./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_1+newton_1_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_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 7f72f5580e8ee240383987c5e02610bf09387ce8fa780da3ef6f20ea144f2408 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 02:04:11,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 02:04:11,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 02:04:11,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 02:04:11,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 02:04:11,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 02:04:11,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 02:04:11,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 02:04:11,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 02:04:11,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 02:04:11,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 02:04:11,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 02:04:11,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 02:04:11,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 02:04:11,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 02:04:11,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 02:04:11,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 02:04:11,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 02:04:11,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 02:04:11,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 02:04:11,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 02:04:11,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 02:04:11,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 02:04:11,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 02:04:11,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 02:04:11,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 02:04:11,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 02:04:11,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 02:04:11,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 02:04:11,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 02:04:11,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 02:04:11,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 02:04:11,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 02:04:11,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 02:04:11,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 02:04:11,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 02:04:11,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 02:04:11,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 02:04:11,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 02:04:11,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 02:04:11,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 02:04:11,852 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 02:04:11,892 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 02:04:11,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 02:04:11,893 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 02:04:11,893 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 02:04:11,894 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 02:04:11,894 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 02:04:11,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 02:04:11,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 02:04:11,896 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 02:04:11,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 02:04:11,896 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 02:04:11,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 02:04:11,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 02:04:11,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 02:04:11,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 02:04:11,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 02:04:11,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 02:04:11,898 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 02:04:11,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 02:04:11,898 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 02:04:11,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 02:04:11,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 02:04:11,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 02:04:11,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 02:04:11,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:04:11,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 02:04:11,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 02:04:11,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 02:04:11,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 02:04:11,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 02:04:11,900 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 02:04:11,900 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 02:04:11,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 02:04:11,901 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f72f5580e8ee240383987c5e02610bf09387ce8fa780da3ef6f20ea144f2408 [2021-12-28 02:04:12,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 02:04:12,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 02:04:12,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 02:04:12,206 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 02:04:12,207 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 02:04:12,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_1+newton_1_7.i [2021-12-28 02:04:12,260 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f26e92f2/8b12c66f7bf149629a072674c17d532b/FLAGf340cefb9 [2021-12-28 02:04:12,681 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 02:04:12,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_7.i [2021-12-28 02:04:12,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f26e92f2/8b12c66f7bf149629a072674c17d532b/FLAGf340cefb9 [2021-12-28 02:04:12,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f26e92f2/8b12c66f7bf149629a072674c17d532b [2021-12-28 02:04:12,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 02:04:12,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 02:04:12,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 02:04:12,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 02:04:12,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 02:04:12,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:04:12" (1/1) ... [2021-12-28 02:04:12,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@202a78f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:12, skipping insertion in model container [2021-12-28 02:04:12,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:04:12" (1/1) ... [2021-12-28 02:04:12,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 02:04:12,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 02:04:12,887 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_7.i[1226,1239] [2021-12-28 02:04:12,929 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_7.i[2786,2799] [2021-12-28 02:04:12,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:04:12,946 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 02:04:12,977 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_7.i[1226,1239] [2021-12-28 02:04:12,985 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_7.i[2786,2799] [2021-12-28 02:04:12,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:04:13,012 INFO L208 MainTranslator]: Completed translation [2021-12-28 02:04:13,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:13 WrapperNode [2021-12-28 02:04:13,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 02:04:13,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 02:04:13,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 02:04:13,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 02:04:13,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:13" (1/1) ... [2021-12-28 02:04:13,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:13" (1/1) ... [2021-12-28 02:04:13,060 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-12-28 02:04:13,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 02:04:13,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 02:04:13,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 02:04:13,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 02:04:13,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:13" (1/1) ... [2021-12-28 02:04:13,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:13" (1/1) ... [2021-12-28 02:04:13,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:13" (1/1) ... [2021-12-28 02:04:13,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:13" (1/1) ... [2021-12-28 02:04:13,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:13" (1/1) ... [2021-12-28 02:04:13,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:13" (1/1) ... [2021-12-28 02:04:13,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:13" (1/1) ... [2021-12-28 02:04:13,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 02:04:13,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 02:04:13,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 02:04:13,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 02:04:13,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:13" (1/1) ... [2021-12-28 02:04:13,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:04:13,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:04:13,136 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) [2021-12-28 02:04:13,159 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 [2021-12-28 02:04:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 02:04:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 02:04:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 02:04:13,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 02:04:13,242 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 02:04:13,244 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 02:04:13,384 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 02:04:13,389 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 02:04:13,389 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 02:04:13,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:04:13 BoogieIcfgContainer [2021-12-28 02:04:13,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 02:04:13,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 02:04:13,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 02:04:13,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 02:04:13,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 02:04:12" (1/3) ... [2021-12-28 02:04:13,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b480873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:04:13, skipping insertion in model container [2021-12-28 02:04:13,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:13" (2/3) ... [2021-12-28 02:04:13,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b480873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:04:13, skipping insertion in model container [2021-12-28 02:04:13,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:04:13" (3/3) ... [2021-12-28 02:04:13,403 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_7.i [2021-12-28 02:04:13,408 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 02:04:13,409 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 02:04:13,447 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 02:04:13,453 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 [2021-12-28 02:04:13,453 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 02:04:13,464 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) [2021-12-28 02:04:13,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-28 02:04:13,469 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:04:13,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:04:13,470 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:04:13,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:04:13,475 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-28 02:04:13,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:04:13,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431835110] [2021-12-28 02:04:13,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:04:13,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:04:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:04:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:04:13,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:04:13,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431835110] [2021-12-28 02:04:13,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431835110] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:04:13,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:04:13,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 02:04:13,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222793374] [2021-12-28 02:04:13,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:04:13,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 02:04:13,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:04:13,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 02:04:13,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 02:04:13,686 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) [2021-12-28 02:04:13,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:04:13,711 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-12-28 02:04:13,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 02:04:13,714 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 [2021-12-28 02:04:13,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:04:13,720 INFO L225 Difference]: With dead ends: 46 [2021-12-28 02:04:13,728 INFO L226 Difference]: Without dead ends: 19 [2021-12-28 02:04:13,731 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 [2021-12-28 02:04:13,734 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 [2021-12-28 02:04:13,740 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] [2021-12-28 02:04:13,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-28 02:04:13,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-28 02:04:13,772 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) [2021-12-28 02:04:13,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-28 02:04:13,775 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-28 02:04:13,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:04:13,775 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-28 02:04:13,776 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) [2021-12-28 02:04:13,776 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-28 02:04:13,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-28 02:04:13,777 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:04:13,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:04:13,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 02:04:13,778 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:04:13,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:04:13,780 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-28 02:04:13,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:04:13,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187101933] [2021-12-28 02:04:13,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:04:13,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:04:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 02:04:13,821 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 02:04:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 02:04:13,866 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 02:04:13,866 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-28 02:04:13,868 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-28 02:04:13,869 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-28 02:04:13,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 02:04:13,875 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-28 02:04:13,877 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-28 02:04:13,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 02:04:13 BoogieIcfgContainer [2021-12-28 02:04:13,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-28 02:04:13,906 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 02:04:13,906 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 02:04:13,907 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 02:04:13,907 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:04:13" (3/4) ... [2021-12-28 02:04:13,909 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-28 02:04:13,909 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 02:04:13,911 INFO L158 Benchmark]: Toolchain (without parser) took 1201.93ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 38.0MB in the beginning and 49.9MB in the end (delta: -11.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 02:04:13,912 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory was 41.0MB in the beginning and 40.9MB in the end (delta: 47.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 02:04:13,914 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.62ms. Allocated memory is still 58.7MB. Free memory was 37.8MB in the beginning and 41.4MB in the end (delta: -3.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-28 02:04:13,915 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.96ms. Allocated memory is still 58.7MB. Free memory was 41.3MB in the beginning and 39.4MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 02:04:13,917 INFO L158 Benchmark]: Boogie Preprocessor took 38.88ms. Allocated memory is still 58.7MB. Free memory was 39.4MB in the beginning and 38.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 02:04:13,918 INFO L158 Benchmark]: RCFGBuilder took 288.86ms. Allocated memory is still 58.7MB. Free memory was 38.2MB in the beginning and 27.6MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-28 02:04:13,918 INFO L158 Benchmark]: TraceAbstraction took 513.78ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 27.1MB in the beginning and 50.2MB in the end (delta: -23.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 02:04:13,918 INFO L158 Benchmark]: Witness Printer took 3.27ms. Allocated memory is still 71.3MB. Free memory is still 49.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 02:04:13,923 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 58.7MB. Free memory was 41.0MB in the beginning and 40.9MB in the end (delta: 47.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.62ms. Allocated memory is still 58.7MB. Free memory was 37.8MB in the beginning and 41.4MB in the end (delta: -3.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.96ms. Allocated memory is still 58.7MB. Free memory was 41.3MB in the beginning and 39.4MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.88ms. Allocated memory is still 58.7MB. Free memory was 39.4MB in the beginning and 38.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 288.86ms. Allocated memory is still 58.7MB. Free memory was 38.2MB in the beginning and 27.6MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 513.78ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 27.1MB in the beginning and 50.2MB in the end (delta: -23.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.27ms. Allocated memory is still 71.3MB. Free memory is still 49.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 102]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 93. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [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: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s 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 [2021-12-28 02:04:13,966 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_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 7f72f5580e8ee240383987c5e02610bf09387ce8fa780da3ef6f20ea144f2408 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 02:04:15,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 02:04:15,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 02:04:15,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 02:04:15,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 02:04:15,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 02:04:15,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 02:04:15,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 02:04:15,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 02:04:15,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 02:04:15,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 02:04:15,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 02:04:15,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 02:04:15,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 02:04:15,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 02:04:15,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 02:04:15,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 02:04:15,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 02:04:15,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 02:04:15,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 02:04:15,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 02:04:15,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 02:04:15,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 02:04:15,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 02:04:15,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 02:04:15,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 02:04:15,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 02:04:15,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 02:04:15,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 02:04:15,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 02:04:15,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 02:04:15,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 02:04:15,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 02:04:15,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 02:04:15,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 02:04:15,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 02:04:15,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 02:04:15,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 02:04:15,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 02:04:15,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 02:04:15,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 02:04:15,827 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-28 02:04:15,854 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 02:04:15,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 02:04:15,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 02:04:15,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 02:04:15,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 02:04:15,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 02:04:15,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 02:04:15,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 02:04:15,856 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 02:04:15,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 02:04:15,857 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 02:04:15,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 02:04:15,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 02:04:15,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 02:04:15,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 02:04:15,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 02:04:15,858 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-28 02:04:15,858 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-28 02:04:15,858 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-28 02:04:15,858 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 02:04:15,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 02:04:15,859 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 02:04:15,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 02:04:15,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 02:04:15,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 02:04:15,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 02:04:15,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:04:15,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 02:04:15,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 02:04:15,860 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 02:04:15,860 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-28 02:04:15,861 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-28 02:04:15,861 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 02:04:15,861 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 02:04:15,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 02:04:15,861 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-28 02:04:15,861 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f72f5580e8ee240383987c5e02610bf09387ce8fa780da3ef6f20ea144f2408 [2021-12-28 02:04:16,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 02:04:16,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 02:04:16,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 02:04:16,173 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 02:04:16,173 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 02:04:16,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_1+newton_1_7.i [2021-12-28 02:04:16,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3caa8816e/df2c2bcfc9f84dceb3b49503b2dc9b33/FLAG5044f7946 [2021-12-28 02:04:16,596 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 02:04:16,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_7.i [2021-12-28 02:04:16,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3caa8816e/df2c2bcfc9f84dceb3b49503b2dc9b33/FLAG5044f7946 [2021-12-28 02:04:16,614 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3caa8816e/df2c2bcfc9f84dceb3b49503b2dc9b33 [2021-12-28 02:04:16,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 02:04:16,617 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 02:04:16,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 02:04:16,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 02:04:16,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 02:04:16,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:04:16" (1/1) ... [2021-12-28 02:04:16,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a409934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:16, skipping insertion in model container [2021-12-28 02:04:16,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:04:16" (1/1) ... [2021-12-28 02:04:16,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 02:04:16,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 02:04:16,816 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_7.i[1226,1239] [2021-12-28 02:04:16,854 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_7.i[2786,2799] [2021-12-28 02:04:16,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:04:16,871 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 02:04:16,930 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_7.i[1226,1239] [2021-12-28 02:04:16,947 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_7.i[2786,2799] [2021-12-28 02:04:16,953 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:04:16,967 INFO L208 MainTranslator]: Completed translation [2021-12-28 02:04:16,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:16 WrapperNode [2021-12-28 02:04:16,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 02:04:16,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 02:04:16,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 02:04:16,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 02:04:16,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:16" (1/1) ... [2021-12-28 02:04:16,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:16" (1/1) ... [2021-12-28 02:04:17,020 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-12-28 02:04:17,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 02:04:17,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 02:04:17,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 02:04:17,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 02:04:17,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:16" (1/1) ... [2021-12-28 02:04:17,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:16" (1/1) ... [2021-12-28 02:04:17,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:16" (1/1) ... [2021-12-28 02:04:17,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:16" (1/1) ... [2021-12-28 02:04:17,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:16" (1/1) ... [2021-12-28 02:04:17,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:16" (1/1) ... [2021-12-28 02:04:17,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:16" (1/1) ... [2021-12-28 02:04:17,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 02:04:17,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 02:04:17,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 02:04:17,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 02:04:17,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:16" (1/1) ... [2021-12-28 02:04:17,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:04:17,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:04:17,104 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) [2021-12-28 02:04:17,131 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 [2021-12-28 02:04:17,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 02:04:17,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-28 02:04:17,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 02:04:17,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 02:04:17,214 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 02:04:17,216 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 02:04:23,464 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 02:04:23,468 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 02:04:23,468 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 02:04:23,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:04:23 BoogieIcfgContainer [2021-12-28 02:04:23,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 02:04:23,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 02:04:23,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 02:04:23,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 02:04:23,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 02:04:16" (1/3) ... [2021-12-28 02:04:23,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77933861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:04:23, skipping insertion in model container [2021-12-28 02:04:23,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:04:16" (2/3) ... [2021-12-28 02:04:23,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77933861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:04:23, skipping insertion in model container [2021-12-28 02:04:23,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:04:23" (3/3) ... [2021-12-28 02:04:23,476 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_7.i [2021-12-28 02:04:23,480 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 02:04:23,480 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 02:04:23,524 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 02:04:23,530 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 [2021-12-28 02:04:23,530 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 02:04:23,544 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) [2021-12-28 02:04:23,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-28 02:04:23,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:04:23,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:04:23,557 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:04:23,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:04:23,561 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-28 02:04:23,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 02:04:23,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545075832] [2021-12-28 02:04:23,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:04:23,572 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 02:04:23,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 02:04:23,574 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) [2021-12-28 02:04:23,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-28 02:04:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:04:24,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-28 02:04:24,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 02:04:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:04:24,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 02:04:24,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 02:04:24,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545075832] [2021-12-28 02:04:24,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545075832] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:04:24,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:04:24,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 02:04:24,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293599725] [2021-12-28 02:04:24,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:04:24,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 02:04:24,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 02:04:24,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 02:04:24,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 02:04:24,542 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) [2021-12-28 02:04:24,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:04:24,554 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-12-28 02:04:24,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 02:04:24,556 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 [2021-12-28 02:04:24,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:04:24,561 INFO L225 Difference]: With dead ends: 46 [2021-12-28 02:04:24,561 INFO L226 Difference]: Without dead ends: 19 [2021-12-28 02:04:24,563 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 [2021-12-28 02:04:24,566 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 [2021-12-28 02:04:24,567 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] [2021-12-28 02:04:24,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-28 02:04:24,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-28 02:04:24,585 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) [2021-12-28 02:04:24,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-28 02:04:24,587 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-28 02:04:24,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:04:24,587 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-28 02:04:24,587 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) [2021-12-28 02:04:24,588 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-28 02:04:24,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-28 02:04:24,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:04:24,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:04:24,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-28 02:04:24,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 02:04:24,789 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:04:24,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:04:24,790 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-28 02:04:24,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 02:04:24,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511215738] [2021-12-28 02:04:24,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:04:24,791 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 02:04:24,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 02:04:24,793 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) [2021-12-28 02:04:24,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process