.i[1226,1239] [2021-12-22 12:44:26,694 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_2.i[2786,2799] [2021-12-22 12:44:26,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:44:26,707 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:44:26,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:26 WrapperNode [2021-12-22 12:44:26,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:44:26,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:44:26,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:44:26,708 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:44:26,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:26" (1/1) ... [2021-12-22 12:44:26,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:26" (1/1) ... [2021-12-22 12:44:26,741 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-12-22 12:44:26,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:44:26,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:44:26,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:44:26,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:44:26,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:26" (1/1) ... [2021-12-22 12:44:26,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:26" (1/1) ... [2021-12-22 12:44:26,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:26" (1/1) ... [2021-12-22 12:44:26,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:26" (1/1) ... [2021-12-22 12:44:26,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:26" (1/1) ... [2021-12-22 12:44:26,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:26" (1/1) ... [2021-12-22 12:44:26,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:26" (1/1) ... [2021-12-22 12:44:26,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:44:26,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:44:26,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:44:26,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:44:26,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:26" (1/1) ... [2021-12-22 12:44:26,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:44:26,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:44:26,795 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) [2021-12-22 12:44:26,798 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 [2021-12-22 12:44:26,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:44:26,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:44:26,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:44:26,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:44:26,863 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:44:26,864 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:44:26,969 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:44:26,973 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:44:26,974 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 12:44:26,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:44:26 BoogieIcfgContainer [2021-12-22 12:44:26,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:44:26,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:44:26,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:44:26,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:44:26,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:44:26" (1/3) ... [2021-12-22 12:44:26,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a619e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:44:26, skipping insertion in model container [2021-12-22 12:44:26,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:26" (2/3) ... [2021-12-22 12:44:26,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a619e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:44:26, skipping insertion in model container [2021-12-22 12:44:26,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:44:26" (3/3) ... [2021-12-22 12:44:26,983 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_2.i [2021-12-22 12:44:26,986 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:44:26,986 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 12:44:27,042 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:44:27,046 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 [2021-12-22 12:44:27,050 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 12:44:27,061 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:44:27,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 12:44:27,073 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:27,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:27,074 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:27,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:27,081 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-22 12:44:27,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:44:27,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097101362] [2021-12-22 12:44:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:27,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:44:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:27,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:27,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:44:27,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097101362] [2021-12-22 12:44:27,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097101362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:27,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:27,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 12:44:27,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681597208] [2021-12-22 12:44:27,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:27,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 12:44:27,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:44:27,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 12:44:27,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 12:44:27,243 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:44:27,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:44:27,257 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-12-22 12:44:27,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 12:44:27,260 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 [2021-12-22 12:44:27,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:44:27,266 INFO L225 Difference]: With dead ends: 46 [2021-12-22 12:44:27,266 INFO L226 Difference]: Without dead ends: 19 [2021-12-22 12:44:27,269 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 [2021-12-22 12:44:27,276 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:44:27,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:44:27,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-22 12:44:27,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-22 12:44:27,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:44:27,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-22 12:44:27,302 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-22 12:44:27,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:44:27,303 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-22 12:44:27,303 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) [2021-12-22 12:44:27,303 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-22 12:44:27,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 12:44:27,304 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:27,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:27,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:44:27,305 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:27,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:27,307 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-22 12:44:27,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:44:27,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679629240] [2021-12-22 12:44:27,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:27,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:44:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 12:44:27,339 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 12:44:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 12:44:27,367 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 12:44:27,367 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 12:44:27,368 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-22 12:44:27,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-22 12:44:27,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:44:27,372 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-22 12:44:27,374 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 12:44:27,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 12:44:27 BoogieIcfgContainer [2021-12-22 12:44:27,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 12:44:27,389 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 12:44:27,389 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 12:44:27,389 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 12:44:27,390 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:44:26" (3/4) ... [2021-12-22 12:44:27,392 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-22 12:44:27,392 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 12:44:27,392 INFO L158 Benchmark]: Toolchain (without parser) took 875.80ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 66.0MB in the beginning and 55.1MB in the end (delta: 10.8MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2021-12-22 12:44:27,393 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 53.1MB in the beginning and 53.0MB in the end (delta: 40.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 12:44:27,393 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.31ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 65.8MB in the beginning and 92.8MB in the end (delta: -27.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 12:44:27,394 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.26ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 90.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 12:44:27,394 INFO L158 Benchmark]: Boogie Preprocessor took 31.14ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 89.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 12:44:27,395 INFO L158 Benchmark]: RCFGBuilder took 201.52ms. Allocated memory is still 117.4MB. Free memory was 89.8MB in the beginning and 78.7MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-22 12:44:27,395 INFO L158 Benchmark]: TraceAbstraction took 412.43ms. Allocated memory is still 117.4MB. Free memory was 78.2MB in the beginning and 55.6MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-22 12:44:27,396 INFO L158 Benchmark]: Witness Printer took 2.90ms. Allocated memory is still 117.4MB. Free memory was 55.6MB in the beginning and 55.1MB in the end (delta: 490.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 12:44:27,398 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 53.1MB in the beginning and 53.0MB in the end (delta: 40.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 186.31ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 65.8MB in the beginning and 92.8MB in the end (delta: -27.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.26ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 90.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.14ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 89.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 201.52ms. Allocated memory is still 117.4MB. Free memory was 89.8MB in the beginning and 78.7MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 412.43ms. Allocated memory is still 117.4MB. Free memory was 78.2MB in the beginning and 55.6MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 2.90ms. Allocated memory is still 117.4MB. Free memory was 55.6MB in the beginning and 55.1MB in the end (delta: 490.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 102]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 93. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=49] [L102] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-22 12:44:27,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_1+newton_1_2.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 f2d1b02369a1f0b5046b14bc967075017a0d2438bdce8876a41d0f5cadb3a872 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:44:29,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:44:29,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:44:29,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:44:29,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:44:29,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:44:29,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:44:29,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:44:29,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:44:29,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:44:29,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:44:29,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:44:29,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:44:29,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:44:29,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:44:29,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:44:29,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:44:29,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:44:29,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:44:29,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:44:29,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:44:29,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:44:29,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:44:29,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:44:29,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:44:29,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:44:29,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:44:29,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:44:29,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:44:29,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:44:29,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:44:29,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:44:29,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:44:29,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:44:29,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:44:29,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:44:29,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:44:29,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:44:29,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:44:29,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:44:29,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:44:29,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-22 12:44:29,183 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:44:29,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:44:29,184 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:44:29,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:44:29,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:44:29,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:44:29,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:44:29,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:44:29,186 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:44:29,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:44:29,187 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:44:29,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:44:29,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:44:29,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:44:29,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:44:29,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:44:29,188 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 12:44:29,188 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 12:44:29,188 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 12:44:29,189 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:44:29,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:44:29,189 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:44:29,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:44:29,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:44:29,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:44:29,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:44:29,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:44:29,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:44:29,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:44:29,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:44:29,190 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 12:44:29,191 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 12:44:29,191 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:44:29,191 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:44:29,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:44:29,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:44:29,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 12:44:29,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2d1b02369a1f0b5046b14bc967075017a0d2438bdce8876a41d0f5cadb3a872 [2021-12-22 12:44:29,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:44:29,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:44:29,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:44:29,435 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:44:29,437 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:44:29,438 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_1+newton_1_2.i [2021-12-22 12:44:29,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d9a1c539/f359ac8404724364877375aad8d41ef6/FLAG2115419eb [2021-12-22 12:44:29,815 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:44:29,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_2.i [2021-12-22 12:44:29,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d9a1c539/f359ac8404724364877375aad8d41ef6/FLAG2115419eb [2021-12-22 12:44:30,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d9a1c539/f359ac8404724364877375aad8d41ef6 [2021-12-22 12:44:30,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:44:30,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:44:30,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:44:30,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:44:30,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:44:30,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:44:30" (1/1) ... [2021-12-22 12:44:30,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@101f7743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:30, skipping insertion in model container [2021-12-22 12:44:30,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:44:30" (1/1) ... [2021-12-22 12:44:30,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:44:30,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:44:30,374 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_2.i[1226,1239] [2021-12-22 12:44:30,395 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_2.i[2786,2799] [2021-12-22 12:44:30,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:44:30,406 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:44:30,414 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_2.i[1226,1239] [2021-12-22 12:44:30,426 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_2.i[2786,2799] [2021-12-22 12:44:30,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:44:30,436 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:44:30,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:30 WrapperNode [2021-12-22 12:44:30,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:44:30,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:44:30,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:44:30,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:44:30,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:30" (1/1) ... [2021-12-22 12:44:30,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:30" (1/1) ... [2021-12-22 12:44:30,485 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-12-22 12:44:30,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:44:30,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:44:30,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:44:30,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:44:30,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:30" (1/1) ... [2021-12-22 12:44:30,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:30" (1/1) ... [2021-12-22 12:44:30,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:30" (1/1) ... [2021-12-22 12:44:30,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:30" (1/1) ... [2021-12-22 12:44:30,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:30" (1/1) ... [2021-12-22 12:44:30,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:30" (1/1) ... [2021-12-22 12:44:30,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:30" (1/1) ... [2021-12-22 12:44:30,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:44:30,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:44:30,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:44:30,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:44:30,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:30" (1/1) ... [2021-12-22 12:44:30,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:44:30,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:44:30,551 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) [2021-12-22 12:44:30,559 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 [2021-12-22 12:44:30,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:44:30,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-22 12:44:30,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:44:30,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:44:30,634 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:44:30,635 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:44:36,753 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:44:36,757 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:44:36,757 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 12:44:36,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:44:36 BoogieIcfgContainer [2021-12-22 12:44:36,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:44:36,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:44:36,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:44:36,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:44:36,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:44:30" (1/3) ... [2021-12-22 12:44:36,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4315d4b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:44:36, skipping insertion in model container [2021-12-22 12:44:36,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:30" (2/3) ... [2021-12-22 12:44:36,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4315d4b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:44:36, skipping insertion in model container [2021-12-22 12:44:36,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:44:36" (3/3) ... [2021-12-22 12:44:36,764 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_2.i [2021-12-22 12:44:36,767 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:44:36,767 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 12:44:36,798 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:44:36,805 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 [2021-12-22 12:44:36,805 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 12:44:36,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:44:36,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 12:44:36,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:36,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:36,822 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:36,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:36,825 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-22 12:44:36,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 12:44:36,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281280812] [2021-12-22 12:44:36,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:36,832 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 12:44:36,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 12:44:36,833 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) [2021-12-22 12:44:36,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-22 12:44:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:37,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 12:44:37,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 12:44:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:37,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 12:44:37,741 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 12:44:37,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281280812] [2021-12-22 12:44:37,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281280812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:37,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:37,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 12:44:37,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209829196] [2021-12-22 12:44:37,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:37,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 12:44:37,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 12:44:37,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 12:44:37,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 12:44:37,762 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:44:37,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:44:37,771 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-12-22 12:44:37,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 12:44:37,772 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 [2021-12-22 12:44:37,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:44:37,776 INFO L225 Difference]: With dead ends: 46 [2021-12-22 12:44:37,777 INFO L226 Difference]: Without dead ends: 19 [2021-12-22 12:44:37,778 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 [2021-12-22 12:44:37,780 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:44:37,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:44:37,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-22 12:44:37,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-22 12:44:37,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:44:37,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-22 12:44:37,799 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-22 12:44:37,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:44:37,799 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-22 12:44:37,799 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) [2021-12-22 12:44:37,799 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-22 12:44:37,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 12:44:37,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:37,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:37,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-22 12:44:38,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 12:44:38,016 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:38,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:38,016 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-22 12:44:38,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 12:44:38,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657809613] [2021-12-22 12:44:38,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:38,017 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 12:44:38,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 12:44:38,018 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) [2021-12-22 12:44:38,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process