./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/matrix-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab 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/loops/matrix-2.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 d5a6ec162428ec37050a5f893bf0066c8b3fd7be ....................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-30f4e4a [2019-11-27 23:59:19,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:59:19,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:59:19,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:59:19,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:59:19,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:59:19,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:59:19,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:59:19,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:59:19,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:59:19,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:59:19,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:59:19,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:59:19,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:59:19,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:59:19,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:59:19,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:59:19,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:59:19,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:59:19,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:59:19,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:59:19,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:59:19,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:59:19,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:59:19,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:59:19,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:59:19,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:59:19,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:59:19,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:59:19,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:59:19,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:59:19,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:59:19,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:59:19,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:59:19,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:59:19,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:59:19,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:59:19,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:59:19,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:59:19,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:59:19,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:59:19,721 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:59:19,752 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:59:19,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:59:19,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:59:19,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:59:19,754 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:59:19,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:59:19,755 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:59:19,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:59:19,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:59:19,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:59:19,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:59:19,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:59:19,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:59:19,757 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:59:19,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:59:19,757 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:59:19,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:59:19,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:59:19,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:59:19,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:59:19,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:59:19,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:59:19,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:59:19,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:59:19,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:59:19,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:59:19,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:59:19,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:59:19,761 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 -> d5a6ec162428ec37050a5f893bf0066c8b3fd7be [2019-11-27 23:59:20,085 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:59:20,104 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:59:20,109 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:59:20,110 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:59:20,111 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:59:20,112 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/matrix-2.c [2019-11-27 23:59:20,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65f0f0387/079154012234474480734f7402db3b7b/FLAGd452fb963 [2019-11-27 23:59:20,633 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:59:20,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/matrix-2.c [2019-11-27 23:59:20,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65f0f0387/079154012234474480734f7402db3b7b/FLAGd452fb963 [2019-11-27 23:59:21,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65f0f0387/079154012234474480734f7402db3b7b [2019-11-27 23:59:21,010 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:59:21,012 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:59:21,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:59:21,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:59:21,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:59:21,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:59:21" (1/1) ... [2019-11-27 23:59:21,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6eb3d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:21, skipping insertion in model container [2019-11-27 23:59:21,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:59:21" (1/1) ... [2019-11-27 23:59:21,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:59:21,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:59:21,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:59:21,338 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:59:21,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:59:21,402 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:59:21,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:21 WrapperNode [2019-11-27 23:59:21,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:59:21,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:59:21,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:59:21,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:59:21,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:21" (1/1) ... [2019-11-27 23:59:21,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:21" (1/1) ... [2019-11-27 23:59:21,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:59:21,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:59:21,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:59:21,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:59:21,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:21" (1/1) ... [2019-11-27 23:59:21,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:21" (1/1) ... [2019-11-27 23:59:21,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:21" (1/1) ... [2019-11-27 23:59:21,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:21" (1/1) ... [2019-11-27 23:59:21,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:21" (1/1) ... [2019-11-27 23:59:21,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:21" (1/1) ... [2019-11-27 23:59:21,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:21" (1/1) ... [2019-11-27 23:59:21,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:59:21,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:59:21,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:59:21,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:59:21,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:21" (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 [2019-11-27 23:59:21,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 23:59:21,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:59:21,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:59:21,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:59:21,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:59:21,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:59:21,975 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:59:21,975 INFO L297 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-27 23:59:21,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:59:21 BoogieIcfgContainer [2019-11-27 23:59:21,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:59:21,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:59:21,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:59:21,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:59:21,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:59:21" (1/3) ... [2019-11-27 23:59:21,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7491f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:59:21, skipping insertion in model container [2019-11-27 23:59:21,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:21" (2/3) ... [2019-11-27 23:59:21,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7491f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:59:21, skipping insertion in model container [2019-11-27 23:59:21,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:59:21" (3/3) ... [2019-11-27 23:59:22,001 INFO L109 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2019-11-27 23:59:22,014 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:59:22,027 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:59:22,042 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:59:22,073 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:59:22,074 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:59:22,077 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:59:22,077 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:59:22,078 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:59:22,078 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:59:22,078 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:59:22,079 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:59:22,101 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-27 23:59:22,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-27 23:59:22,112 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:59:22,113 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:59:22,114 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:59:22,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:59:22,121 INFO L82 PathProgramCache]: Analyzing trace with hash 228332486, now seen corresponding path program 1 times [2019-11-27 23:59:22,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:59:22,133 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301927436] [2019-11-27 23:59:22,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:59:22,250 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-27 23:59:22,252 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748686784] [2019-11-27 23:59:22,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:59:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:59:22,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-27 23:59:22,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:59:22,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:59:22,397 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301927436] [2019-11-27 23:59:22,397 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-27 23:59:22,397 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748686784] [2019-11-27 23:59:22,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:59:22,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-27 23:59:22,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084950735] [2019-11-27 23:59:22,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-27 23:59:22,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:59:22,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-27 23:59:22,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-27 23:59:22,416 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2019-11-27 23:59:22,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:59:22,531 INFO L93 Difference]: Finished difference Result 57 states and 86 transitions. [2019-11-27 23:59:22,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:59:22,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-27 23:59:22,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:59:22,543 INFO L225 Difference]: With dead ends: 57 [2019-11-27 23:59:22,544 INFO L226 Difference]: Without dead ends: 29 [2019-11-27 23:59:22,547 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-27 23:59:22,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-27 23:59:22,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 17. [2019-11-27 23:59:22,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-27 23:59:22,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-11-27 23:59:22,583 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 8 [2019-11-27 23:59:22,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:59:22,583 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-27 23:59:22,584 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-27 23:59:22,584 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-11-27 23:59:22,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 23:59:22,584 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:59:22,585 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:59:22,788 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:59:22,789 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:59:22,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:59:22,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1185124407, now seen corresponding path program 1 times [2019-11-27 23:59:22,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:59:22,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355974268] [2019-11-27 23:59:22,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:59:22,797 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-27 23:59:22,798 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265262319] [2019-11-27 23:59:22,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:59:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:59:22,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-27 23:59:22,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:59:22,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:59:22,891 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355974268] [2019-11-27 23:59:22,891 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-27 23:59:22,892 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265262319] [2019-11-27 23:59:22,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:59:22,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-27 23:59:22,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907531099] [2019-11-27 23:59:22,896 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-27 23:59:22,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:59:22,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-27 23:59:22,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-27 23:59:22,897 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 5 states. [2019-11-27 23:59:22,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:59:22,959 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2019-11-27 23:59:22,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:59:22,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-27 23:59:22,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:59:22,960 INFO L225 Difference]: With dead ends: 47 [2019-11-27 23:59:22,960 INFO L226 Difference]: Without dead ends: 26 [2019-11-27 23:59:22,961 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-27 23:59:22,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-27 23:59:22,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2019-11-27 23:59:22,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-27 23:59:22,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2019-11-27 23:59:22,967 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2019-11-27 23:59:22,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:59:22,967 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2019-11-27 23:59:22,967 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-27 23:59:22,967 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2019-11-27 23:59:22,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:59:22,968 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:59:22,968 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:59:23,172 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:59:23,172 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:59:23,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:59:23,173 INFO L82 PathProgramCache]: Analyzing trace with hash 206458815, now seen corresponding path program 1 times [2019-11-27 23:59:23,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:59:23,174 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985042237] [2019-11-27 23:59:23,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:59:23,180 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-27 23:59:23,180 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119260804] [2019-11-27 23:59:23,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:59:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:59:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:59:23,267 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:59:23,268 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:59:23,472 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:59:23,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:59:23 BoogieIcfgContainer [2019-11-27 23:59:23,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:59:23,504 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:59:23,504 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:59:23,504 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:59:23,505 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:59:21" (3/4) ... [2019-11-27 23:59:23,507 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:59:23,561 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:59:23,561 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:59:23,563 INFO L168 Benchmark]: Toolchain (without parser) took 2551.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -89.9 MB). Peak memory consumption was 67.9 MB. Max. memory is 11.5 GB. [2019-11-27 23:59:23,564 INFO L168 Benchmark]: CDTParser took 0.31 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. [2019-11-27 23:59:23,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.46 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:59:23,566 INFO L168 Benchmark]: Boogie Procedure Inliner took 141.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -198.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:59:23,566 INFO L168 Benchmark]: Boogie Preprocessor took 37.22 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. [2019-11-27 23:59:23,567 INFO L168 Benchmark]: RCFGBuilder took 393.69 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-27 23:59:23,568 INFO L168 Benchmark]: TraceAbstraction took 1525.30 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: 77.2 MB). Peak memory consumption was 77.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:59:23,568 INFO L168 Benchmark]: Witness Printer took 57.47 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. [2019-11-27 23:59:23,572 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 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 390.46 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 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 141.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -198.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.22 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. * RCFGBuilder took 393.69 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1525.30 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: 77.2 MB). Peak memory consumption was 77.2 MB. Max. memory is 11.5 GB. * Witness Printer took 57.47 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: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int N_LIN=__VERIFIER_nondet_uint(); [L15] unsigned int N_COL=__VERIFIER_nondet_uint(); [L16] unsigned int j,k; [L17] int matriz[N_COL][N_LIN], maior; [L19] maior = __VERIFIER_nondet_int() [L20] j=0 [L20] COND TRUE jmaior [L26] EXPR matriz[j][k] [L26] maior = matriz[j][k] [L21] k++ [L21] COND FALSE !(k