./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_1+newton_1_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_3.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 10b9103f92ac8753860b3b630670be102e95d8a13496ab2027773256e0097c4f --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:30:07,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:30:07,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:30:07,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:30:07,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:30:07,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:30:07,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:30:07,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:30:07,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:30:07,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:30:07,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:30:07,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:30:07,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:30:07,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:30:07,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:30:07,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:30:07,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:30:07,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:30:07,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:30:07,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:30:07,765 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:30:07,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:30:07,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:30:07,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:30:07,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:30:07,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:30:07,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:30:07,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:30:07,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:30:07,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:30:07,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:30:07,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:30:07,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:30:07,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:30:07,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:30:07,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:30:07,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:30:07,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:30:07,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:30:07,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:30:07,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:30:07,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:30:07,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 08:30:07,813 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:30:07,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:30:07,814 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:30:07,815 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:30:07,815 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:30:07,816 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:30:07,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:30:07,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:30:07,816 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:30:07,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:30:07,818 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:30:07,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 08:30:07,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:30:07,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:30:07,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:30:07,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:30:07,819 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:30:07,819 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:30:07,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:30:07,819 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:30:07,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:30:07,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:30:07,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:30:07,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:30:07,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:30:07,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:30:07,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:30:07,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:30:07,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 08:30:07,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 08:30:07,822 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:30:07,822 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:30:07,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:30:07,823 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10b9103f92ac8753860b3b630670be102e95d8a13496ab2027773256e0097c4f [2022-07-12 08:30:08,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:30:08,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:30:08,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:30:08,119 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:30:08,119 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:30:08,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_1+newton_1_3.i [2022-07-12 08:30:08,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/408d2e15f/7bde05fb02b94116849876f95475d816/FLAGc3a8ae715 [2022-07-12 08:30:08,596 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:30:08,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_3.i [2022-07-12 08:30:08,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/408d2e15f/7bde05fb02b94116849876f95475d816/FLAGc3a8ae715 [2022-07-12 08:30:08,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/408d2e15f/7bde05fb02b94116849876f95475d816 [2022-07-12 08:30:08,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:30:08,625 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:30:08,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:30:08,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:30:08,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:30:08,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:30:08" (1/1) ... [2022-07-12 08:30:08,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7c7d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:08, skipping insertion in model container [2022-07-12 08:30:08,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:30:08" (1/1) ... [2022-07-12 08:30:08,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:30:08,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:30:08,802 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_3.i[1226,1239] [2022-07-12 08:30:08,822 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_3.i[2786,2799] [2022-07-12 08:30:08,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:30:08,829 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:30:08,838 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_3.i[1226,1239] [2022-07-12 08:30:08,846 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_3.i[2786,2799] [2022-07-12 08:30:08,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:30:08,860 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:30:08,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:08 WrapperNode [2022-07-12 08:30:08,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:30:08,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:30:08,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:30:08,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:30:08,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:08" (1/1) ... [2022-07-12 08:30:08,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:08" (1/1) ... [2022-07-12 08:30:08,895 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2022-07-12 08:30:08,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:30:08,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:30:08,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:30:08,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:30:08,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:08" (1/1) ... [2022-07-12 08:30:08,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:08" (1/1) ... [2022-07-12 08:30:08,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:08" (1/1) ... [2022-07-12 08:30:08,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:08" (1/1) ... [2022-07-12 08:30:08,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:08" (1/1) ... [2022-07-12 08:30:08,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:08" (1/1) ... [2022-07-12 08:30:08,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:08" (1/1) ... [2022-07-12 08:30:08,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:30:08,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:30:08,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:30:08,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:30:08,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:08" (1/1) ... [2022-07-12 08:30:08,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:30:08,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:30:08,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 08:30:08,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 08:30:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:30:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 08:30:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:30:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:30:09,038 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:30:09,040 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:30:09,192 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:30:09,212 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:30:09,213 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 08:30:09,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:30:09 BoogieIcfgContainer [2022-07-12 08:30:09,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:30:09,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:30:09,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:30:09,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:30:09,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:30:08" (1/3) ... [2022-07-12 08:30:09,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4a29c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:30:09, skipping insertion in model container [2022-07-12 08:30:09,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:08" (2/3) ... [2022-07-12 08:30:09,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4a29c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:30:09, skipping insertion in model container [2022-07-12 08:30:09,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:30:09" (3/3) ... [2022-07-12 08:30:09,238 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_3.i [2022-07-12 08:30:09,254 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:30:09,255 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:30:09,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:30:09,306 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@58dbeccb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6abb5bd5 [2022-07-12 08:30:09,306 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:30:09,310 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) [2022-07-12 08:30:09,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 08:30:09,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:30:09,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:30:09,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:30:09,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:30:09,324 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-07-12 08:30:09,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:30:09,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157820376] [2022-07-12 08:30:09,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:30:09,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:30:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:30:09,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:30:09,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:30:09,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157820376] [2022-07-12 08:30:09,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157820376] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:30:09,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:30:09,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 08:30:09,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955067354] [2022-07-12 08:30:09,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:30:09,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 08:30:09,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:30:09,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 08:30:09,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 08:30:09,482 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) [2022-07-12 08:30:09,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:30:09,501 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2022-07-12 08:30:09,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 08:30:09,503 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-12 08:30:09,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:30:09,511 INFO L225 Difference]: With dead ends: 46 [2022-07-12 08:30:09,511 INFO L226 Difference]: Without dead ends: 19 [2022-07-12 08:30:09,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 08:30:09,520 INFO L413 NwaCegarLoop]: 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 [2022-07-12 08:30:09,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:30:09,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-12 08:30:09,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-12 08:30:09,571 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) [2022-07-12 08:30:09,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-12 08:30:09,573 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-07-12 08:30:09,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:30:09,574 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-12 08:30:09,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 08:30:09,574 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-12 08:30:09,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 08:30:09,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:30:09,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:30:09,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 08:30:09,575 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:30:09,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:30:09,578 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-07-12 08:30:09,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:30:09,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853162043] [2022-07-12 08:30:09,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:30:09,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:30:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 08:30:09,598 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 08:30:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 08:30:09,640 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 08:30:09,640 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 08:30:09,648 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-12 08:30:09,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-12 08:30:09,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 08:30:09,657 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 08:30:09,663 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 08:30:09,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 08:30:09 BoogieIcfgContainer [2022-07-12 08:30:09,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 08:30:09,694 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 08:30:09,694 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 08:30:09,694 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 08:30:09,694 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:30:09" (3/4) ... [2022-07-12 08:30:09,697 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 08:30:09,697 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 08:30:09,699 INFO L158 Benchmark]: Toolchain (without parser) took 1072.61ms. Allocated memory was 86.0MB in the beginning and 123.7MB in the end (delta: 37.7MB). Free memory was 48.5MB in the beginning and 93.2MB in the end (delta: -44.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:30:09,700 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 86.0MB. Free memory was 65.1MB in the beginning and 65.0MB in the end (delta: 41.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:30:09,702 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.70ms. Allocated memory was 86.0MB in the beginning and 123.7MB in the end (delta: 37.7MB). Free memory was 48.3MB in the beginning and 98.0MB in the end (delta: -49.7MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2022-07-12 08:30:09,707 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.06ms. Allocated memory is still 123.7MB. Free memory was 98.0MB in the beginning and 96.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 08:30:09,710 INFO L158 Benchmark]: Boogie Preprocessor took 21.07ms. Allocated memory is still 123.7MB. Free memory was 96.2MB in the beginning and 94.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:30:09,711 INFO L158 Benchmark]: RCFGBuilder took 296.64ms. Allocated memory is still 123.7MB. Free memory was 94.8MB in the beginning and 84.1MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 08:30:09,711 INFO L158 Benchmark]: TraceAbstraction took 475.72ms. Allocated memory is still 123.7MB. Free memory was 83.3MB in the beginning and 93.2MB in the end (delta: -9.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:30:09,711 INFO L158 Benchmark]: Witness Printer took 3.59ms. Allocated memory is still 123.7MB. Free memory is still 93.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:30:09,715 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 86.0MB. Free memory was 65.1MB in the beginning and 65.0MB in the end (delta: 41.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 234.70ms. Allocated memory was 86.0MB in the beginning and 123.7MB in the end (delta: 37.7MB). Free memory was 48.3MB in the beginning and 98.0MB in the end (delta: -49.7MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.06ms. Allocated memory is still 123.7MB. Free memory was 98.0MB in the beginning and 96.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.07ms. Allocated memory is still 123.7MB. Free memory was 96.2MB in the beginning and 94.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 296.64ms. Allocated memory is still 123.7MB. Free memory was 94.8MB in the beginning and 84.1MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 475.72ms. Allocated memory is still 123.7MB. Free memory was 83.3MB in the beginning and 93.2MB in the end (delta: -9.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.59ms. Allocated memory is still 123.7MB. Free memory is still 93.2MB. 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 > -0.6f && IN < 0.6f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -0.6f && IN < 0.6f) [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, 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 [2022-07-12 08:30:09,752 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_3.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 10b9103f92ac8753860b3b630670be102e95d8a13496ab2027773256e0097c4f --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:30:11,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:30:11,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:30:11,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:30:11,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:30:11,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:30:11,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:30:11,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:30:11,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:30:11,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:30:11,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:30:11,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:30:11,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:30:11,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:30:11,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:30:11,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:30:11,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:30:11,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:30:11,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:30:11,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:30:11,881 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:30:11,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:30:11,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:30:11,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:30:11,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:30:11,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:30:11,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:30:11,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:30:11,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:30:11,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:30:11,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:30:11,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:30:11,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:30:11,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:30:11,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:30:11,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:30:11,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:30:11,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:30:11,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:30:11,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:30:11,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:30:11,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:30:11,904 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 08:30:11,939 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:30:11,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:30:11,940 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:30:11,940 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:30:11,941 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:30:11,941 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:30:11,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:30:11,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:30:11,942 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:30:11,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:30:11,943 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:30:11,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:30:11,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:30:11,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:30:11,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:30:11,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:30:11,952 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 08:30:11,952 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 08:30:11,952 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 08:30:11,952 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:30:11,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:30:11,953 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:30:11,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:30:11,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:30:11,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:30:11,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:30:11,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:30:11,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:30:11,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:30:11,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:30:11,955 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 08:30:11,955 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 08:30:11,955 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:30:11,955 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:30:11,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:30:11,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 08:30:11,956 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10b9103f92ac8753860b3b630670be102e95d8a13496ab2027773256e0097c4f [2022-07-12 08:30:12,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:30:12,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:30:12,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:30:12,295 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:30:12,295 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:30:12,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_1+newton_1_3.i [2022-07-12 08:30:12,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69754fdd8/9cfe6e64800b4c46a39844ecc9022ddb/FLAGf311a87f6 [2022-07-12 08:30:12,866 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:30:12,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_3.i [2022-07-12 08:30:12,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69754fdd8/9cfe6e64800b4c46a39844ecc9022ddb/FLAGf311a87f6 [2022-07-12 08:30:13,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69754fdd8/9cfe6e64800b4c46a39844ecc9022ddb [2022-07-12 08:30:13,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:30:13,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:30:13,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:30:13,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:30:13,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:30:13,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:30:13" (1/1) ... [2022-07-12 08:30:13,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5a39ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:13, skipping insertion in model container [2022-07-12 08:30:13,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:30:13" (1/1) ... [2022-07-12 08:30:13,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:30:13,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:30:13,403 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_3.i[1226,1239] [2022-07-12 08:30:13,439 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_3.i[2786,2799] [2022-07-12 08:30:13,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:30:13,467 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:30:13,486 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_3.i[1226,1239] [2022-07-12 08:30:13,511 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_3.i[2786,2799] [2022-07-12 08:30:13,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:30:13,539 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:30:13,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:13 WrapperNode [2022-07-12 08:30:13,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:30:13,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:30:13,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:30:13,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:30:13,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:13" (1/1) ... [2022-07-12 08:30:13,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:13" (1/1) ... [2022-07-12 08:30:13,596 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2022-07-12 08:30:13,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:30:13,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:30:13,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:30:13,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:30:13,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:13" (1/1) ... [2022-07-12 08:30:13,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:13" (1/1) ... [2022-07-12 08:30:13,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:13" (1/1) ... [2022-07-12 08:30:13,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:13" (1/1) ... [2022-07-12 08:30:13,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:13" (1/1) ... [2022-07-12 08:30:13,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:13" (1/1) ... [2022-07-12 08:30:13,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:13" (1/1) ... [2022-07-12 08:30:13,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:30:13,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:30:13,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:30:13,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:30:13,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:13" (1/1) ... [2022-07-12 08:30:13,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:30:13,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:30:13,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 08:30:13,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 08:30:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:30:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 08:30:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:30:13,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:30:13,780 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:30:13,782 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:30:20,288 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:30:20,294 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:30:20,295 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 08:30:20,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:30:20 BoogieIcfgContainer [2022-07-12 08:30:20,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:30:20,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:30:20,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:30:20,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:30:20,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:30:13" (1/3) ... [2022-07-12 08:30:20,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85878a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:30:20, skipping insertion in model container [2022-07-12 08:30:20,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:30:13" (2/3) ... [2022-07-12 08:30:20,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85878a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:30:20, skipping insertion in model container [2022-07-12 08:30:20,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:30:20" (3/3) ... [2022-07-12 08:30:20,306 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_3.i [2022-07-12 08:30:20,319 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:30:20,319 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:30:20,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:30:20,368 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4c6c0c5a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@15cf0b75 [2022-07-12 08:30:20,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:30:20,374 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) [2022-07-12 08:30:20,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 08:30:20,383 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:30:20,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:30:20,384 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:30:20,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:30:20,392 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-07-12 08:30:20,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 08:30:20,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608676774] [2022-07-12 08:30:20,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:30:20,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 08:30:20,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 08:30:20,408 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 08:30:20,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 08:30:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:30:21,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 08:30:21,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:30:21,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:30:21,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:30:21,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 08:30:21,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608676774] [2022-07-12 08:30:21,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608676774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:30:21,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:30:21,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 08:30:21,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052783267] [2022-07-12 08:30:21,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:30:21,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 08:30:21,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 08:30:21,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 08:30:21,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 08:30:21,567 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) [2022-07-12 08:30:21,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:30:21,585 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2022-07-12 08:30:21,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 08:30:21,587 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-12 08:30:21,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:30:21,599 INFO L225 Difference]: With dead ends: 46 [2022-07-12 08:30:21,599 INFO L226 Difference]: Without dead ends: 19 [2022-07-12 08:30:21,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 08:30:21,606 INFO L413 NwaCegarLoop]: 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 [2022-07-12 08:30:21,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:30:21,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-12 08:30:21,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-12 08:30:21,631 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) [2022-07-12 08:30:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-12 08:30:21,633 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-07-12 08:30:21,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:30:21,634 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-12 08:30:21,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 08:30:21,634 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-12 08:30:21,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 08:30:21,636 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:30:21,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:30:21,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-12 08:30:21,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 08:30:21,860 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:30:21,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:30:21,861 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-07-12 08:30:21,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 08:30:21,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703474914] [2022-07-12 08:30:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:30:21,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 08:30:21,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 08:30:21,868 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 08:30:21,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process