./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ms4f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/array-fpi/ms4f.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8b1ff7c3d7f3c8cf245efdfe656c26c90ac88f02 ........................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 15:35:13,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 15:35:13,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 15:35:13,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 15:35:13,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 15:35:13,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 15:35:13,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 15:35:13,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 15:35:13,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 15:35:13,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 15:35:13,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 15:35:13,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 15:35:13,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 15:35:13,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 15:35:13,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 15:35:13,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 15:35:13,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 15:35:13,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 15:35:13,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 15:35:13,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 15:35:13,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 15:35:13,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 15:35:13,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 15:35:13,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 15:35:13,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 15:35:13,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 15:35:13,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 15:35:13,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 15:35:13,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 15:35:13,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 15:35:13,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 15:35:13,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 15:35:13,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 15:35:13,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 15:35:13,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 15:35:13,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 15:35:13,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 15:35:13,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 15:35:13,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 15:35:13,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 15:35:13,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 15:35:13,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 15:35:13,469 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 15:35:13,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 15:35:13,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 15:35:13,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 15:35:13,472 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 15:35:13,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 15:35:13,473 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 15:35:13,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 15:35:13,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 15:35:13,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 15:35:13,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 15:35:13,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 15:35:13,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 15:35:13,476 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 15:35:13,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 15:35:13,476 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 15:35:13,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 15:35:13,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 15:35:13,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 15:35:13,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 15:35:13,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 15:35:13,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 15:35:13,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 15:35:13,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 15:35:13,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 15:35:13,480 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 15:35:13,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 15:35:13,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 15:35:13,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 15:35:13,481 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 ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b1ff7c3d7f3c8cf245efdfe656c26c90ac88f02 [2019-11-28 15:35:13,771 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 15:35:13,786 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 15:35:13,789 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 15:35:13,791 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 15:35:13,791 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 15:35:13,792 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ms4f.c [2019-11-28 15:35:13,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4de3194c6/030d1e525bc343e093d9752847dce450/FLAG07cf044d0 [2019-11-28 15:35:14,224 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 15:35:14,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ms4f.c [2019-11-28 15:35:14,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4de3194c6/030d1e525bc343e093d9752847dce450/FLAG07cf044d0 [2019-11-28 15:35:14,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4de3194c6/030d1e525bc343e093d9752847dce450 [2019-11-28 15:35:14,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 15:35:14,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 15:35:14,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 15:35:14,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 15:35:14,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 15:35:14,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:35:14" (1/1) ... [2019-11-28 15:35:14,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@495d7f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14, skipping insertion in model container [2019-11-28 15:35:14,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:35:14" (1/1) ... [2019-11-28 15:35:14,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 15:35:14,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 15:35:14,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 15:35:14,838 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 15:35:14,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 15:35:14,872 INFO L208 MainTranslator]: Completed translation [2019-11-28 15:35:14,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14 WrapperNode [2019-11-28 15:35:14,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 15:35:14,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 15:35:14,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 15:35:14,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 15:35:14,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2019-11-28 15:35:14,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2019-11-28 15:35:14,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 15:35:14,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 15:35:14,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 15:35:14,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 15:35:14,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2019-11-28 15:35:14,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2019-11-28 15:35:14,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2019-11-28 15:35:14,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2019-11-28 15:35:14,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2019-11-28 15:35:14,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2019-11-28 15:35:14,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2019-11-28 15:35:14,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 15:35:14,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 15:35:14,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 15:35:14,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 15:35:14,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (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 [2019-11-28 15:35:15,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 15:35:15,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 15:35:15,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 15:35:15,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 15:35:15,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 15:35:15,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 15:35:15,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 15:35:15,418 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 15:35:15,418 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-28 15:35:15,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:35:15 BoogieIcfgContainer [2019-11-28 15:35:15,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 15:35:15,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 15:35:15,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 15:35:15,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 15:35:15,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:35:14" (1/3) ... [2019-11-28 15:35:15,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c3ce2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:35:15, skipping insertion in model container [2019-11-28 15:35:15,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (2/3) ... [2019-11-28 15:35:15,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c3ce2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:35:15, skipping insertion in model container [2019-11-28 15:35:15,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:35:15" (3/3) ... [2019-11-28 15:35:15,432 INFO L109 eAbstractionObserver]: Analyzing ICFG ms4f.c [2019-11-28 15:35:15,443 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 15:35:15,450 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 15:35:15,464 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 15:35:15,490 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 15:35:15,490 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 15:35:15,490 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 15:35:15,491 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 15:35:15,491 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 15:35:15,491 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 15:35:15,491 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 15:35:15,491 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 15:35:15,507 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-11-28 15:35:15,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 15:35:15,514 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:35:15,515 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:35:15,515 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:35:15,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:35:15,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1476218026, now seen corresponding path program 1 times [2019-11-28 15:35:15,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:35:15,533 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068687358] [2019-11-28 15:35:15,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:35:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:35:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:35:15,682 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068687358] [2019-11-28 15:35:15,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:35:15,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 15:35:15,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257755648] [2019-11-28 15:35:15,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 15:35:15,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:35:15,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 15:35:15,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 15:35:15,707 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2019-11-28 15:35:15,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:35:15,727 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2019-11-28 15:35:15,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 15:35:15,728 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-28 15:35:15,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:35:15,738 INFO L225 Difference]: With dead ends: 29 [2019-11-28 15:35:15,738 INFO L226 Difference]: Without dead ends: 13 [2019-11-28 15:35:15,741 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 15:35:15,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-28 15:35:15,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-28 15:35:15,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 15:35:15,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-11-28 15:35:15,775 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2019-11-28 15:35:15,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:35:15,775 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-28 15:35:15,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 15:35:15,776 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-11-28 15:35:15,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 15:35:15,776 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:35:15,776 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:35:15,777 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:35:15,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:35:15,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1304115419, now seen corresponding path program 1 times [2019-11-28 15:35:15,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:35:15,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754529989] [2019-11-28 15:35:15,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:35:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:35:15,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:35:15,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754529989] [2019-11-28 15:35:15,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:35:15,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 15:35:15,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569678247] [2019-11-28 15:35:15,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 15:35:15,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:35:15,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 15:35:15,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 15:35:15,862 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2019-11-28 15:35:15,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:35:15,918 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2019-11-28 15:35:15,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 15:35:15,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-28 15:35:15,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:35:15,920 INFO L225 Difference]: With dead ends: 23 [2019-11-28 15:35:15,920 INFO L226 Difference]: Without dead ends: 15 [2019-11-28 15:35:15,921 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 15:35:15,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-28 15:35:15,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-28 15:35:15,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 15:35:15,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-28 15:35:15,925 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2019-11-28 15:35:15,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:35:15,926 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-28 15:35:15,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 15:35:15,926 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-28 15:35:15,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 15:35:15,926 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:35:15,927 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:35:15,928 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:35:15,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:35:15,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1358761923, now seen corresponding path program 1 times [2019-11-28 15:35:15,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:35:15,930 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191318555] [2019-11-28 15:35:15,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:35:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:35:16,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 15:35:16,009 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191318555] [2019-11-28 15:35:16,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:35:16,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 15:35:16,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471231105] [2019-11-28 15:35:16,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 15:35:16,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:35:16,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 15:35:16,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 15:35:16,012 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2019-11-28 15:35:16,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:35:16,070 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2019-11-28 15:35:16,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 15:35:16,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 15:35:16,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:35:16,072 INFO L225 Difference]: With dead ends: 25 [2019-11-28 15:35:16,072 INFO L226 Difference]: Without dead ends: 18 [2019-11-28 15:35:16,073 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 15:35:16,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-28 15:35:16,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2019-11-28 15:35:16,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-28 15:35:16,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-28 15:35:16,078 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2019-11-28 15:35:16,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:35:16,079 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-28 15:35:16,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 15:35:16,079 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-11-28 15:35:16,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 15:35:16,080 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:35:16,080 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:35:16,080 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:35:16,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:35:16,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1565637502, now seen corresponding path program 1 times [2019-11-28 15:35:16,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:35:16,082 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660362673] [2019-11-28 15:35:16,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:35:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 15:35:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 15:35:16,186 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 15:35:16,187 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 15:35:16,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:35:16 BoogieIcfgContainer [2019-11-28 15:35:16,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 15:35:16,216 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 15:35:16,216 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 15:35:16,217 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 15:35:16,217 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:35:15" (3/4) ... [2019-11-28 15:35:16,220 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 15:35:16,273 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 15:35:16,273 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 15:35:16,276 INFO L168 Benchmark]: Toolchain (without parser) took 1660.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -98.7 MB). Peak memory consumption was 42.3 MB. Max. memory is 11.5 GB. [2019-11-28 15:35:16,276 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 15:35:16,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.26 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 15:35:16,278 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -186.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 15:35:16,278 INFO L168 Benchmark]: Boogie Preprocessor took 25.11 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. [2019-11-28 15:35:16,279 INFO L168 Benchmark]: RCFGBuilder took 424.47 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: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2019-11-28 15:35:16,280 INFO L168 Benchmark]: TraceAbstraction took 795.18 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: 39.3 MB). Peak memory consumption was 39.3 MB. Max. memory is 11.5 GB. [2019-11-28 15:35:16,280 INFO L168 Benchmark]: Witness Printer took 56.90 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. [2019-11-28 15:35:16,284 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 257.26 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 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 96.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -186.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.11 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 424.47 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: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 795.18 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: 39.3 MB). Peak memory consumption was 39.3 MB. Max. memory is 11.5 GB. * Witness Printer took 56.90 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int N; VAL [N=0] [L18] N = __VERIFIER_nondet_int() [L19] COND FALSE !(N <= 0) [L22] int i; [L23] long long sum[1]; [L24] int *a = malloc(sizeof(int)*N); [L26] i=0 VAL [N=1] [L26] COND TRUE i