./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_2+newton_1_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_2+newton_1_4.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 8791b111097588f326aaf544c3865a21bd353d95ed7e15d093f7405d42c088eb --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:46:46,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:46:46,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:46:46,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:46:46,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:46:46,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:46:46,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:46:46,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:46:46,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:46:46,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:46:46,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:46:46,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:46:46,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:46:46,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:46:46,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:46:46,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:46:46,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:46:46,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:46:46,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:46:46,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:46:46,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:46:46,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:46:46,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:46:46,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:46:46,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:46:46,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:46:46,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:46:46,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:46:46,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:46:46,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:46:46,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:46:46,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:46:46,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:46:46,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:46:46,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:46:46,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:46:46,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:46:46,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:46:46,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:46:46,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:46:46,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:46:46,613 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:46:46,638 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:46:46,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:46:46,639 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:46:46,639 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:46:46,640 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:46:46,640 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:46:46,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:46:46,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:46:46,641 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:46:46,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:46:46,642 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:46:46,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:46:46,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:46:46,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:46:46,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:46:46,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:46:46,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:46:46,643 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:46:46,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:46:46,643 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:46:46,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:46:46,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:46:46,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:46:46,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:46:46,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:46:46,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:46:46,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:46:46,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:46:46,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:46:46,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:46:46,646 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:46:46,647 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:46:46,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:46:46,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:46:46,647 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8791b111097588f326aaf544c3865a21bd353d95ed7e15d093f7405d42c088eb [2021-12-22 12:46:46,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:46:46,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:46:46,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:46:46,858 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:46:46,859 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:46:46,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_1_4.i [2021-12-22 12:46:46,918 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2509ead98/5fb2abda3616459a83eadbce605a4f03/FLAG1b13754df [2021-12-22 12:46:47,268 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:46:47,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_4.i [2021-12-22 12:46:47,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2509ead98/5fb2abda3616459a83eadbce605a4f03/FLAG1b13754df [2021-12-22 12:46:47,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2509ead98/5fb2abda3616459a83eadbce605a4f03 [2021-12-22 12:46:47,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:46:47,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:46:47,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:46:47,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:46:47,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:46:47,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:46:47" (1/1) ... [2021-12-22 12:46:47,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@703f0dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:47, skipping insertion in model container [2021-12-22 12:46:47,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:46:47" (1/1) ... [2021-12-22 12:46:47,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:46:47,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:46:47,407 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_4.i[1226,1239] [2021-12-22 12:46:47,440 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_4.i[2820,2833] [2021-12-22 12:46:47,442 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:46:47,448 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:46:47,461 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_4.i[1226,1239] [2021-12-22 12:46:47,473 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_4.i[2820,2833] [2021-12-22 12:46:47,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:46:47,483 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:46:47,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:47 WrapperNode [2021-12-22 12:46:47,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:46:47,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:46:47,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:46:47,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:46:47,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:47" (1/1) ... [2021-12-22 12:46:47,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:47" (1/1) ... [2021-12-22 12:46:47,527 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-12-22 12:46:47,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:46:47,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:46:47,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:46:47,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:46:47,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:47" (1/1) ... [2021-12-22 12:46:47,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:47" (1/1) ... [2021-12-22 12:46:47,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:47" (1/1) ... [2021-12-22 12:46:47,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:47" (1/1) ... [2021-12-22 12:46:47,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:47" (1/1) ... [2021-12-22 12:46:47,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:47" (1/1) ... [2021-12-22 12:46:47,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:47" (1/1) ... [2021-12-22 12:46:47,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:46:47,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:46:47,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:46:47,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:46:47,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:47" (1/1) ... [2021-12-22 12:46:47,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:46:47,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:46:47,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 12:46:47,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 12:46:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:46:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:46:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:46:47,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:46:47,724 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:46:47,725 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:46:47,834 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:46:47,838 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:46:47,838 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 12:46:47,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:46:47 BoogieIcfgContainer [2021-12-22 12:46:47,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:46:47,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:46:47,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:46:47,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:46:47,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:46:47" (1/3) ... [2021-12-22 12:46:47,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ba8b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:46:47, skipping insertion in model container [2021-12-22 12:46:47,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:47" (2/3) ... [2021-12-22 12:46:47,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ba8b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:46:47, skipping insertion in model container [2021-12-22 12:46:47,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:46:47" (3/3) ... [2021-12-22 12:46:47,845 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_4.i [2021-12-22 12:46:47,849 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:46:47,849 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 12:46:47,909 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:46:47,916 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 12:46:47,925 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 12:46:47,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:46:47,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 12:46:47,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:46:47,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:46:47,948 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:46:47,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:46:47,951 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-22 12:46:47,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:46:47,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841888153] [2021-12-22 12:46:47,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:46:47,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:46:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:46:48,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:46:48,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:46:48,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841888153] [2021-12-22 12:46:48,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841888153] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:46:48,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:46:48,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 12:46:48,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930182173] [2021-12-22 12:46:48,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:46:48,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 12:46:48,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:46:48,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 12:46:48,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 12:46:48,124 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:46:48,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:46:48,141 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-12-22 12:46:48,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 12:46:48,143 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-22 12:46:48,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:46:48,150 INFO L225 Difference]: With dead ends: 47 [2021-12-22 12:46:48,150 INFO L226 Difference]: Without dead ends: 19 [2021-12-22 12:46:48,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 12:46:48,158 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:46:48,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:46:48,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-22 12:46:48,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-22 12:46:48,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:46:48,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-22 12:46:48,197 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-22 12:46:48,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:46:48,198 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-22 12:46:48,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:46:48,198 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-22 12:46:48,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 12:46:48,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:46:48,198 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:46:48,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:46:48,199 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:46:48,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:46:48,199 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-22 12:46:48,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:46:48,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721499799] [2021-12-22 12:46:48,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:46:48,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:46:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 12:46:48,214 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 12:46:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 12:46:48,257 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 12:46:48,257 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 12:46:48,258 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-22 12:46:48,259 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-22 12:46:48,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:46:48,285 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-22 12:46:48,288 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 12:46:48,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 12:46:48 BoogieIcfgContainer [2021-12-22 12:46:48,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 12:46:48,314 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 12:46:48,314 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 12:46:48,314 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 12:46:48,315 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:46:47" (3/4) ... [2021-12-22 12:46:48,320 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-22 12:46:48,320 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 12:46:48,321 INFO L158 Benchmark]: Toolchain (without parser) took 1038.83ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 64.0MB in the beginning and 51.4MB in the end (delta: 12.6MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2021-12-22 12:46:48,322 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 94.4MB. Free memory is still 51.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 12:46:48,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.96ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 63.7MB in the beginning and 88.7MB in the end (delta: -25.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 12:46:48,325 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.53ms. Allocated memory is still 113.2MB. Free memory was 88.7MB in the beginning and 87.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 12:46:48,326 INFO L158 Benchmark]: Boogie Preprocessor took 34.59ms. Allocated memory is still 113.2MB. Free memory was 87.1MB in the beginning and 85.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 12:46:48,328 INFO L158 Benchmark]: RCFGBuilder took 275.35ms. Allocated memory is still 113.2MB. Free memory was 85.6MB in the beginning and 75.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 12:46:48,328 INFO L158 Benchmark]: TraceAbstraction took 472.56ms. Allocated memory is still 113.2MB. Free memory was 74.5MB in the beginning and 51.9MB in the end (delta: 22.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-22 12:46:48,328 INFO L158 Benchmark]: Witness Printer took 6.32ms. Allocated memory is still 113.2MB. Free memory is still 51.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 12:46:48,331 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 94.4MB. Free memory is still 51.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 201.96ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 63.7MB in the beginning and 88.7MB in the end (delta: -25.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.53ms. Allocated memory is still 113.2MB. Free memory was 88.7MB in the beginning and 87.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.59ms. Allocated memory is still 113.2MB. Free memory was 87.1MB in the beginning and 85.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 275.35ms. Allocated memory is still 113.2MB. Free memory was 85.6MB in the beginning and 75.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 472.56ms. Allocated memory is still 113.2MB. Free memory was 74.5MB in the beginning and 51.9MB in the end (delta: 22.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 6.32ms. Allocated memory is still 113.2MB. Free memory is still 51.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 > -0.8f && IN < 0.8f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=49] [L102] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-22 12:46:48,361 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_2+newton_1_4.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 8791b111097588f326aaf544c3865a21bd353d95ed7e15d093f7405d42c088eb --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:46:50,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:46:50,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:46:50,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:46:50,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:46:50,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:46:50,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:46:50,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:46:50,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:46:50,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:46:50,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:46:50,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:46:50,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:46:50,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:46:50,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:46:50,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:46:50,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:46:50,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:46:50,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:46:50,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:46:50,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:46:50,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:46:50,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:46:50,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:46:50,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:46:50,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:46:50,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:46:50,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:46:50,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:46:50,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:46:50,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:46:50,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:46:50,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:46:50,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:46:50,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:46:50,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:46:50,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:46:50,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:46:50,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:46:50,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:46:50,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:46:50,165 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-22 12:46:50,196 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:46:50,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:46:50,196 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:46:50,197 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:46:50,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:46:50,197 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:46:50,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:46:50,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:46:50,198 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:46:50,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:46:50,199 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:46:50,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:46:50,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:46:50,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:46:50,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:46:50,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:46:50,200 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 12:46:50,200 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 12:46:50,200 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 12:46:50,200 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:46:50,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:46:50,201 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:46:50,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:46:50,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:46:50,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:46:50,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:46:50,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:46:50,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:46:50,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:46:50,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:46:50,202 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 12:46:50,202 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 12:46:50,202 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:46:50,202 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:46:50,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:46:50,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:46:50,203 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 12:46:50,203 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8791b111097588f326aaf544c3865a21bd353d95ed7e15d093f7405d42c088eb [2021-12-22 12:46:50,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:46:50,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:46:50,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:46:50,445 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:46:50,445 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:46:50,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_1_4.i [2021-12-22 12:46:50,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0ce2b9ae/421d83be4b924b40a7a52b1b62c3fedb/FLAGf38e7fe99 [2021-12-22 12:46:50,879 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:46:50,880 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_4.i [2021-12-22 12:46:50,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0ce2b9ae/421d83be4b924b40a7a52b1b62c3fedb/FLAGf38e7fe99 [2021-12-22 12:46:50,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0ce2b9ae/421d83be4b924b40a7a52b1b62c3fedb [2021-12-22 12:46:50,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:46:50,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:46:50,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:46:50,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:46:50,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:46:50,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:46:50" (1/1) ... [2021-12-22 12:46:50,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14880ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:50, skipping insertion in model container [2021-12-22 12:46:50,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:46:50" (1/1) ... [2021-12-22 12:46:50,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:46:50,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:46:51,065 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_4.i[1226,1239] [2021-12-22 12:46:51,099 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_4.i[2820,2833] [2021-12-22 12:46:51,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:46:51,119 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:46:51,139 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_4.i[1226,1239] [2021-12-22 12:46:51,171 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_4.i[2820,2833] [2021-12-22 12:46:51,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:46:51,185 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:46:51,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:51 WrapperNode [2021-12-22 12:46:51,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:46:51,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:46:51,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:46:51,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:46:51,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:51" (1/1) ... [2021-12-22 12:46:51,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:51" (1/1) ... [2021-12-22 12:46:51,231 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-12-22 12:46:51,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:46:51,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:46:51,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:46:51,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:46:51,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:51" (1/1) ... [2021-12-22 12:46:51,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:51" (1/1) ... [2021-12-22 12:46:51,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:51" (1/1) ... [2021-12-22 12:46:51,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:51" (1/1) ... [2021-12-22 12:46:51,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:51" (1/1) ... [2021-12-22 12:46:51,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:51" (1/1) ... [2021-12-22 12:46:51,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:51" (1/1) ... [2021-12-22 12:46:51,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:46:51,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:46:51,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:46:51,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:46:51,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:51" (1/1) ... [2021-12-22 12:46:51,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:46:51,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:46:51,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 12:46:51,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 12:46:51,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:46:51,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-22 12:46:51,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:46:51,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:46:51,388 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:46:51,389 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:46:57,480 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:46:57,483 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:46:57,484 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 12:46:57,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:46:57 BoogieIcfgContainer [2021-12-22 12:46:57,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:46:57,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:46:57,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:46:57,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:46:57,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:46:50" (1/3) ... [2021-12-22 12:46:57,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d0b57a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:46:57, skipping insertion in model container [2021-12-22 12:46:57,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:46:51" (2/3) ... [2021-12-22 12:46:57,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d0b57a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:46:57, skipping insertion in model container [2021-12-22 12:46:57,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:46:57" (3/3) ... [2021-12-22 12:46:57,489 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_4.i [2021-12-22 12:46:57,492 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:46:57,492 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 12:46:57,547 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:46:57,554 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 12:46:57,554 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 12:46:57,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:46:57,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 12:46:57,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:46:57,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:46:57,583 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:46:57,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:46:57,600 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-22 12:46:57,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 12:46:57,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214863939] [2021-12-22 12:46:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:46:57,608 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 12:46:57,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 12:46:57,624 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 12:46:57,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-22 12:46:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:46:58,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 12:46:58,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 12:46:58,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:46:58,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 12:46:58,711 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 12:46:58,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214863939] [2021-12-22 12:46:58,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214863939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:46:58,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:46:58,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 12:46:58,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663990529] [2021-12-22 12:46:58,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:46:58,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 12:46:58,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 12:46:58,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 12:46:58,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 12:46:58,742 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:46:58,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:46:58,754 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-12-22 12:46:58,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 12:46:58,756 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-22 12:46:58,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:46:58,762 INFO L225 Difference]: With dead ends: 47 [2021-12-22 12:46:58,763 INFO L226 Difference]: Without dead ends: 19 [2021-12-22 12:46:58,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 12:46:58,769 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:46:58,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:46:58,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-22 12:46:58,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-22 12:46:58,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:46:58,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-22 12:46:58,796 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-22 12:46:58,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:46:58,796 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-22 12:46:58,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:46:58,797 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-22 12:46:58,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 12:46:58,798 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:46:58,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:46:58,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-22 12:46:59,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 12:46:59,012 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:46:59,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:46:59,012 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-22 12:46:59,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 12:46:59,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470306119] [2021-12-22 12:46:59,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:46:59,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 12:46:59,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 12:46:59,028 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 12:46:59,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process