./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/joey.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 54858612 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/termination-crafted-lit/joey.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 64bit --witnessprinter.graph.data.programhash 6360f720317c1229a4bb277806239106bfb4e5c0 ............................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 04:06:23,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:06:23,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:06:23,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:06:23,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:06:23,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:06:23,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:06:23,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:06:23,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:06:23,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:06:23,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:06:23,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:06:23,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:06:23,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:06:23,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:06:23,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:06:23,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:06:23,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:06:23,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:06:23,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:06:23,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:06:23,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:06:23,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:06:23,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:06:23,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:06:23,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:06:23,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:06:23,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:06:23,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:06:23,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:06:23,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:06:23,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:06:23,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:06:23,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:06:23,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:06:23,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:06:23,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:06:23,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:06:23,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:06:23,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:06:23,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:06:23,720 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-26 04:06:23,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:06:23,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:06:23,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:06:23,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:06:23,792 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:06:23,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:06:23,793 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:06:23,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:06:23,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:06:23,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 04:06:23,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 04:06:23,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 04:06:23,796 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-26 04:06:23,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:06:23,796 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:06:23,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 04:06:23,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:06:23,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:06:23,797 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 04:06:23,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 04:06:23,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 04:06:23,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:06:23,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 04:06:23,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 04:06:23,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:06:23,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 04:06:23,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 04:06:23,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:06:23,801 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6360f720317c1229a4bb277806239106bfb4e5c0 [2020-10-26 04:06:24,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:06:24,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:06:24,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:06:24,333 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:06:24,334 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:06:24,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/joey.c [2020-10-26 04:06:24,409 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/501298f33/e71e9eec9cd5421a85614c611b1555e9/FLAG399cc9ffb [2020-10-26 04:06:24,966 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:06:24,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/joey.c [2020-10-26 04:06:24,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/501298f33/e71e9eec9cd5421a85614c611b1555e9/FLAG399cc9ffb [2020-10-26 04:06:25,320 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/501298f33/e71e9eec9cd5421a85614c611b1555e9 [2020-10-26 04:06:25,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:06:25,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:06:25,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:06:25,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:06:25,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:06:25,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:06:25" (1/1) ... [2020-10-26 04:06:25,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a2958c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:25, skipping insertion in model container [2020-10-26 04:06:25,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:06:25" (1/1) ... [2020-10-26 04:06:25,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:06:25,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:06:25,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:06:25,546 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:06:25,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:06:25,578 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:06:25,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:25 WrapperNode [2020-10-26 04:06:25,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:06:25,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:06:25,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:06:25,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:06:25,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:25" (1/1) ... [2020-10-26 04:06:25,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:25" (1/1) ... [2020-10-26 04:06:25,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:06:25,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:06:25,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:06:25,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:06:25,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:25" (1/1) ... [2020-10-26 04:06:25,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:25" (1/1) ... [2020-10-26 04:06:25,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:25" (1/1) ... [2020-10-26 04:06:25,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:25" (1/1) ... [2020-10-26 04:06:25,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:25" (1/1) ... [2020-10-26 04:06:25,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:25" (1/1) ... [2020-10-26 04:06:25,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:25" (1/1) ... [2020-10-26 04:06:25,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:06:25,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:06:25,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:06:25,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:06:25,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 04:06:25,712 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2020-10-26 04:06:25,712 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2020-10-26 04:06:25,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:06:25,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:06:26,221 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:06:26,222 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-26 04:06:26,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:06:26 BoogieIcfgContainer [2020-10-26 04:06:26,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:06:26,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 04:06:26,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 04:06:26,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 04:06:26,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 04:06:25" (1/3) ... [2020-10-26 04:06:26,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78962752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:06:26, skipping insertion in model container [2020-10-26 04:06:26,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:25" (2/3) ... [2020-10-26 04:06:26,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78962752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:06:26, skipping insertion in model container [2020-10-26 04:06:26,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:06:26" (3/3) ... [2020-10-26 04:06:26,237 INFO L111 eAbstractionObserver]: Analyzing ICFG joey.c [2020-10-26 04:06:26,251 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 04:06:26,257 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-10-26 04:06:26,273 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-26 04:06:26,321 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 04:06:26,322 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 04:06:26,322 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 04:06:26,322 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:06:26,323 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:06:26,323 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 04:06:26,323 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:06:26,324 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 04:06:26,352 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-26 04:06:26,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-26 04:06:26,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:06:26,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-26 04:06:26,364 INFO L429 AbstractCegarLoop]: === Iteration 1 === [recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:06:26,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:06:26,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1873828178, now seen corresponding path program 1 times [2020-10-26 04:06:26,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:06:26,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044330666] [2020-10-26 04:06:26,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:06:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:26,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:06:26,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044330666] [2020-10-26 04:06:26,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:06:26,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 04:06:26,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827546571] [2020-10-26 04:06:26,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 04:06:26,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:06:26,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 04:06:26,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 04:06:26,838 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 7 states. [2020-10-26 04:06:27,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:06:27,072 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2020-10-26 04:06:27,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 04:06:27,074 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2020-10-26 04:06:27,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:06:27,086 INFO L225 Difference]: With dead ends: 66 [2020-10-26 04:06:27,086 INFO L226 Difference]: Without dead ends: 52 [2020-10-26 04:06:27,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 04:06:27,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-26 04:06:27,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2020-10-26 04:06:27,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-26 04:06:27,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-10-26 04:06:27,144 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 6 [2020-10-26 04:06:27,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:06:27,144 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-10-26 04:06:27,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 04:06:27,144 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-10-26 04:06:27,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-26 04:06:27,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:06:27,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-26 04:06:27,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 04:06:27,146 INFO L429 AbstractCegarLoop]: === Iteration 2 === [recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:06:27,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:06:27,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1873828402, now seen corresponding path program 1 times [2020-10-26 04:06:27,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:06:27,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743966311] [2020-10-26 04:06:27,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:06:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:06:27,162 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:06:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:06:27,180 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:06:27,203 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:06:27,203 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 04:06:27,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 04:06:27,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 04:06:27 BoogieIcfgContainer [2020-10-26 04:06:27,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 04:06:27,239 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:06:27,239 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:06:27,239 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:06:27,240 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:06:26" (3/4) ... [2020-10-26 04:06:27,243 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-26 04:06:27,297 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 04:06:27,297 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:06:27,307 INFO L168 Benchmark]: Toolchain (without parser) took 1973.68 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 24.0 MB in the beginning and 18.2 MB in the end (delta: 5.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2020-10-26 04:06:27,308 INFO L168 Benchmark]: CDTParser took 0.72 ms. Allocated memory is still 39.8 MB. Free memory is still 26.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:06:27,309 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.97 ms. Allocated memory is still 39.8 MB. Free memory was 23.4 MB in the beginning and 14.8 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:06:27,310 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.14 ms. Allocated memory is still 39.8 MB. Free memory was 14.8 MB in the beginning and 25.4 MB in the end (delta: -10.6 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2020-10-26 04:06:27,311 INFO L168 Benchmark]: Boogie Preprocessor took 19.07 ms. Allocated memory is still 39.8 MB. Free memory was 25.4 MB in the beginning and 24.5 MB in the end (delta: 837.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:06:27,315 INFO L168 Benchmark]: RCFGBuilder took 582.92 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 24.5 MB in the beginning and 31.5 MB in the end (delta: -6.9 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2020-10-26 04:06:27,316 INFO L168 Benchmark]: TraceAbstraction took 1011.10 ms. Allocated memory is still 48.2 MB. Free memory was 31.1 MB in the beginning and 19.8 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2020-10-26 04:06:27,317 INFO L168 Benchmark]: Witness Printer took 58.56 ms. Allocated memory is still 48.2 MB. Free memory was 19.8 MB in the beginning and 18.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:06:27,330 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 ms. Allocated memory is still 39.8 MB. Free memory is still 26.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 244.97 ms. Allocated memory is still 39.8 MB. Free memory was 23.4 MB in the beginning and 14.8 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.14 ms. Allocated memory is still 39.8 MB. Free memory was 14.8 MB in the beginning and 25.4 MB in the end (delta: -10.6 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.07 ms. Allocated memory is still 39.8 MB. Free memory was 25.4 MB in the beginning and 24.5 MB in the end (delta: 837.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 582.92 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 24.5 MB in the beginning and 31.5 MB in the end (delta: -6.9 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1011.10 ms. Allocated memory is still 48.2 MB. Free memory was 31.1 MB in the beginning and 19.8 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * Witness Printer took 58.56 ms. Allocated memory is still 48.2 MB. Free memory was 19.8 MB in the beginning and 18.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y; [L22] CALL rec(x) VAL [\old(x)=2147483647] [L10] COND FALSE !(x <= 0) VAL [\old(x)=2147483647, x=2147483647] [L12] COND FALSE !(x%2 == 0) VAL [\old(x)=2147483647, x=2147483647] [L15] ++x VAL [\old(x)=2147483647, x=2147483647] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 45 SDslu, 71 SDs, 0 SdLazy, 68 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 165 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...