./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/gcd02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 20ed64ec 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/recursive/gcd02.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ad183272c46520d125e7fadb8bd25966ebd670c1 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 11:18:46,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 11:18:46,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 11:18:46,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 11:18:46,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 11:18:46,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 11:18:46,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 11:18:46,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 11:18:46,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 11:18:46,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 11:18:46,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 11:18:46,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 11:18:46,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 11:18:46,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 11:18:46,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 11:18:46,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 11:18:46,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 11:18:46,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 11:18:46,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 11:18:46,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 11:18:46,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 11:18:46,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 11:18:46,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 11:18:46,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 11:18:46,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 11:18:46,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 11:18:46,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 11:18:46,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 11:18:46,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 11:18:46,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 11:18:46,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 11:18:46,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 11:18:46,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 11:18:46,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 11:18:46,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 11:18:46,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 11:18:46,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 11:18:46,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 11:18:46,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 11:18:46,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 11:18:46,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 11:18:46,629 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-08-27 11:18:46,647 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 11:18:46,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 11:18:46,649 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 11:18:46,649 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 11:18:46,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 11:18:46,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 11:18:46,651 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 11:18:46,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 11:18:46,652 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 11:18:46,652 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 11:18:46,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 11:18:46,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 11:18:46,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 11:18:46,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 11:18:46,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 11:18:46,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 11:18:46,654 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 11:18:46,654 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 11:18:46,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 11:18:46,654 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 11:18:46,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 11:18:46,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 11:18:46,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 11:18:46,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 11:18:46,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 11:18:46,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 11:18:46,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 11:18:46,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 11:18:46,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 11:18:46,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 11:18:46,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 11:18:46,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 11:18:46,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad183272c46520d125e7fadb8bd25966ebd670c1 [2021-08-27 11:18:46,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 11:18:46,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 11:18:46,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 11:18:46,901 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 11:18:46,901 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 11:18:46,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/gcd02.c [2021-08-27 11:18:46,948 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a3cf3f5f/ed7aebc5505f49b8bf06e9071bc42e60/FLAG01cd3c528 [2021-08-27 11:18:47,303 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 11:18:47,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/gcd02.c [2021-08-27 11:18:47,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a3cf3f5f/ed7aebc5505f49b8bf06e9071bc42e60/FLAG01cd3c528 [2021-08-27 11:18:47,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a3cf3f5f/ed7aebc5505f49b8bf06e9071bc42e60 [2021-08-27 11:18:47,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 11:18:47,323 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 11:18:47,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 11:18:47,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 11:18:47,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 11:18:47,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:18:47" (1/1) ... [2021-08-27 11:18:47,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45062044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:18:47, skipping insertion in model container [2021-08-27 11:18:47,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:18:47" (1/1) ... [2021-08-27 11:18:47,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 11:18:47,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 11:18:47,437 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/gcd02.c[623,636] [2021-08-27 11:18:47,443 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/gcd02.c[1283,1296] [2021-08-27 11:18:47,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 11:18:47,448 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 11:18:47,456 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/gcd02.c[623,636] [2021-08-27 11:18:47,459 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/gcd02.c[1283,1296] [2021-08-27 11:18:47,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 11:18:47,469 INFO L208 MainTranslator]: Completed translation [2021-08-27 11:18:47,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:18:47 WrapperNode [2021-08-27 11:18:47,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 11:18:47,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 11:18:47,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 11:18:47,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 11:18:47,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:18:47" (1/1) ... [2021-08-27 11:18:47,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:18:47" (1/1) ... [2021-08-27 11:18:47,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 11:18:47,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 11:18:47,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 11:18:47,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 11:18:47,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:18:47" (1/1) ... [2021-08-27 11:18:47,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:18:47" (1/1) ... [2021-08-27 11:18:47,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:18:47" (1/1) ... [2021-08-27 11:18:47,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:18:47" (1/1) ... [2021-08-27 11:18:47,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:18:47" (1/1) ... [2021-08-27 11:18:47,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:18:47" (1/1) ... [2021-08-27 11:18:47,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:18:47" (1/1) ... [2021-08-27 11:18:47,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 11:18:47,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 11:18:47,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 11:18:47,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 11:18:47,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:18:47" (1/1) ... [2021-08-27 11:18:47,561 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 11:18:47,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:18:47,589 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) [2021-08-27 11:18:47,596 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 [2021-08-27 11:18:47,619 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2021-08-27 11:18:47,619 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2021-08-27 11:18:47,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 11:18:47,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 11:18:47,620 INFO L130 BoogieDeclarations]: Found specification of procedure divides [2021-08-27 11:18:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure divides [2021-08-27 11:18:47,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 11:18:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 11:18:47,866 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 11:18:47,866 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-27 11:18:47,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:18:47 BoogieIcfgContainer [2021-08-27 11:18:47,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 11:18:47,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 11:18:47,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 11:18:47,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 11:18:47,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:18:47" (1/3) ... [2021-08-27 11:18:47,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7b7797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:18:47, skipping insertion in model container [2021-08-27 11:18:47,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:18:47" (2/3) ... [2021-08-27 11:18:47,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7b7797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:18:47, skipping insertion in model container [2021-08-27 11:18:47,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:18:47" (3/3) ... [2021-08-27 11:18:47,873 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd02.c [2021-08-27 11:18:47,876 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 11:18:47,876 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-27 11:18:47,906 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 11:18:47,910 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-27 11:18:47,911 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-27 11:18:47,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 30 states have (on average 1.5) internal successors, (45), 36 states have internal predecessors, (45), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-27 11:18:47,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 11:18:47,928 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:18:47,928 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 11:18:47,929 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 11:18:47,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:18:47,933 INFO L82 PathProgramCache]: Analyzing trace with hash -23952042, now seen corresponding path program 1 times [2021-08-27 11:18:47,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:18:47,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485337681] [2021-08-27 11:18:47,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:18:47,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:18:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:48,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:18:48,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:18:48,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485337681] [2021-08-27 11:18:48,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485337681] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:18:48,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:18:48,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 11:18:48,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124409815] [2021-08-27 11:18:48,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 11:18:48,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:18:48,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 11:18:48,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 11:18:48,135 INFO L87 Difference]: Start difference. First operand has 44 states, 30 states have (on average 1.5) internal successors, (45), 36 states have internal predecessors, (45), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:18:48,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:18:48,287 INFO L93 Difference]: Finished difference Result 83 states and 105 transitions. [2021-08-27 11:18:48,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 11:18:48,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-27 11:18:48,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:18:48,293 INFO L225 Difference]: With dead ends: 83 [2021-08-27 11:18:48,294 INFO L226 Difference]: Without dead ends: 32 [2021-08-27 11:18:48,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.1ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-27 11:18:48,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-27 11:18:48,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-08-27 11:18:48,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 26 states have internal predecessors, (28), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 11:18:48,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-08-27 11:18:48,325 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 11 [2021-08-27 11:18:48,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:18:48,326 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-08-27 11:18:48,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:18:48,326 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-08-27 11:18:48,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 11:18:48,328 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:18:48,328 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 11:18:48,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 11:18:48,329 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 11:18:48,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:18:48,332 INFO L82 PathProgramCache]: Analyzing trace with hash -23952266, now seen corresponding path program 1 times [2021-08-27 11:18:48,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:18:48,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775228777] [2021-08-27 11:18:48,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:18:48,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:18:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:18:48,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:18:48,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775228777] [2021-08-27 11:18:48,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775228777] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:18:48,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:18:48,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 11:18:48,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132929796] [2021-08-27 11:18:48,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 11:18:48,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:18:48,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 11:18:48,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 11:18:48,419 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:18:48,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:18:48,514 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-08-27 11:18:48,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 11:18:48,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-27 11:18:48,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:18:48,518 INFO L225 Difference]: With dead ends: 32 [2021-08-27 11:18:48,518 INFO L226 Difference]: Without dead ends: 30 [2021-08-27 11:18:48,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.1ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-27 11:18:48,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-27 11:18:48,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-08-27 11:18:48,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 11:18:48,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-08-27 11:18:48,528 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11 [2021-08-27 11:18:48,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:18:48,528 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-08-27 11:18:48,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:18:48,529 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-08-27 11:18:48,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 11:18:48,530 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:18:48,530 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 11:18:48,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 11:18:48,530 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 11:18:48,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:18:48,531 INFO L82 PathProgramCache]: Analyzing trace with hash 346469594, now seen corresponding path program 1 times [2021-08-27 11:18:48,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:18:48,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568419202] [2021-08-27 11:18:48,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:18:48,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:18:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:48,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 11:18:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:48,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:18:48,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:18:48,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568419202] [2021-08-27 11:18:48,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568419202] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:18:48,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:18:48,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-27 11:18:48,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312156017] [2021-08-27 11:18:48,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 11:18:48,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:18:48,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 11:18:48,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-27 11:18:48,668 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 11:18:48,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:18:48,818 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2021-08-27 11:18:48,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 11:18:48,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-08-27 11:18:48,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:18:48,821 INFO L225 Difference]: With dead ends: 42 [2021-08-27 11:18:48,821 INFO L226 Difference]: Without dead ends: 41 [2021-08-27 11:18:48,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 64.0ms TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-27 11:18:48,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-27 11:18:48,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-08-27 11:18:48,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 30 states have internal predecessors, (32), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 11:18:48,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2021-08-27 11:18:48,835 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 17 [2021-08-27 11:18:48,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:18:48,835 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2021-08-27 11:18:48,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 11:18:48,835 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2021-08-27 11:18:48,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-27 11:18:48,836 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:18:48,836 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 11:18:48,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 11:18:48,836 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 11:18:48,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:18:48,837 INFO L82 PathProgramCache]: Analyzing trace with hash -2144344432, now seen corresponding path program 1 times [2021-08-27 11:18:48,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:18:48,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765974219] [2021-08-27 11:18:48,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:18:48,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:18:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:48,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 11:18:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:18:48,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:18:48,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765974219] [2021-08-27 11:18:48,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765974219] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:18:48,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:18:48,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 11:18:48,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257224106] [2021-08-27 11:18:48,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 11:18:48,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:18:48,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 11:18:48,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 11:18:48,869 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 11:18:48,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:18:48,884 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2021-08-27 11:18:48,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 11:18:48,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-08-27 11:18:48,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:18:48,886 INFO L225 Difference]: With dead ends: 38 [2021-08-27 11:18:48,886 INFO L226 Difference]: Without dead ends: 37 [2021-08-27 11:18:48,887 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 11:18:48,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-27 11:18:48,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-27 11:18:48,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 29 states have internal predecessors, (31), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 11:18:48,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2021-08-27 11:18:48,897 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 18 [2021-08-27 11:18:48,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:18:48,898 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2021-08-27 11:18:48,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 11:18:48,898 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2021-08-27 11:18:48,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 11:18:48,899 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:18:48,899 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 11:18:48,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 11:18:48,899 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 11:18:48,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:18:48,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1147675421, now seen corresponding path program 1 times [2021-08-27 11:18:48,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:18:48,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319809682] [2021-08-27 11:18:48,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:18:48,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:18:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:48,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 11:18:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:18:49,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:18:49,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319809682] [2021-08-27 11:18:49,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319809682] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:18:49,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092939218] [2021-08-27 11:18:49,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:18:49,081 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:18:49,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:18:49,083 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:18:49,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 11:18:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:49,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-27 11:18:49,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:18:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:18:49,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092939218] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:18:49,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 11:18:49,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 19 [2021-08-27 11:18:49,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593652844] [2021-08-27 11:18:49,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 11:18:49,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:18:49,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 11:18:49,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2021-08-27 11:18:49,527 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 11:18:49,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:18:49,685 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2021-08-27 11:18:49,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 11:18:49,686 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-08-27 11:18:49,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:18:49,686 INFO L225 Difference]: With dead ends: 46 [2021-08-27 11:18:49,686 INFO L226 Difference]: Without dead ends: 31 [2021-08-27 11:18:49,687 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 268.1ms TimeCoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-08-27 11:18:49,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-08-27 11:18:49,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-08-27 11:18:49,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 11:18:49,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-08-27 11:18:49,689 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 23 [2021-08-27 11:18:49,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:18:49,689 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-08-27 11:18:49,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 11:18:49,689 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-08-27 11:18:49,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-27 11:18:49,690 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:18:49,690 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 11:18:49,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 11:18:49,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:18:49,905 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 11:18:49,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:18:49,905 INFO L82 PathProgramCache]: Analyzing trace with hash 207304407, now seen corresponding path program 1 times [2021-08-27 11:18:49,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:18:49,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416152643] [2021-08-27 11:18:49,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:18:49,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:18:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:49,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 11:18:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:49,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 11:18:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:50,012 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-27 11:18:50,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:18:50,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416152643] [2021-08-27 11:18:50,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416152643] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:18:50,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:18:50,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-27 11:18:50,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146800253] [2021-08-27 11:18:50,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 11:18:50,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:18:50,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 11:18:50,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-27 11:18:50,013 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 11:18:50,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:18:50,136 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2021-08-27 11:18:50,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 11:18:50,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2021-08-27 11:18:50,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:18:50,139 INFO L225 Difference]: With dead ends: 43 [2021-08-27 11:18:50,139 INFO L226 Difference]: Without dead ends: 42 [2021-08-27 11:18:50,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 48.1ms TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-08-27 11:18:50,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-08-27 11:18:50,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-08-27 11:18:50,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.1) internal successors, (33), 31 states have internal predecessors, (33), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-08-27 11:18:50,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2021-08-27 11:18:50,144 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 27 [2021-08-27 11:18:50,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:18:50,144 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2021-08-27 11:18:50,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 11:18:50,145 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2021-08-27 11:18:50,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-27 11:18:50,148 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:18:50,148 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 11:18:50,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 11:18:50,149 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 11:18:50,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:18:50,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1567415017, now seen corresponding path program 1 times [2021-08-27 11:18:50,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:18:50,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658165631] [2021-08-27 11:18:50,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:18:50,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:18:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:50,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 11:18:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:50,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 11:18:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:50,277 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 11:18:50,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:18:50,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658165631] [2021-08-27 11:18:50,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658165631] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:18:50,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895656329] [2021-08-27 11:18:50,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:18:50,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:18:50,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:18:50,279 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:18:50,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-27 11:18:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:50,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 11:18:50,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:18:50,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-27 11:18:50,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895656329] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:18:50,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 11:18:50,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2021-08-27 11:18:50,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506605027] [2021-08-27 11:18:50,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 11:18:50,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:18:50,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 11:18:50,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2021-08-27 11:18:50,583 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 10 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 11:18:50,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:18:50,718 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2021-08-27 11:18:50,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 11:18:50,718 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2021-08-27 11:18:50,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:18:50,719 INFO L225 Difference]: With dead ends: 52 [2021-08-27 11:18:50,719 INFO L226 Difference]: Without dead ends: 43 [2021-08-27 11:18:50,719 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 171.8ms TimeCoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2021-08-27 11:18:50,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-08-27 11:18:50,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-08-27 11:18:50,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 32 states have (on average 1.09375) internal successors, (35), 33 states have internal predecessors, (35), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) [2021-08-27 11:18:50,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2021-08-27 11:18:50,722 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 27 [2021-08-27 11:18:50,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:18:50,723 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2021-08-27 11:18:50,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 11:18:50,723 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2021-08-27 11:18:50,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-27 11:18:50,723 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:18:50,723 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 11:18:50,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-27 11:18:50,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-08-27 11:18:50,924 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 11:18:50,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:18:50,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1739599136, now seen corresponding path program 1 times [2021-08-27 11:18:50,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:18:50,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763352016] [2021-08-27 11:18:50,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:18:50,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:18:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:50,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 11:18:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:51,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 11:18:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:51,042 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-27 11:18:51,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:18:51,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763352016] [2021-08-27 11:18:51,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763352016] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:18:51,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65127534] [2021-08-27 11:18:51,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:18:51,044 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:18:51,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:18:51,061 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:18:51,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-27 11:18:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:51,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-27 11:18:51,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:18:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-27 11:18:51,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65127534] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:18:51,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 11:18:51,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 21 [2021-08-27 11:18:51,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496281796] [2021-08-27 11:18:51,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 11:18:51,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:18:51,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 11:18:51,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2021-08-27 11:18:51,451 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 12 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 11:18:51,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:18:51,618 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2021-08-27 11:18:51,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 11:18:51,624 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2021-08-27 11:18:51,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:18:51,624 INFO L225 Difference]: With dead ends: 52 [2021-08-27 11:18:51,624 INFO L226 Difference]: Without dead ends: 37 [2021-08-27 11:18:51,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 216.7ms TimeCoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2021-08-27 11:18:51,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-27 11:18:51,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-27 11:18:51,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 29 states have internal predecessors, (30), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2021-08-27 11:18:51,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2021-08-27 11:18:51,632 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 33 [2021-08-27 11:18:51,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:18:51,632 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2021-08-27 11:18:51,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 11:18:51,632 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2021-08-27 11:18:51,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-27 11:18:51,633 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:18:51,633 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 11:18:51,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-27 11:18:51,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:18:51,845 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 11:18:51,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:18:51,846 INFO L82 PathProgramCache]: Analyzing trace with hash -378656390, now seen corresponding path program 1 times [2021-08-27 11:18:51,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:18:51,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208162116] [2021-08-27 11:18:51,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:18:51,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:18:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:51,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 11:18:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:51,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 11:18:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:51,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 11:18:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:52,016 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-08-27 11:18:52,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:18:52,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208162116] [2021-08-27 11:18:52,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208162116] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:18:52,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958716119] [2021-08-27 11:18:52,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:18:52,016 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:18:52,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:18:52,017 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:18:52,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-27 11:18:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:18:52,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-27 11:18:52,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:18:52,387 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-27 11:18:52,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958716119] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:18:52,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 11:18:52,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 21 [2021-08-27 11:18:52,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648641400] [2021-08-27 11:18:52,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 11:18:52,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:18:52,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 11:18:52,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2021-08-27 11:18:52,389 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 11:18:52,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:18:52,492 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2021-08-27 11:18:52,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 11:18:52,492 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2021-08-27 11:18:52,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:18:52,492 INFO L225 Difference]: With dead ends: 37 [2021-08-27 11:18:52,492 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 11:18:52,493 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 230.2ms TimeCoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2021-08-27 11:18:52,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 11:18:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 11:18:52,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-08-27 11:18:52,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 11:18:52,494 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2021-08-27 11:18:52,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:18:52,494 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 11:18:52,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 11:18:52,494 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 11:18:52,494 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 11:18:52,496 INFO L764 garLoopResultBuilder]: Registering result SAFE for location dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:18:52,496 INFO L764 garLoopResultBuilder]: Registering result SAFE for location dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:18:52,496 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:18:52,496 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:18:52,497 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:18:52,497 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:18:52,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-27 11:18:52,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:18:52,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-27 11:18:52,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:18:52,849 INFO L857 garLoopResultBuilder]: For program point L33(lines 33 35) no Hoare annotation was computed. [2021-08-27 11:18:52,849 INFO L857 garLoopResultBuilder]: For program point dividesFINAL(lines 32 40) no Hoare annotation was computed. [2021-08-27 11:18:52,850 INFO L857 garLoopResultBuilder]: For program point dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 39) no Hoare annotation was computed. [2021-08-27 11:18:52,850 INFO L857 garLoopResultBuilder]: For program point dividesEXIT(lines 32 40) no Hoare annotation was computed. [2021-08-27 11:18:52,850 INFO L857 garLoopResultBuilder]: For program point dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 39) no Hoare annotation was computed. [2021-08-27 11:18:52,850 INFO L857 garLoopResultBuilder]: For program point L39(line 39) no Hoare annotation was computed. [2021-08-27 11:18:52,850 INFO L857 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2021-08-27 11:18:52,851 INFO L853 garLoopResultBuilder]: At program point L39-2(line 39) the Hoare annotation is: (let ((.cse0 (not (< 0 |divides_#in~n|)))) (and (or (not (< |divides_#in~m| 2147483647)) (< divides_~m 2147483647) .cse0) (or (not (<= |divides_#in~m| 2147483647)) .cse0 (and (<= divides_~m 2147483647) (< 0 divides_~n) (<= divides_~n divides_~m))))) [2021-08-27 11:18:52,851 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 38) no Hoare annotation was computed. [2021-08-27 11:18:52,851 INFO L857 garLoopResultBuilder]: For program point L39-3(line 39) no Hoare annotation was computed. [2021-08-27 11:18:52,851 INFO L860 garLoopResultBuilder]: At program point dividesENTRY(lines 32 40) the Hoare annotation is: true [2021-08-27 11:18:52,851 INFO L857 garLoopResultBuilder]: For program point gcdEXIT(lines 17 29) no Hoare annotation was computed. [2021-08-27 11:18:52,851 INFO L857 garLoopResultBuilder]: For program point L25(lines 25 27) no Hoare annotation was computed. [2021-08-27 11:18:52,852 INFO L857 garLoopResultBuilder]: For program point gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2021-08-27 11:18:52,852 INFO L857 garLoopResultBuilder]: For program point gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-08-27 11:18:52,852 INFO L857 garLoopResultBuilder]: For program point gcdFINAL(lines 17 29) no Hoare annotation was computed. [2021-08-27 11:18:52,852 INFO L857 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2021-08-27 11:18:52,852 INFO L857 garLoopResultBuilder]: For program point L28-1(line 28) no Hoare annotation was computed. [2021-08-27 11:18:52,852 INFO L857 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-08-27 11:18:52,852 INFO L853 garLoopResultBuilder]: At program point L28-2(line 28) the Hoare annotation is: (or (not (<= |gcd_#in~y2| 2147483647)) (and (< 0 gcd_~y1) (<= gcd_~y1 (+ gcd_~y2 2147483646)) (= gcd_~y1 |gcd_#in~y1|) (<= gcd_~y2 2147483647)) (not (<= |gcd_#in~y1| 2147483647))) [2021-08-27 11:18:52,852 INFO L857 garLoopResultBuilder]: For program point gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-08-27 11:18:52,852 INFO L857 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-08-27 11:18:52,853 INFO L857 garLoopResultBuilder]: For program point L28-3(line 28) no Hoare annotation was computed. [2021-08-27 11:18:52,853 INFO L853 garLoopResultBuilder]: At program point L26-2(line 26) the Hoare annotation is: (or (not (<= |gcd_#in~y2| 2147483647)) (and (< 0 gcd_~y1) (<= gcd_~y1 (+ gcd_~y2 2147483646)) (= gcd_~y1 |gcd_#in~y1|) (<= gcd_~y2 2147483647)) (not (<= |gcd_#in~y1| 2147483647))) [2021-08-27 11:18:52,853 INFO L860 garLoopResultBuilder]: At program point gcdENTRY(lines 17 29) the Hoare annotation is: true [2021-08-27 11:18:52,853 INFO L857 garLoopResultBuilder]: For program point L26-3(line 26) no Hoare annotation was computed. [2021-08-27 11:18:52,853 INFO L857 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-08-27 11:18:52,853 INFO L857 garLoopResultBuilder]: For program point gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2021-08-27 11:18:52,853 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 21) no Hoare annotation was computed. [2021-08-27 11:18:52,854 INFO L857 garLoopResultBuilder]: For program point L18-2(lines 17 29) no Hoare annotation was computed. [2021-08-27 11:18:52,854 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-27 11:18:52,854 INFO L857 garLoopResultBuilder]: For program point L54(line 54) no Hoare annotation was computed. [2021-08-27 11:18:52,854 INFO L853 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (and (<= ULTIMATE.start_main_~m~0 2147483647) (<= ULTIMATE.start_main_~n~0 2147483647)) [2021-08-27 11:18:52,854 INFO L857 garLoopResultBuilder]: For program point L52-1(line 52) no Hoare annotation was computed. [2021-08-27 11:18:52,854 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 50) no Hoare annotation was computed. [2021-08-27 11:18:52,854 INFO L857 garLoopResultBuilder]: For program point L44(lines 44 46) no Hoare annotation was computed. [2021-08-27 11:18:52,854 INFO L860 garLoopResultBuilder]: At program point L42(lines 42 59) the Hoare annotation is: true [2021-08-27 11:18:52,855 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-27 11:18:52,855 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-27 11:18:52,855 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-27 11:18:52,855 INFO L853 garLoopResultBuilder]: At program point L53(line 53) the Hoare annotation is: (and (<= ULTIMATE.start_main_~m~0 2147483647) (<= ULTIMATE.start_main_~n~0 2147483647) (< 0 ULTIMATE.start_main_~z~0)) [2021-08-27 11:18:52,855 INFO L857 garLoopResultBuilder]: For program point L53-1(line 53) no Hoare annotation was computed. [2021-08-27 11:18:52,855 INFO L857 garLoopResultBuilder]: For program point L51(lines 51 58) no Hoare annotation was computed. [2021-08-27 11:18:52,855 INFO L857 garLoopResultBuilder]: For program point L53-2(lines 53 57) no Hoare annotation was computed. [2021-08-27 11:18:52,858 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 11:18:52,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 11:18:52 BoogieIcfgContainer [2021-08-27 11:18:52,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 11:18:52,865 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 11:18:52,865 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 11:18:52,866 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 11:18:52,866 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:18:47" (3/4) ... [2021-08-27 11:18:52,868 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 11:18:52,871 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure divides [2021-08-27 11:18:52,872 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2021-08-27 11:18:52,875 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-08-27 11:18:52,876 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-08-27 11:18:52,876 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 11:18:52,876 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 11:18:52,896 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 11:18:52,896 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 11:18:52,897 INFO L168 Benchmark]: Toolchain (without parser) took 5573.28 ms. Allocated memory was 54.5 MB in the beginning and 119.5 MB in the end (delta: 65.0 MB). Free memory was 32.8 MB in the beginning and 54.7 MB in the end (delta: -22.0 MB). Peak memory consumption was 44.5 MB. Max. memory is 16.1 GB. [2021-08-27 11:18:52,897 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 54.5 MB. Free memory was 36.0 MB in the beginning and 36.0 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 11:18:52,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 145.15 ms. Allocated memory is still 54.5 MB. Free memory was 32.7 MB in the beginning and 22.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 11:18:52,897 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.76 ms. Allocated memory is still 54.5 MB. Free memory was 22.9 MB in the beginning and 37.2 MB in the end (delta: -14.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 11:18:52,897 INFO L168 Benchmark]: Boogie Preprocessor took 30.18 ms. Allocated memory is still 54.5 MB. Free memory was 37.2 MB in the beginning and 36.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 11:18:52,897 INFO L168 Benchmark]: RCFGBuilder took 312.89 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 36.1 MB in the beginning and 45.6 MB in the end (delta: -9.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2021-08-27 11:18:52,898 INFO L168 Benchmark]: TraceAbstraction took 4996.32 ms. Allocated memory was 67.1 MB in the beginning and 119.5 MB in the end (delta: 52.4 MB). Free memory was 45.1 MB in the beginning and 57.9 MB in the end (delta: -12.8 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB. [2021-08-27 11:18:52,898 INFO L168 Benchmark]: Witness Printer took 30.35 ms. Allocated memory is still 119.5 MB. Free memory was 57.9 MB in the beginning and 54.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 11:18:52,899 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 54.5 MB. Free memory was 36.0 MB in the beginning and 36.0 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 145.15 ms. Allocated memory is still 54.5 MB. Free memory was 32.7 MB in the beginning and 22.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.76 ms. Allocated memory is still 54.5 MB. Free memory was 22.9 MB in the beginning and 37.2 MB in the end (delta: -14.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.18 ms. Allocated memory is still 54.5 MB. Free memory was 37.2 MB in the beginning and 36.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 312.89 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 36.1 MB in the beginning and 45.6 MB in the end (delta: -9.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4996.32 ms. Allocated memory was 67.1 MB in the beginning and 119.5 MB in the end (delta: 52.4 MB). Free memory was 45.1 MB in the beginning and 57.9 MB in the end (delta: -12.8 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB. * Witness Printer took 30.35 ms. Allocated memory is still 119.5 MB. Free memory was 57.9 MB in the beginning and 54.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 39]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 39]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 44 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 4953.8ms, OverallIterations: 9, TraceHistogramMax: 3, EmptinessCheckTime: 14.5ms, AutomataDifference: 1152.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 136.0ms, InitialAbstractionConstructionTime: 11.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 176 SDtfs, 209 SDslu, 713 SDs, 0 SdLazy, 1079 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 570.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1109.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 68.1ms AutomataMinimizationTime, 9 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 8 LocationsWithAnnotation, 42 PreInvPairs, 52 NumberOfFragments, 100 HoareAnnotationTreeSize, 42 FomulaSimplifications, 91 FormulaSimplificationTreeSizeReduction, 34.5ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 76 FormulaSimplificationTreeSizeReductionInter, 94.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 52.2ms SsaConstructionTime, 198.0ms SatisfiabilityAnalysisTime, 2040.7ms InterpolantComputationTime, 324 NumberOfCodeBlocks, 324 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 311 ConstructedInterpolants, 0 QuantifiedInterpolants, 1191 SizeOfPredicates, 16 NumberOfNonLiveVariables, 444 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 57/73 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 - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-27 11:18:52,931 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...