./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 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80a7a6e2534d75656de513ef49811aa0c37b16c0 ................................................................................................................................................................................................................................................................................................................................................................ 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 0.2.0-5485861 [2020-10-25 22:16:37,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:16:37,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:16:37,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:16:37,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:16:37,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:16:37,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:16:37,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:16:37,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:16:37,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:16:37,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:16:37,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:16:37,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:16:37,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:16:37,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:16:37,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:16:37,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:16:37,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:16:37,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:16:37,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:16:37,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:16:37,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:16:37,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:16:37,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:16:37,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:16:37,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:16:37,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:16:37,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:16:37,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:16:37,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:16:37,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:16:37,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:16:37,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:16:37,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:16:37,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:16:37,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:16:37,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:16:37,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:16:37,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:16:37,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:16:37,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:16:37,740 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:16:37,785 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:16:37,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:16:37,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:16:37,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:16:37,790 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:16:37,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:16:37,791 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:16:37,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:16:37,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:16:37,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:16:37,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:16:37,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:16:37,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:16:37,793 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:16:37,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:16:37,794 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:16:37,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:16:37,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:16:37,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:16:37,795 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:16:37,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:16:37,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:16:37,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:16:37,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:16:37,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:16:37,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:16:37,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:16:37,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:16:37,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:16:37,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80a7a6e2534d75656de513ef49811aa0c37b16c0 [2020-10-25 22:16:38,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:16:38,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:16:38,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:16:38,328 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:16:38,329 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:16:38,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/matrix-2.c [2020-10-25 22:16:38,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c37be854/848a1a2757a24c5e9a9093b131c0d4cd/FLAG4158528be [2020-10-25 22:16:39,110 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:16:39,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/matrix-2.c [2020-10-25 22:16:39,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c37be854/848a1a2757a24c5e9a9093b131c0d4cd/FLAG4158528be [2020-10-25 22:16:39,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c37be854/848a1a2757a24c5e9a9093b131c0d4cd [2020-10-25 22:16:39,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:16:39,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:16:39,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:16:39,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:16:39,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:16:39,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:16:39" (1/1) ... [2020-10-25 22:16:39,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@780c70c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:39, skipping insertion in model container [2020-10-25 22:16:39,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:16:39" (1/1) ... [2020-10-25 22:16:39,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:16:39,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:16:39,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:16:39,791 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:16:39,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:16:39,855 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:16:39,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:39 WrapperNode [2020-10-25 22:16:39,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:16:39,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:16:39,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:16:39,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:16:39,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:39" (1/1) ... [2020-10-25 22:16:39,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:39" (1/1) ... [2020-10-25 22:16:39,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:16:39,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:16:39,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:16:39,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:16:39,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:39" (1/1) ... [2020-10-25 22:16:39,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:39" (1/1) ... [2020-10-25 22:16:39,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:39" (1/1) ... [2020-10-25 22:16:39,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:39" (1/1) ... [2020-10-25 22:16:39,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:39" (1/1) ... [2020-10-25 22:16:39,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:39" (1/1) ... [2020-10-25 22:16:39,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:39" (1/1) ... [2020-10-25 22:16:39,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:16:39,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:16:39,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:16:39,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:16:40,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:16:40,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:16:40,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:16:40,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 22:16:40,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:16:40,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:16:40,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 22:16:40,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:16:40,437 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:16:40,437 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-25 22:16:40,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:16:40 BoogieIcfgContainer [2020-10-25 22:16:40,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:16:40,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:16:40,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:16:40,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:16:40,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:16:39" (1/3) ... [2020-10-25 22:16:40,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c2fcca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:16:40, skipping insertion in model container [2020-10-25 22:16:40,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:39" (2/3) ... [2020-10-25 22:16:40,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c2fcca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:16:40, skipping insertion in model container [2020-10-25 22:16:40,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:16:40" (3/3) ... [2020-10-25 22:16:40,450 INFO L111 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2020-10-25 22:16:40,465 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:16:40,470 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:16:40,485 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:16:40,513 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:16:40,514 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:16:40,514 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:16:40,514 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:16:40,515 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:16:40,515 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:16:40,515 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:16:40,515 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:16:40,546 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-25 22:16:40,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-25 22:16:40,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:16:40,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:16:40,556 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:16:40,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:16:40,565 INFO L82 PathProgramCache]: Analyzing trace with hash 228332486, now seen corresponding path program 1 times [2020-10-25 22:16:40,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:16:40,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096886074] [2020-10-25 22:16:40,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:16:40,675 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 22:16:40,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515258547] [2020-10-25 22:16:40,676 INFO L95 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 [2020-10-25 22:16:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:16:40,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-25 22:16:40,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:16:40,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:16:40,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096886074] [2020-10-25 22:16:40,918 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 22:16:40,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515258547] [2020-10-25 22:16:40,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:16:40,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 22:16:40,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626081441] [2020-10-25 22:16:40,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 22:16:40,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:16:40,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 22:16:40,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 22:16:40,944 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 4 states. [2020-10-25 22:16:41,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:16:41,070 INFO L93 Difference]: Finished difference Result 58 states and 87 transitions. [2020-10-25 22:16:41,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:16:41,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-25 22:16:41,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:16:41,082 INFO L225 Difference]: With dead ends: 58 [2020-10-25 22:16:41,083 INFO L226 Difference]: Without dead ends: 29 [2020-10-25 22:16:41,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:16:41,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-25 22:16:41,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 17. [2020-10-25 22:16:41,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-25 22:16:41,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2020-10-25 22:16:41,125 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 8 [2020-10-25 22:16:41,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:16:41,125 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2020-10-25 22:16:41,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 22:16:41,126 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-10-25 22:16:41,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 22:16:41,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:16:41,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:16:41,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-10-25 22:16:41,332 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:16:41,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:16:41,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1185124407, now seen corresponding path program 1 times [2020-10-25 22:16:41,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:16:41,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928901234] [2020-10-25 22:16:41,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:16:41,347 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 22:16:41,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [624503996] [2020-10-25 22:16:41,348 INFO L95 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 [2020-10-25 22:16:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:16:41,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-25 22:16:41,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:16:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:16:41,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928901234] [2020-10-25 22:16:41,463 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 22:16:41,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624503996] [2020-10-25 22:16:41,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:16:41,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 22:16:41,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287144466] [2020-10-25 22:16:41,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 22:16:41,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:16:41,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 22:16:41,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 22:16:41,468 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2020-10-25 22:16:41,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:16:41,571 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2020-10-25 22:16:41,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:16:41,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-25 22:16:41,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:16:41,573 INFO L225 Difference]: With dead ends: 47 [2020-10-25 22:16:41,573 INFO L226 Difference]: Without dead ends: 26 [2020-10-25 22:16:41,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:16:41,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-25 22:16:41,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2020-10-25 22:16:41,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-25 22:16:41,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-10-25 22:16:41,579 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2020-10-25 22:16:41,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:16:41,580 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-10-25 22:16:41,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 22:16:41,580 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-10-25 22:16:41,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-25 22:16:41,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:16:41,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:16:41,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:16:41,794 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:16:41,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:16:41,796 INFO L82 PathProgramCache]: Analyzing trace with hash 206458815, now seen corresponding path program 1 times [2020-10-25 22:16:41,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:16:41,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643245632] [2020-10-25 22:16:41,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:16:41,812 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 22:16:41,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1097932031] [2020-10-25 22:16:41,816 INFO L95 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 [2020-10-25 22:16:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:16:41,869 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:16:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:16:41,889 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:16:41,914 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 22:16:41,914 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 22:16:42,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:16:42,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:16:42 BoogieIcfgContainer [2020-10-25 22:16:42,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:16:42,165 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:16:42,165 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:16:42,166 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:16:42,166 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:16:40" (3/4) ... [2020-10-25 22:16:42,169 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 22:16:42,219 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:16:42,219 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:16:42,222 INFO L168 Benchmark]: Toolchain (without parser) took 2765.68 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.4 MB in the beginning and 31.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:16:42,222 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 41.9 MB. Free memory was 21.5 MB in the beginning and 21.4 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:16:42,223 INFO L168 Benchmark]: CACSL2BoogieTranslator took 396.89 ms. Allocated memory is still 56.6 MB. Free memory was 32.8 MB in the beginning and 36.4 MB in the end (delta: -3.6 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-25 22:16:42,224 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.09 ms. Allocated memory is still 56.6 MB. Free memory was 36.4 MB in the beginning and 34.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:16:42,224 INFO L168 Benchmark]: Boogie Preprocessor took 46.68 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 33.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:16:42,225 INFO L168 Benchmark]: RCFGBuilder took 441.31 ms. Allocated memory is still 56.6 MB. Free memory was 33.3 MB in the beginning and 33.4 MB in the end (delta: -119.2 kB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2020-10-25 22:16:42,226 INFO L168 Benchmark]: TraceAbstraction took 1723.06 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 32.9 MB in the beginning and 33.5 MB in the end (delta: -531.4 kB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-10-25 22:16:42,227 INFO L168 Benchmark]: Witness Printer took 53.96 ms. Allocated memory is still 69.2 MB. Free memory was 33.5 MB in the beginning and 31.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:16:42,231 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 41.9 MB. Free memory was 21.5 MB in the beginning and 21.4 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 396.89 ms. Allocated memory is still 56.6 MB. Free memory was 32.8 MB in the beginning and 36.4 MB in the end (delta: -3.6 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.09 ms. Allocated memory is still 56.6 MB. Free memory was 36.4 MB in the beginning and 34.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.68 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 33.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 441.31 ms. Allocated memory is still 56.6 MB. Free memory was 33.3 MB in the beginning and 33.4 MB in the end (delta: -119.2 kB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1723.06 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 32.9 MB in the beginning and 33.5 MB in the end (delta: -531.4 kB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * Witness Printer took 53.96 ms. Allocated memory is still 69.2 MB. Free memory was 33.5 MB in the beginning and 31.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] unsigned int N_LIN=__VERIFIER_nondet_uint(); [L17] unsigned int N_COL=__VERIFIER_nondet_uint(); [L18] unsigned int j,k; [L19] int matriz[N_COL][N_LIN], maior; [L21] maior = __VERIFIER_nondet_int() [L22] j=0 [L22] COND TRUE jmaior [L28] EXPR matriz[j][k] [L28] maior = matriz[j][k] [L23] k++ [L23] COND FALSE !(k