./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/Pure2Phase-2.c --full-output -ea --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/Pure2Phase-2.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 aad7ddb2e0d4476ced8f52bbccb469aff17d069d .................................................................................................................................................................................................................................................................................................................... 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 0.1.25-8bd4bc6 [2020-07-29 01:22:52,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:22:52,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:22:52,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:22:52,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:22:52,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:22:52,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:22:52,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:22:52,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:22:52,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:22:52,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:22:52,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:22:52,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:22:52,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:22:52,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:22:52,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:22:52,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:22:52,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:22:52,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:22:52,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:22:52,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:22:52,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:22:52,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:22:52,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:22:52,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:22:52,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:22:52,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:22:52,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:22:52,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:22:52,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:22:52,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:22:52,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:22:52,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:22:52,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:22:52,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:22:52,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:22:52,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:22:52,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:22:52,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:22:52,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:22:52,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:22:52,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-07-29 01:22:52,556 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:22:52,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:22:52,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:22:52,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:22:52,560 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:22:52,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:22:52,561 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:22:52,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:22:52,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:22:52,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-29 01:22:52,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-29 01:22:52,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-29 01:22:52,563 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-07-29 01:22:52,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 01:22:52,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:22:52,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-29 01:22:52,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:22:52,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:22:52,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-29 01:22:52,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-29 01:22:52,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-29 01:22:52,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:22:52,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-29 01:22:52,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-29 01:22:52,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:22:52,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-29 01:22:52,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-29 01:22:52,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:22:52,568 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> aad7ddb2e0d4476ced8f52bbccb469aff17d069d [2020-07-29 01:22:52,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:22:52,897 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:22:52,900 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:22:52,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:22:52,902 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:22:52,903 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Pure2Phase-2.c [2020-07-29 01:22:52,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25cc3afd0/5f0f8e2938f94276af31c1497a5e0a0f/FLAG4ffde98c4 [2020-07-29 01:22:53,430 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:22:53,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Pure2Phase-2.c [2020-07-29 01:22:53,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25cc3afd0/5f0f8e2938f94276af31c1497a5e0a0f/FLAG4ffde98c4 [2020-07-29 01:22:53,810 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25cc3afd0/5f0f8e2938f94276af31c1497a5e0a0f [2020-07-29 01:22:53,814 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:22:53,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 01:22:53,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:22:53,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:22:53,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:22:53,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:22:53" (1/1) ... [2020-07-29 01:22:53,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba39c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:53, skipping insertion in model container [2020-07-29 01:22:53,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:22:53" (1/1) ... [2020-07-29 01:22:53,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:22:53,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:22:54,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:22:54,038 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:22:54,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:22:54,068 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:22:54,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:54 WrapperNode [2020-07-29 01:22:54,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:22:54,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 01:22:54,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 01:22:54,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 01:22:54,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:54" (1/1) ... [2020-07-29 01:22:54,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:54" (1/1) ... [2020-07-29 01:22:54,163 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 01:22:54,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:22:54,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:22:54,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:22:54,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:54" (1/1) ... [2020-07-29 01:22:54,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:54" (1/1) ... [2020-07-29 01:22:54,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:54" (1/1) ... [2020-07-29 01:22:54,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:54" (1/1) ... [2020-07-29 01:22:54,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:54" (1/1) ... [2020-07-29 01:22:54,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:54" (1/1) ... [2020-07-29 01:22:54,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:54" (1/1) ... [2020-07-29 01:22:54,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:22:54,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:22:54,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:22:54,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:22:54,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:54" (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 [2020-07-29 01:22:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:22:54,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:22:54,494 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:22:54,495 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-29 01:22:54,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:22:54 BoogieIcfgContainer [2020-07-29 01:22:54,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:22:54,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-29 01:22:54,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-29 01:22:54,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-29 01:22:54,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.07 01:22:53" (1/3) ... [2020-07-29 01:22:54,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d9ad02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:22:54, skipping insertion in model container [2020-07-29 01:22:54,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:54" (2/3) ... [2020-07-29 01:22:54,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d9ad02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:22:54, skipping insertion in model container [2020-07-29 01:22:54,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:22:54" (3/3) ... [2020-07-29 01:22:54,514 INFO L109 eAbstractionObserver]: Analyzing ICFG Pure2Phase-2.c [2020-07-29 01:22:54,526 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-29 01:22:54,535 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-07-29 01:22:54,569 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-07-29 01:22:54,602 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-29 01:22:54,609 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-29 01:22:54,609 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-29 01:22:54,610 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:22:54,610 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:22:54,610 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-29 01:22:54,610 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:22:54,610 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-29 01:22:54,631 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-07-29 01:22:54,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-07-29 01:22:54,636 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:22:54,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-07-29 01:22:54,638 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:22:54,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:22:54,643 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-07-29 01:22:54,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:22:54,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900153454] [2020-07-29 01:22:54,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:22:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:22:54,811 INFO L280 TraceCheckUtils]: 0: Hoare triple {18#true} havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;assume -2147483648 <= main_#t~nondet1 && main_#t~nondet1 <= 2147483647;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; {20#(<= ULTIMATE.start_main_~y~0 2147483647)} is VALID [2020-07-29 01:22:54,812 INFO L280 TraceCheckUtils]: 1: Hoare triple {20#(<= ULTIMATE.start_main_~y~0 2147483647)} assume !!(main_~z~0 >= 0); {20#(<= ULTIMATE.start_main_~y~0 2147483647)} is VALID [2020-07-29 01:22:54,814 INFO L280 TraceCheckUtils]: 2: Hoare triple {20#(<= ULTIMATE.start_main_~y~0 2147483647)} assume !(main_~y~0 - 1 <= 2147483647); {19#false} is VALID [2020-07-29 01:22:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:22:54,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900153454] [2020-07-29 01:22:54,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:22:54,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-07-29 01:22:54,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516725015] [2020-07-29 01:22:54,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-07-29 01:22:54,827 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-29 01:22:54,831 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-29 01:22:54,842 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 3 edges. 3 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:22:54,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-29 01:22:54,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:22:54,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-29 01:22:54,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-29 01:22:54,853 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2020-07-29 01:22:54,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:22:54,932 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-07-29 01:22:54,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-29 01:22:54,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-07-29 01:22:54,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-29 01:22:54,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-29 01:22:54,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 20 transitions. [2020-07-29 01:22:54,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-29 01:22:54,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 20 transitions. [2020-07-29 01:22:54,943 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 20 transitions. [2020-07-29 01:22:54,990 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:22:55,000 INFO L225 Difference]: With dead ends: 19 [2020-07-29 01:22:55,001 INFO L226 Difference]: Without dead ends: 10 [2020-07-29 01:22:55,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-29 01:22:55,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-07-29 01:22:55,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-07-29 01:22:55,039 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:22:55,040 INFO L82 GeneralOperation]: Start isEquivalent. First operand 10 states. Second operand 10 states. [2020-07-29 01:22:55,041 INFO L74 IsIncluded]: Start isIncluded. First operand 10 states. Second operand 10 states. [2020-07-29 01:22:55,041 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 10 states. [2020-07-29 01:22:55,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:22:55,044 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2020-07-29 01:22:55,044 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-07-29 01:22:55,044 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:22:55,045 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:22:55,045 INFO L74 IsIncluded]: Start isIncluded. First operand 10 states. Second operand 10 states. [2020-07-29 01:22:55,045 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 10 states. [2020-07-29 01:22:55,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:22:55,047 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2020-07-29 01:22:55,048 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-07-29 01:22:55,048 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:22:55,048 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:22:55,049 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:22:55,049 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:22:55,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-29 01:22:55,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-07-29 01:22:55,052 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 3 [2020-07-29 01:22:55,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-29 01:22:55,053 INFO L479 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-07-29 01:22:55,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-29 01:22:55,053 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-07-29 01:22:55,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-29 01:22:55,054 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:22:55,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-29 01:22:55,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-29 01:22:55,055 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:22:55,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:22:55,056 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-07-29 01:22:55,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:22:55,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662627173] [2020-07-29 01:22:55,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:22:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:22:55,068 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:22:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:22:55,076 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:22:55,094 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:22:55,094 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-29 01:22:55,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-29 01:22:55,113 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-29 01:22:55,113 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2020-07-29 01:22:55,113 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2020-07-29 01:22:55,113 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2020-07-29 01:22:55,114 WARN L170 areAnnotationChecker]: L19-2 has no Hoare annotation [2020-07-29 01:22:55,114 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-29 01:22:55,114 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-29 01:22:55,114 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-29 01:22:55,115 WARN L170 areAnnotationChecker]: L20-1 has no Hoare annotation [2020-07-29 01:22:55,115 WARN L170 areAnnotationChecker]: L20-1 has no Hoare annotation [2020-07-29 01:22:55,115 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-29 01:22:55,115 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-29 01:22:55,116 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-29 01:22:55,116 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-29 01:22:55,116 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-29 01:22:55,116 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-29 01:22:55,117 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-29 01:22:55,117 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-29 01:22:55,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.07 01:22:55 BoogieIcfgContainer [2020-07-29 01:22:55,120 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-29 01:22:55,120 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 01:22:55,121 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 01:22:55,121 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 01:22:55,122 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:22:54" (3/4) ... [2020-07-29 01:22:55,125 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-29 01:22:55,169 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-29 01:22:55,170 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 01:22:55,173 INFO L168 Benchmark]: Toolchain (without parser) took 1356.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 956.2 MB in the beginning and 1.1 GB in the end (delta: -123.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2020-07-29 01:22:55,174 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:22:55,175 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.08 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:22:55,176 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -192.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-29 01:22:55,177 INFO L168 Benchmark]: Boogie Preprocessor took 18.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-07-29 01:22:55,178 INFO L168 Benchmark]: RCFGBuilder took 318.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2020-07-29 01:22:55,178 INFO L168 Benchmark]: TraceAbstraction took 616.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 11.5 GB. [2020-07-29 01:22:55,179 INFO L168 Benchmark]: Witness Printer took 49.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:22:55,183 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 251.08 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 94.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -192.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 318.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 616.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 11.5 GB. * Witness Printer took 49.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L16] int y, z; [L17] y = __VERIFIER_nondet_int() [L18] z = __VERIFIER_nondet_int() [L19] COND TRUE z >= 0 [L20] y - 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 12 SDslu, 0 SDs, 0 SdLazy, 5 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 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...