./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_2+newton_1_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_2+newton_1_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3dbff123fe4d446bdb4fa52d8405b7591df523648ee08eb41c859388ca62eb5e --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 19:53:32,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 19:53:32,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 19:53:32,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 19:53:32,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 19:53:32,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 19:53:32,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 19:53:32,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 19:53:32,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 19:53:32,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 19:53:32,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 19:53:32,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 19:53:32,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 19:53:32,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 19:53:32,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 19:53:32,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 19:53:32,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 19:53:32,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 19:53:32,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 19:53:32,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 19:53:32,748 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 19:53:32,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 19:53:32,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 19:53:32,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 19:53:32,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 19:53:32,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 19:53:32,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 19:53:32,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 19:53:32,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 19:53:32,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 19:53:32,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 19:53:32,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 19:53:32,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 19:53:32,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 19:53:32,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 19:53:32,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 19:53:32,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 19:53:32,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 19:53:32,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 19:53:32,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 19:53:32,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 19:53:32,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 19:53:32,762 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 19:53:32,775 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 19:53:32,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 19:53:32,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 19:53:32,777 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 19:53:32,778 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 19:53:32,778 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 19:53:32,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 19:53:32,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 19:53:32,779 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 19:53:32,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 19:53:32,779 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 19:53:32,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 19:53:32,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 19:53:32,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 19:53:32,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 19:53:32,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 19:53:32,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 19:53:32,780 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 19:53:32,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 19:53:32,781 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 19:53:32,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 19:53:32,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 19:53:32,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 19:53:32,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 19:53:32,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:53:32,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 19:53:32,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 19:53:32,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 19:53:32,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 19:53:32,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 19:53:32,784 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 19:53:32,784 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 19:53:32,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 19:53:32,784 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dbff123fe4d446bdb4fa52d8405b7591df523648ee08eb41c859388ca62eb5e [2022-07-22 19:53:32,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 19:53:32,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 19:53:32,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 19:53:32,971 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 19:53:32,972 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 19:53:32,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_1_2.i [2022-07-22 19:53:33,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c57a5d00/1321dbaae3914306a29d277c480179a8/FLAG4902e199d [2022-07-22 19:53:33,380 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 19:53:33,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_2.i [2022-07-22 19:53:33,387 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c57a5d00/1321dbaae3914306a29d277c480179a8/FLAG4902e199d [2022-07-22 19:53:33,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c57a5d00/1321dbaae3914306a29d277c480179a8 [2022-07-22 19:53:33,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 19:53:33,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 19:53:33,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 19:53:33,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 19:53:33,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 19:53:33,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:53:33" (1/1) ... [2022-07-22 19:53:33,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4760398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:33, skipping insertion in model container [2022-07-22 19:53:33,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:53:33" (1/1) ... [2022-07-22 19:53:33,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 19:53:33,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 19:53:33,529 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_2+newton_1_2.i[1226,1239] [2022-07-22 19:53:33,543 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_2+newton_1_2.i[2820,2833] [2022-07-22 19:53:33,552 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:53:33,557 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 19:53:33,564 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_2+newton_1_2.i[1226,1239] [2022-07-22 19:53:33,570 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_2+newton_1_2.i[2820,2833] [2022-07-22 19:53:33,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:53:33,579 INFO L208 MainTranslator]: Completed translation [2022-07-22 19:53:33,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:33 WrapperNode [2022-07-22 19:53:33,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 19:53:33,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 19:53:33,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 19:53:33,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 19:53:33,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:33" (1/1) ... [2022-07-22 19:53:33,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:33" (1/1) ... [2022-07-22 19:53:33,602 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2022-07-22 19:53:33,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 19:53:33,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 19:53:33,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 19:53:33,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 19:53:33,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:33" (1/1) ... [2022-07-22 19:53:33,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:33" (1/1) ... [2022-07-22 19:53:33,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:33" (1/1) ... [2022-07-22 19:53:33,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:33" (1/1) ... [2022-07-22 19:53:33,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:33" (1/1) ... [2022-07-22 19:53:33,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:33" (1/1) ... [2022-07-22 19:53:33,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:33" (1/1) ... [2022-07-22 19:53:33,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 19:53:33,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 19:53:33,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 19:53:33,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 19:53:33,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:33" (1/1) ... [2022-07-22 19:53:33,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:53:33,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:53:33,649 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) [2022-07-22 19:53:33,655 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 [2022-07-22 19:53:33,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 19:53:33,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 19:53:33,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 19:53:33,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 19:53:33,721 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 19:53:33,722 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 19:53:33,838 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 19:53:33,842 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 19:53:33,842 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 19:53:33,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:53:33 BoogieIcfgContainer [2022-07-22 19:53:33,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 19:53:33,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 19:53:33,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 19:53:33,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 19:53:33,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 07:53:33" (1/3) ... [2022-07-22 19:53:33,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68737fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:53:33, skipping insertion in model container [2022-07-22 19:53:33,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:33" (2/3) ... [2022-07-22 19:53:33,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68737fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:53:33, skipping insertion in model container [2022-07-22 19:53:33,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:53:33" (3/3) ... [2022-07-22 19:53:33,849 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_2.i [2022-07-22 19:53:33,857 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 19:53:33,858 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 19:53:33,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 19:53:33,911 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@5a875e3e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@505252cc [2022-07-22 19:53:33,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 19:53:33,915 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) [2022-07-22 19:53:33,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 19:53:33,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:53:33,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:53:33,922 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:53:33,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:53:33,925 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-07-22 19:53:33,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:53:33,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401958687] [2022-07-22 19:53:33,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:53:33,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:53:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:53:34,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:53:34,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:53:34,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401958687] [2022-07-22 19:53:34,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401958687] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:53:34,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:53:34,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 19:53:34,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952554808] [2022-07-22 19:53:34,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:53:34,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 19:53:34,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:53:34,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 19:53:34,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 19:53:34,037 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) [2022-07-22 19:53:34,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:53:34,047 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-07-22 19:53:34,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 19:53:34,049 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 [2022-07-22 19:53:34,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:53:34,053 INFO L225 Difference]: With dead ends: 47 [2022-07-22 19:53:34,053 INFO L226 Difference]: Without dead ends: 19 [2022-07-22 19:53:34,055 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 [2022-07-22 19:53:34,058 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 [2022-07-22 19:53:34,058 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] [2022-07-22 19:53:34,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-22 19:53:34,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-22 19:53:34,076 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) [2022-07-22 19:53:34,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-22 19:53:34,078 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-07-22 19:53:34,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:53:34,078 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-22 19:53:34,078 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) [2022-07-22 19:53:34,078 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-22 19:53:34,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 19:53:34,079 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:53:34,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:53:34,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 19:53:34,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:53:34,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:53:34,080 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-07-22 19:53:34,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:53:34,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282053488] [2022-07-22 19:53:34,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:53:34,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:53:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 19:53:34,099 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 19:53:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 19:53:34,123 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 19:53:34,124 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 19:53:34,125 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-22 19:53:34,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-22 19:53:34,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 19:53:34,129 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 19:53:34,132 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 19:53:34,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 07:53:34 BoogieIcfgContainer [2022-07-22 19:53:34,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 19:53:34,156 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 19:53:34,156 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 19:53:34,156 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 19:53:34,157 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:53:33" (3/4) ... [2022-07-22 19:53:34,159 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 19:53:34,159 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 19:53:34,160 INFO L158 Benchmark]: Toolchain (without parser) took 762.10ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 63.2MB in the beginning and 88.6MB in the end (delta: -25.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 19:53:34,161 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory was 50.5MB in the beginning and 50.5MB in the end (delta: 39.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 19:53:34,163 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.39ms. Allocated memory is still 94.4MB. Free memory was 63.0MB in the beginning and 70.3MB in the end (delta: -7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 19:53:34,164 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.32ms. Allocated memory is still 94.4MB. Free memory was 70.3MB in the beginning and 68.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 19:53:34,165 INFO L158 Benchmark]: Boogie Preprocessor took 16.32ms. Allocated memory is still 94.4MB. Free memory was 68.6MB in the beginning and 67.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 19:53:34,166 INFO L158 Benchmark]: RCFGBuilder took 224.29ms. Allocated memory is still 94.4MB. Free memory was 67.4MB in the beginning and 56.5MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-22 19:53:34,166 INFO L158 Benchmark]: TraceAbstraction took 310.37ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 56.0MB in the beginning and 89.2MB in the end (delta: -33.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 19:53:34,166 INFO L158 Benchmark]: Witness Printer took 2.91ms. Allocated memory is still 115.3MB. Free memory was 89.2MB in the beginning and 88.6MB in the end (delta: 572.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 19:53:34,171 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory was 50.5MB in the beginning and 50.5MB in the end (delta: 39.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 181.39ms. Allocated memory is still 94.4MB. Free memory was 63.0MB in the beginning and 70.3MB in the end (delta: -7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.32ms. Allocated memory is still 94.4MB. Free memory was 70.3MB in the beginning and 68.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.32ms. Allocated memory is still 94.4MB. Free memory was 68.6MB in the beginning and 67.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 224.29ms. Allocated memory is still 94.4MB. Free memory was 67.4MB in the beginning and 56.5MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 310.37ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 56.0MB in the beginning and 89.2MB in the end (delta: -33.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.91ms. Allocated memory is still 115.3MB. Free memory was 89.2MB in the beginning and 88.6MB in the end (delta: 572.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 102]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 93. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=49] [L102] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, 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 [2022-07-22 19:53:34,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_2+newton_1_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3dbff123fe4d446bdb4fa52d8405b7591df523648ee08eb41c859388ca62eb5e --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 19:53:35,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 19:53:35,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 19:53:35,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 19:53:35,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 19:53:35,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 19:53:35,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 19:53:35,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 19:53:35,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 19:53:35,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 19:53:35,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 19:53:35,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 19:53:35,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 19:53:35,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 19:53:35,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 19:53:35,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 19:53:35,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 19:53:35,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 19:53:35,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 19:53:35,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 19:53:35,901 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 19:53:35,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 19:53:35,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 19:53:35,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 19:53:35,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 19:53:35,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 19:53:35,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 19:53:35,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 19:53:35,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 19:53:35,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 19:53:35,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 19:53:35,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 19:53:35,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 19:53:35,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 19:53:35,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 19:53:35,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 19:53:35,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 19:53:35,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 19:53:35,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 19:53:35,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 19:53:35,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 19:53:35,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 19:53:35,915 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-22 19:53:35,940 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 19:53:35,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 19:53:35,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 19:53:35,941 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 19:53:35,942 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 19:53:35,942 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 19:53:35,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 19:53:35,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 19:53:35,943 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 19:53:35,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 19:53:35,944 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 19:53:35,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 19:53:35,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 19:53:35,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 19:53:35,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 19:53:35,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 19:53:35,944 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 19:53:35,945 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 19:53:35,945 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 19:53:35,945 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 19:53:35,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 19:53:35,945 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 19:53:35,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 19:53:35,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 19:53:35,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 19:53:35,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 19:53:35,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:53:35,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 19:53:35,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 19:53:35,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 19:53:35,947 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 19:53:35,947 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 19:53:35,947 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 19:53:35,947 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 19:53:35,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 19:53:35,947 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 19:53:35,948 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dbff123fe4d446bdb4fa52d8405b7591df523648ee08eb41c859388ca62eb5e [2022-07-22 19:53:36,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 19:53:36,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 19:53:36,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 19:53:36,236 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 19:53:36,236 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 19:53:36,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_1_2.i [2022-07-22 19:53:36,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d35f6d275/9f4359384467413cb9b88d86b8a80dee/FLAG10d58ac9b [2022-07-22 19:53:36,648 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 19:53:36,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_2.i [2022-07-22 19:53:36,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d35f6d275/9f4359384467413cb9b88d86b8a80dee/FLAG10d58ac9b [2022-07-22 19:53:36,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d35f6d275/9f4359384467413cb9b88d86b8a80dee [2022-07-22 19:53:36,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 19:53:36,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 19:53:36,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 19:53:36,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 19:53:36,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 19:53:36,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:53:36" (1/1) ... [2022-07-22 19:53:36,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34e1ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:36, skipping insertion in model container [2022-07-22 19:53:36,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:53:36" (1/1) ... [2022-07-22 19:53:36,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 19:53:36,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 19:53:36,829 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_2+newton_1_2.i[1226,1239] [2022-07-22 19:53:36,895 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_2+newton_1_2.i[2820,2833] [2022-07-22 19:53:36,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:53:36,909 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 19:53:36,920 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_2+newton_1_2.i[1226,1239] [2022-07-22 19:53:36,941 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_2+newton_1_2.i[2820,2833] [2022-07-22 19:53:36,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:53:36,951 INFO L208 MainTranslator]: Completed translation [2022-07-22 19:53:36,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:36 WrapperNode [2022-07-22 19:53:36,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 19:53:36,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 19:53:36,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 19:53:36,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 19:53:36,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:36" (1/1) ... [2022-07-22 19:53:36,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:36" (1/1) ... [2022-07-22 19:53:36,992 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2022-07-22 19:53:36,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 19:53:36,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 19:53:36,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 19:53:36,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 19:53:36,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:36" (1/1) ... [2022-07-22 19:53:36,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:36" (1/1) ... [2022-07-22 19:53:37,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:36" (1/1) ... [2022-07-22 19:53:37,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:36" (1/1) ... [2022-07-22 19:53:37,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:36" (1/1) ... [2022-07-22 19:53:37,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:36" (1/1) ... [2022-07-22 19:53:37,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:36" (1/1) ... [2022-07-22 19:53:37,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 19:53:37,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 19:53:37,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 19:53:37,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 19:53:37,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:36" (1/1) ... [2022-07-22 19:53:37,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:53:37,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:53:37,057 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) [2022-07-22 19:53:37,077 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 [2022-07-22 19:53:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 19:53:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-22 19:53:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 19:53:37,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 19:53:37,152 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 19:53:37,153 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 19:53:42,979 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 19:53:42,983 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 19:53:42,983 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 19:53:42,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:53:42 BoogieIcfgContainer [2022-07-22 19:53:42,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 19:53:42,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 19:53:42,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 19:53:42,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 19:53:42,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 07:53:36" (1/3) ... [2022-07-22 19:53:42,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f03f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:53:42, skipping insertion in model container [2022-07-22 19:53:42,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:53:36" (2/3) ... [2022-07-22 19:53:42,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f03f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:53:42, skipping insertion in model container [2022-07-22 19:53:42,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:53:42" (3/3) ... [2022-07-22 19:53:42,989 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_2.i [2022-07-22 19:53:43,008 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 19:53:43,008 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 19:53:43,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 19:53:43,046 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@3d25ba14, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@79addffd [2022-07-22 19:53:43,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 19:53:43,049 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) [2022-07-22 19:53:43,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 19:53:43,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:53:43,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:53:43,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:53:43,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:53:43,060 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-07-22 19:53:43,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 19:53:43,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755875730] [2022-07-22 19:53:43,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:53:43,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 19:53:43,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 19:53:43,074 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) [2022-07-22 19:53:43,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-22 19:53:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:53:43,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 19:53:43,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:53:43,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:53:43,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:53:43,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 19:53:43,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755875730] [2022-07-22 19:53:43,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755875730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:53:43,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:53:43,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 19:53:43,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990680433] [2022-07-22 19:53:43,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:53:43,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 19:53:43,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 19:53:43,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 19:53:43,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 19:53:43,971 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) [2022-07-22 19:53:43,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:53:43,980 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-07-22 19:53:43,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 19:53:43,981 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 [2022-07-22 19:53:43,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:53:43,986 INFO L225 Difference]: With dead ends: 47 [2022-07-22 19:53:43,986 INFO L226 Difference]: Without dead ends: 19 [2022-07-22 19:53:43,988 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 [2022-07-22 19:53:43,990 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 [2022-07-22 19:53:43,990 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] [2022-07-22 19:53:44,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-22 19:53:44,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-22 19:53:44,007 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) [2022-07-22 19:53:44,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-22 19:53:44,009 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-07-22 19:53:44,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:53:44,009 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-22 19:53:44,009 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) [2022-07-22 19:53:44,009 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-22 19:53:44,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 19:53:44,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:53:44,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:53:44,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-22 19:53:44,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 19:53:44,224 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:53:44,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:53:44,224 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-07-22 19:53:44,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 19:53:44,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438809149] [2022-07-22 19:53:44,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:53:44,225 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 19:53:44,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 19:53:44,230 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) [2022-07-22 19:53:44,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process