./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fc0c31e5-0eca-4919-bfed-c7c0998c65f3/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fc0c31e5-0eca-4919-bfed-c7c0998c65f3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fc0c31e5-0eca-4919-bfed-c7c0998c65f3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fc0c31e5-0eca-4919-bfed-c7c0998c65f3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/matrix-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fc0c31e5-0eca-4919-bfed-c7c0998c65f3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fc0c31e5-0eca-4919-bfed-c7c0998c65f3/bin/utaipan --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 Taipan --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 0.1.25-f470102 [2019-12-07 12:53:30,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:53:30,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:53:30,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:53:30,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:53:30,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:53:30,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:53:30,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:53:30,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:53:30,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:53:30,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:53:30,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:53:30,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:53:30,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:53:30,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:53:30,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:53:30,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:53:30,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:53:30,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:53:30,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:53:30,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:53:30,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:53:30,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:53:30,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:53:30,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:53:30,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:53:30,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:53:30,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:53:30,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:53:30,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:53:30,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:53:30,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:53:30,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:53:30,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:53:30,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:53:30,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:53:30,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:53:30,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:53:30,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:53:30,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:53:30,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:53:30,637 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fc0c31e5-0eca-4919-bfed-c7c0998c65f3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 12:53:30,647 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:53:30,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:53:30,648 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 12:53:30,648 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 12:53:30,648 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 12:53:30,648 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 12:53:30,649 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 12:53:30,649 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 12:53:30,649 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 12:53:30,649 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 12:53:30,649 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 12:53:30,649 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 12:53:30,649 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 12:53:30,650 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 12:53:30,650 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 12:53:30,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:53:30,650 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:53:30,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:53:30,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:53:30,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:53:30,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 12:53:30,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:53:30,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 12:53:30,651 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 12:53:30,651 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:53:30,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:53:30,651 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:53:30,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 12:53:30,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:53:30,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:53:30,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:53:30,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:53:30,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:53:30,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:53:30,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 12:53:30,653 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 12:53:30,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 12:53:30,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 12:53:30,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:53:30,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 12:53:30,653 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_fc0c31e5-0eca-4919-bfed-c7c0998c65f3/bin/utaipan 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 -> Taipan 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 [2019-12-07 12:53:30,751 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:53:30,759 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:53:30,761 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:53:30,762 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:53:30,762 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:53:30,763 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fc0c31e5-0eca-4919-bfed-c7c0998c65f3/bin/utaipan/../../sv-benchmarks/c/loops/matrix-2.c [2019-12-07 12:53:30,799 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc0c31e5-0eca-4919-bfed-c7c0998c65f3/bin/utaipan/data/f47550059/82f5f07df87f49f8b850f35f48ea9a73/FLAG26581431e [2019-12-07 12:53:31,198 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:53:31,198 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fc0c31e5-0eca-4919-bfed-c7c0998c65f3/sv-benchmarks/c/loops/matrix-2.c [2019-12-07 12:53:31,202 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc0c31e5-0eca-4919-bfed-c7c0998c65f3/bin/utaipan/data/f47550059/82f5f07df87f49f8b850f35f48ea9a73/FLAG26581431e [2019-12-07 12:53:31,211 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fc0c31e5-0eca-4919-bfed-c7c0998c65f3/bin/utaipan/data/f47550059/82f5f07df87f49f8b850f35f48ea9a73 [2019-12-07 12:53:31,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:53:31,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:53:31,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:53:31,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:53:31,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:53:31,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:53:31" (1/1) ... [2019-12-07 12:53:31,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e4de5e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:53:31, skipping insertion in model container [2019-12-07 12:53:31,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:53:31" (1/1) ... [2019-12-07 12:53:31,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:53:31,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:53:31,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:53:31,348 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:53:31,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:53:31,417 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:53:31,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:53:31 WrapperNode [2019-12-07 12:53:31,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:53:31,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:53:31,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:53:31,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:53:31,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:53:31" (1/1) ... [2019-12-07 12:53:31,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:53:31" (1/1) ... [2019-12-07 12:53:31,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:53:31,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:53:31,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:53:31,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:53:31,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:53:31" (1/1) ... [2019-12-07 12:53:31,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:53:31" (1/1) ... [2019-12-07 12:53:31,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:53:31" (1/1) ... [2019-12-07 12:53:31,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:53:31" (1/1) ... [2019-12-07 12:53:31,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:53:31" (1/1) ... [2019-12-07 12:53:31,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:53:31" (1/1) ... [2019-12-07 12:53:31,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:53:31" (1/1) ... [2019-12-07 12:53:31,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:53:31,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:53:31,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:53:31,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:53:31,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:53:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c31e5-0eca-4919-bfed-c7c0998c65f3/bin/utaipan/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 [2019-12-07 12:53:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 12:53:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:53:31,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:53:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 12:53:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 12:53:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 12:53:31,722 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:53:31,722 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-12-07 12:53:31,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:53:31 BoogieIcfgContainer [2019-12-07 12:53:31,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:53:31,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:53:31,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:53:31,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:53:31,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:53:31" (1/3) ... [2019-12-07 12:53:31,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a944189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:53:31, skipping insertion in model container [2019-12-07 12:53:31,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:53:31" (2/3) ... [2019-12-07 12:53:31,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a944189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:53:31, skipping insertion in model container [2019-12-07 12:53:31,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:53:31" (3/3) ... [2019-12-07 12:53:31,729 INFO L109 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2019-12-07 12:53:31,736 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:53:31,740 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 12:53:31,749 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 12:53:31,763 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:53:31,763 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 12:53:31,763 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:53:31,763 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:53:31,763 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:53:31,763 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:53:31,763 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:53:31,763 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:53:31,772 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-12-07 12:53:31,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 12:53:31,775 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:53:31,776 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 12:53:31,776 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:53:31,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:53:31,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1210984012, now seen corresponding path program 1 times [2019-12-07 12:53:31,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:53:31,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625009041] [2019-12-07 12:53:31,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:53:31,833 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 12:53:31,834 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994129302] [2019-12-07 12:53:31,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c31e5-0eca-4919-bfed-c7c0998c65f3/bin/utaipan/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 [2019-12-07 12:53:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:53:31,872 INFO L264 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 12:53:31,875 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:53:31,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:53:31,910 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:53:31,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:53:31,933 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625009041] [2019-12-07 12:53:31,933 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 12:53:31,933 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994129302] [2019-12-07 12:53:31,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:53:31,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-12-07 12:53:31,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98493263] [2019-12-07 12:53:31,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 12:53:31,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:53:31,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 12:53:31,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 12:53:31,948 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 6 states. [2019-12-07 12:53:32,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:53:32,002 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2019-12-07 12:53:32,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 12:53:32,004 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-12-07 12:53:32,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:53:32,010 INFO L225 Difference]: With dead ends: 27 [2019-12-07 12:53:32,010 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 12:53:32,012 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 12:53:32,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 12:53:32,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 10. [2019-12-07 12:53:32,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 12:53:32,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2019-12-07 12:53:32,032 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 13 transitions. Word has length 6 [2019-12-07 12:53:32,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:53:32,033 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-12-07 12:53:32,033 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 12:53:32,033 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2019-12-07 12:53:32,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 12:53:32,033 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:53:32,033 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:53:32,234 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:53:32,235 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:53:32,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:53:32,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1107993929, now seen corresponding path program 1 times [2019-12-07 12:53:32,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:53:32,236 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447608056] [2019-12-07 12:53:32,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:53:32,244 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 12:53:32,244 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172793531] [2019-12-07 12:53:32,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c31e5-0eca-4919-bfed-c7c0998c65f3/bin/utaipan/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 [2019-12-07 12:53:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:53:32,299 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 12:53:32,300 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:53:32,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:53:32,323 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:53:32,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:53:32,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447608056] [2019-12-07 12:53:32,338 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 12:53:32,339 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172793531] [2019-12-07 12:53:32,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:53:32,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-12-07 12:53:32,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387870562] [2019-12-07 12:53:32,340 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 12:53:32,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:53:32,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 12:53:32,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 12:53:32,340 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. Second operand 7 states. [2019-12-07 12:53:32,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:53:32,383 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2019-12-07 12:53:32,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 12:53:32,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2019-12-07 12:53:32,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:53:32,383 INFO L225 Difference]: With dead ends: 28 [2019-12-07 12:53:32,384 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 12:53:32,384 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 12:53:32,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 12:53:32,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2019-12-07 12:53:32,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 12:53:32,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2019-12-07 12:53:32,387 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 8 [2019-12-07 12:53:32,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:53:32,387 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-12-07 12:53:32,387 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 12:53:32,387 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2019-12-07 12:53:32,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 12:53:32,387 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:53:32,388 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:53:32,588 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:53:32,589 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:53:32,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:53:32,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1548577857, now seen corresponding path program 1 times [2019-12-07 12:53:32,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:53:32,590 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519669310] [2019-12-07 12:53:32,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:53:32,597 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 12:53:32,598 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761287750] [2019-12-07 12:53:32,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c31e5-0eca-4919-bfed-c7c0998c65f3/bin/utaipan/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 [2019-12-07 12:53:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:53:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:53:32,707 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 12:53:32,707 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 12:53:32,908 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:53:32,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:53:32 BoogieIcfgContainer [2019-12-07 12:53:32,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 12:53:32,949 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:53:32,949 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:53:32,950 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:53:32,950 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:53:31" (3/4) ... [2019-12-07 12:53:32,952 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 12:53:32,985 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fc0c31e5-0eca-4919-bfed-c7c0998c65f3/bin/utaipan/witness.graphml [2019-12-07 12:53:32,985 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:53:32,987 INFO L168 Benchmark]: Toolchain (without parser) took 1772.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 942.5 MB in the beginning and 996.2 MB in the end (delta: -53.7 MB). Peak memory consumption was 51.6 MB. Max. memory is 11.5 GB. [2019-12-07 12:53:32,987 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:53:32,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 203.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -157.6 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-12-07 12:53:32,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.67 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:53:32,988 INFO L168 Benchmark]: Boogie Preprocessor took 17.11 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:53:32,988 INFO L168 Benchmark]: RCFGBuilder took 260.12 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 11.5 GB. [2019-12-07 12:53:32,989 INFO L168 Benchmark]: TraceAbstraction took 1225.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 996.2 MB in the end (delta: 71.2 MB). Peak memory consumption was 71.2 MB. Max. memory is 11.5 GB. [2019-12-07 12:53:32,989 INFO L168 Benchmark]: Witness Printer took 35.97 ms. Allocated memory is still 1.1 GB. Free memory is still 996.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:53:32,991 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 203.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -157.6 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.67 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.11 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 260.12 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1225.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 996.2 MB in the end (delta: 71.2 MB). Peak memory consumption was 71.2 MB. Max. memory is 11.5 GB. * Witness Printer took 35.97 ms. Allocated memory is still 1.1 GB. Free memory is still 996.2 MB. 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