./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/brs5f.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/brs5f.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 3c634baad78572eed4cece62ab3fbed72feb7f15 .......................................................................................................................................................................................................................................................................................................................................................................... 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 15:33:09,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 15:33:09,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 15:33:09,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 15:33:09,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 15:33:09,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 15:33:09,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 15:33:09,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 15:33:09,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 15:33:09,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 15:33:09,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 15:33:09,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 15:33:09,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 15:33:09,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 15:33:09,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 15:33:09,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 15:33:09,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 15:33:09,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 15:33:09,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 15:33:09,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 15:33:09,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 15:33:09,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 15:33:09,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 15:33:09,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 15:33:09,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 15:33:09,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 15:33:09,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 15:33:09,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 15:33:09,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 15:33:09,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 15:33:09,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 15:33:09,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 15:33:09,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 15:33:09,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 15:33:09,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 15:33:09,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 15:33:09,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 15:33:09,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 15:33:09,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 15:33:09,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 15:33:09,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 15:33:09,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 15:33:09,596 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 15:33:09,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 15:33:09,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 15:33:09,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 15:33:09,598 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 15:33:09,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 15:33:09,599 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 15:33:09,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 15:33:09,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 15:33:09,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 15:33:09,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 15:33:09,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 15:33:09,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 15:33:09,603 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 15:33:09,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 15:33:09,603 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 15:33:09,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 15:33:09,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 15:33:09,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 15:33:09,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 15:33:09,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 15:33:09,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 15:33:09,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 15:33:09,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 15:33:09,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 15:33:09,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 15:33:09,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 15:33:09,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 15:33:09,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 15:33:09,607 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 -> 3c634baad78572eed4cece62ab3fbed72feb7f15 [2019-11-28 15:33:09,950 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 15:33:09,967 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 15:33:09,972 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 15:33:09,974 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 15:33:09,975 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 15:33:09,976 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/brs5f.c [2019-11-28 15:33:10,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/842301895/4fa887acbe6c4138801f1a3c37bdd840/FLAG0966b3ec8 [2019-11-28 15:33:10,543 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 15:33:10,544 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs5f.c [2019-11-28 15:33:10,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/842301895/4fa887acbe6c4138801f1a3c37bdd840/FLAG0966b3ec8 [2019-11-28 15:33:10,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/842301895/4fa887acbe6c4138801f1a3c37bdd840 [2019-11-28 15:33:10,919 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 15:33:10,921 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 15:33:10,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 15:33:10,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 15:33:10,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 15:33:10,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:33:10" (1/1) ... [2019-11-28 15:33:10,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b9c6a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:10, skipping insertion in model container [2019-11-28 15:33:10,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:33:10" (1/1) ... [2019-11-28 15:33:10,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 15:33:10,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 15:33:11,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 15:33:11,185 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 15:33:11,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 15:33:11,218 INFO L208 MainTranslator]: Completed translation [2019-11-28 15:33:11,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:11 WrapperNode [2019-11-28 15:33:11,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 15:33:11,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 15:33:11,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 15:33:11,220 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 15:33:11,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:11" (1/1) ... [2019-11-28 15:33:11,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:11" (1/1) ... [2019-11-28 15:33:11,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 15:33:11,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 15:33:11,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 15:33:11,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 15:33:11,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:11" (1/1) ... [2019-11-28 15:33:11,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:11" (1/1) ... [2019-11-28 15:33:11,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:11" (1/1) ... [2019-11-28 15:33:11,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:11" (1/1) ... [2019-11-28 15:33:11,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:11" (1/1) ... [2019-11-28 15:33:11,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:11" (1/1) ... [2019-11-28 15:33:11,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:11" (1/1) ... [2019-11-28 15:33:11,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 15:33:11,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 15:33:11,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 15:33:11,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 15:33:11,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:11" (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 15:33:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 15:33:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 15:33:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 15:33:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 15:33:11,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 15:33:11,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 15:33:11,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 15:33:11,698 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 15:33:11,699 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-28 15:33:11,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:33:11 BoogieIcfgContainer [2019-11-28 15:33:11,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 15:33:11,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 15:33:11,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 15:33:11,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 15:33:11,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:33:10" (1/3) ... [2019-11-28 15:33:11,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40a63d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:33:11, skipping insertion in model container [2019-11-28 15:33:11,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:11" (2/3) ... [2019-11-28 15:33:11,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40a63d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:33:11, skipping insertion in model container [2019-11-28 15:33:11,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:33:11" (3/3) ... [2019-11-28 15:33:11,711 INFO L109 eAbstractionObserver]: Analyzing ICFG brs5f.c [2019-11-28 15:33:11,722 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 15:33:11,730 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 15:33:11,749 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 15:33:11,772 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 15:33:11,772 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 15:33:11,772 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 15:33:11,773 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 15:33:11,773 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 15:33:11,773 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 15:33:11,773 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 15:33:11,773 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 15:33:11,786 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-28 15:33:11,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 15:33:11,793 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:33:11,794 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:33:11,794 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:33:11,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:33:11,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1623807605, now seen corresponding path program 1 times [2019-11-28 15:33:11,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:33:11,810 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119630087] [2019-11-28 15:33:11,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:33:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:33:11,977 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 15:33:11,978 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119630087] [2019-11-28 15:33:11,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:33:11,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 15:33:11,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693581262] [2019-11-28 15:33:11,984 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 15:33:11,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:33:11,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 15:33:11,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 15:33:11,999 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-11-28 15:33:12,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:33:12,017 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2019-11-28 15:33:12,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 15:33:12,019 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-28 15:33:12,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:33:12,027 INFO L225 Difference]: With dead ends: 30 [2019-11-28 15:33:12,027 INFO L226 Difference]: Without dead ends: 14 [2019-11-28 15:33:12,030 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 15:33:12,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-28 15:33:12,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-28 15:33:12,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 15:33:12,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-11-28 15:33:12,059 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2019-11-28 15:33:12,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:33:12,060 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-28 15:33:12,060 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 15:33:12,061 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2019-11-28 15:33:12,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 15:33:12,061 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:33:12,062 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:33:12,062 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:33:12,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:33:12,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1308886944, now seen corresponding path program 1 times [2019-11-28 15:33:12,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:33:12,063 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956071048] [2019-11-28 15:33:12,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:33:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:33:12,140 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 15:33:12,140 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956071048] [2019-11-28 15:33:12,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:33:12,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 15:33:12,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827324920] [2019-11-28 15:33:12,143 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 15:33:12,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:33:12,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 15:33:12,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 15:33:12,144 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 3 states. [2019-11-28 15:33:12,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:33:12,234 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2019-11-28 15:33:12,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 15:33:12,235 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-28 15:33:12,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:33:12,236 INFO L225 Difference]: With dead ends: 28 [2019-11-28 15:33:12,236 INFO L226 Difference]: Without dead ends: 17 [2019-11-28 15:33:12,238 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 15:33:12,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-28 15:33:12,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-11-28 15:33:12,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-28 15:33:12,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-11-28 15:33:12,244 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2019-11-28 15:33:12,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:33:12,246 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-28 15:33:12,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 15:33:12,246 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-11-28 15:33:12,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 15:33:12,246 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:33:12,246 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:33:12,247 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:33:12,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:33:12,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1738269227, now seen corresponding path program 1 times [2019-11-28 15:33:12,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:33:12,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284758577] [2019-11-28 15:33:12,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:33:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:33:12,349 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 15:33:12,350 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284758577] [2019-11-28 15:33:12,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:33:12,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 15:33:12,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041060389] [2019-11-28 15:33:12,351 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 15:33:12,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:33:12,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 15:33:12,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 15:33:12,353 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-11-28 15:33:12,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:33:12,413 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2019-11-28 15:33:12,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 15:33:12,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-28 15:33:12,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:33:12,414 INFO L225 Difference]: With dead ends: 27 [2019-11-28 15:33:12,415 INFO L226 Difference]: Without dead ends: 20 [2019-11-28 15:33:12,415 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 15:33:12,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-28 15:33:12,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-28 15:33:12,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 15:33:12,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2019-11-28 15:33:12,421 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2019-11-28 15:33:12,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:33:12,421 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-11-28 15:33:12,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 15:33:12,422 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-11-28 15:33:12,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 15:33:12,423 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:33:12,423 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:33:12,423 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:33:12,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:33:12,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1896871737, now seen corresponding path program 1 times [2019-11-28 15:33:12,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:33:12,425 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161153471] [2019-11-28 15:33:12,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:33:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 15:33:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 15:33:12,504 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 15:33:12,505 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 15:33:12,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:33:12 BoogieIcfgContainer [2019-11-28 15:33:12,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 15:33:12,540 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 15:33:12,540 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 15:33:12,540 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 15:33:12,541 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:33:11" (3/4) ... [2019-11-28 15:33:12,543 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 15:33:12,599 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 15:33:12,599 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 15:33:12,603 INFO L168 Benchmark]: Toolchain (without parser) took 1680.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -117.7 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. [2019-11-28 15:33:12,604 INFO L168 Benchmark]: CDTParser took 0.93 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 15:33:12,605 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.07 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 948.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-28 15:33:12,606 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -200.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 15:33:12,607 INFO L168 Benchmark]: Boogie Preprocessor took 27.34 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: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-28 15:33:12,608 INFO L168 Benchmark]: RCFGBuilder took 361.34 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: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. [2019-11-28 15:33:12,609 INFO L168 Benchmark]: TraceAbstraction took 837.80 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: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. [2019-11-28 15:33:12,609 INFO L168 Benchmark]: Witness Printer took 59.67 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. [2019-11-28 15:33:12,617 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.93 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 296.07 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 948.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 91.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -200.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.34 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: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 361.34 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: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 837.80 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: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. * Witness Printer took 59.67 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: 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