./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_97b45499-7b07-47ee-8e14-a0fea99fed28/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_97b45499-7b07-47ee-8e14-a0fea99fed28/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_97b45499-7b07-47ee-8e14-a0fea99fed28/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_97b45499-7b07-47ee-8e14-a0fea99fed28/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/matrix-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_97b45499-7b07-47ee-8e14-a0fea99fed28/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_97b45499-7b07-47ee-8e14-a0fea99fed28/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 0.1.24-cad4683 [2019-10-22 11:23:01,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:23:01,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:23:01,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:23:01,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:23:01,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:23:01,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:23:01,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:23:01,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:23:01,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:23:01,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:23:01,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:23:01,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:23:01,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:23:01,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:23:01,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:23:01,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:23:01,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:23:01,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:23:01,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:23:01,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:23:01,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:23:01,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:23:01,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:23:01,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:23:01,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:23:01,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:23:01,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:23:01,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:23:01,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:23:01,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:23:01,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:23:01,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:23:01,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:23:01,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:23:01,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:23:01,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:23:01,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:23:01,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:23:01,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:23:01,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:23:01,098 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_97b45499-7b07-47ee-8e14-a0fea99fed28/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:23:01,114 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:23:01,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:23:01,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:23:01,115 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:23:01,116 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:23:01,116 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:23:01,116 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:23:01,116 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:23:01,116 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:23:01,116 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:23:01,117 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:23:01,117 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:23:01,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:23:01,119 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:23:01,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:23:01,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:23:01,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:23:01,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:23:01,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:23:01,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:23:01,120 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:23:01,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:23:01,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:23:01,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:23:01,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:23:01,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:23:01,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:23:01,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:01,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:23:01,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:23:01,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:23:01,122 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:23:01,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:23:01,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:23:01,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:23:01,123 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/working_dir_97b45499-7b07-47ee-8e14-a0fea99fed28/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 [2019-10-22 11:23:01,158 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:23:01,168 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:23:01,171 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:23:01,172 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:23:01,172 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:23:01,173 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_97b45499-7b07-47ee-8e14-a0fea99fed28/bin/utaipan/../../sv-benchmarks/c/loops/matrix-2.c [2019-10-22 11:23:01,230 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_97b45499-7b07-47ee-8e14-a0fea99fed28/bin/utaipan/data/3a3c8521f/886202c18bca423ea952aa97000e875c/FLAG34d3db3cd [2019-10-22 11:23:01,606 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:23:01,607 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_97b45499-7b07-47ee-8e14-a0fea99fed28/sv-benchmarks/c/loops/matrix-2.c [2019-10-22 11:23:01,612 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_97b45499-7b07-47ee-8e14-a0fea99fed28/bin/utaipan/data/3a3c8521f/886202c18bca423ea952aa97000e875c/FLAG34d3db3cd [2019-10-22 11:23:02,016 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_97b45499-7b07-47ee-8e14-a0fea99fed28/bin/utaipan/data/3a3c8521f/886202c18bca423ea952aa97000e875c [2019-10-22 11:23:02,019 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:23:02,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:23:02,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:02,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:23:02,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:23:02,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:02" (1/1) ... [2019-10-22 11:23:02,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b174317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:02, skipping insertion in model container [2019-10-22 11:23:02,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:02" (1/1) ... [2019-10-22 11:23:02,037 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:23:02,054 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:23:02,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:02,215 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:23:02,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:02,310 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:23:02,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:02 WrapperNode [2019-10-22 11:23:02,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:02,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:02,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:23:02,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:23:02,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:02" (1/1) ... [2019-10-22 11:23:02,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:02" (1/1) ... [2019-10-22 11:23:02,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:02,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:23:02,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:23:02,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:23:02,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:02" (1/1) ... [2019-10-22 11:23:02,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:02" (1/1) ... [2019-10-22 11:23:02,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:02" (1/1) ... [2019-10-22 11:23:02,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:02" (1/1) ... [2019-10-22 11:23:02,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:02" (1/1) ... [2019-10-22 11:23:02,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:02" (1/1) ... [2019-10-22 11:23:02,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:02" (1/1) ... [2019-10-22 11:23:02,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:23:02,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:23:02,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:23:02,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:23:02,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97b45499-7b07-47ee-8e14-a0fea99fed28/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 [2019-10-22 11:23:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:23:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:23:02,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:23:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:23:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:23:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:23:02,696 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:23:02,696 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-22 11:23:02,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:02 BoogieIcfgContainer [2019-10-22 11:23:02,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:23:02,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:23:02,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:23:02,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:23:02,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:23:02" (1/3) ... [2019-10-22 11:23:02,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd1eb08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:02, skipping insertion in model container [2019-10-22 11:23:02,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:02" (2/3) ... [2019-10-22 11:23:02,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd1eb08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:02, skipping insertion in model container [2019-10-22 11:23:02,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:02" (3/3) ... [2019-10-22 11:23:02,706 INFO L109 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2019-10-22 11:23:02,716 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:23:02,723 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:23:02,736 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:23:02,783 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:23:02,783 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:23:02,783 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:23:02,783 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:23:02,784 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:23:02,784 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:23:02,784 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:23:02,784 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:23:02,810 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-22 11:23:02,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:23:02,824 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:02,825 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:02,835 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:02,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:02,840 INFO L82 PathProgramCache]: Analyzing trace with hash 228332486, now seen corresponding path program 1 times [2019-10-22 11:23:02,858 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:02,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839842025] [2019-10-22 11:23:02,860 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:02,860 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:02,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:02,955 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 11:23:02,956 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576390842] [2019-10-22 11:23:02,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97b45499-7b07-47ee-8e14-a0fea99fed28/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 [2019-10-22 11:23:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:03,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:23:03,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:03,109 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:03,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:03,155 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839842025] [2019-10-22 11:23:03,155 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 11:23:03,156 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576390842] [2019-10-22 11:23:03,156 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:03,156 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-10-22 11:23:03,157 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079364320] [2019-10-22 11:23:03,161 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:23:03,163 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:03,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:23:03,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:23:03,179 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 7 states. [2019-10-22 11:23:03,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:03,273 INFO L93 Difference]: Finished difference Result 57 states and 86 transitions. [2019-10-22 11:23:03,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:23:03,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2019-10-22 11:23:03,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:03,282 INFO L225 Difference]: With dead ends: 57 [2019-10-22 11:23:03,282 INFO L226 Difference]: Without dead ends: 29 [2019-10-22 11:23:03,285 INFO L600 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 [2019-10-22 11:23:03,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-22 11:23:03,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 17. [2019-10-22 11:23:03,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 11:23:03,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-10-22 11:23:03,319 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 8 [2019-10-22 11:23:03,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:03,319 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-10-22 11:23:03,319 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:23:03,319 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-10-22 11:23:03,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 11:23:03,320 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:03,320 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:03,520 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:23:03,521 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:03,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:03,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1185124407, now seen corresponding path program 1 times [2019-10-22 11:23:03,521 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:03,521 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116591423] [2019-10-22 11:23:03,522 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:03,522 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:03,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:03,527 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 11:23:03,537 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [729637233] [2019-10-22 11:23:03,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97b45499-7b07-47ee-8e14-a0fea99fed28/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 [2019-10-22 11:23:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:03,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:23:03,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:03,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:03,623 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:03,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:03,658 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116591423] [2019-10-22 11:23:03,658 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 11:23:03,658 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729637233] [2019-10-22 11:23:03,658 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:03,659 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-10-22 11:23:03,659 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776247132] [2019-10-22 11:23:03,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:23:03,660 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:03,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:23:03,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:23:03,661 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 7 states. [2019-10-22 11:23:03,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:03,727 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2019-10-22 11:23:03,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:23:03,727 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-10-22 11:23:03,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:03,728 INFO L225 Difference]: With dead ends: 47 [2019-10-22 11:23:03,728 INFO L226 Difference]: Without dead ends: 26 [2019-10-22 11:23:03,729 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:23:03,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-22 11:23:03,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2019-10-22 11:23:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-22 11:23:03,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2019-10-22 11:23:03,732 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2019-10-22 11:23:03,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:03,732 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2019-10-22 11:23:03,732 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:23:03,732 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2019-10-22 11:23:03,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 11:23:03,733 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:03,733 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:03,933 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:23:03,934 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:03,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:03,934 INFO L82 PathProgramCache]: Analyzing trace with hash 206458815, now seen corresponding path program 1 times [2019-10-22 11:23:03,934 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:03,934 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628470462] [2019-10-22 11:23:03,934 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:03,935 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:03,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:03,939 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 11:23:03,940 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507011588] [2019-10-22 11:23:03,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97b45499-7b07-47ee-8e14-a0fea99fed28/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 [2019-10-22 11:23:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:23:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:23:04,015 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:23:04,015 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:23:04,219 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:23:04,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:23:04 BoogieIcfgContainer [2019-10-22 11:23:04,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:23:04,258 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:23:04,258 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:23:04,258 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:23:04,259 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:02" (3/4) ... [2019-10-22 11:23:04,261 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:23:04,296 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_97b45499-7b07-47ee-8e14-a0fea99fed28/bin/utaipan/witness.graphml [2019-10-22 11:23:04,296 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:23:04,298 INFO L168 Benchmark]: Toolchain (without parser) took 2278.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.5 MB in the beginning and 1.0 GB in the end (delta: -90.7 MB). Peak memory consumption was 55.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:04,299 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:04,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -195.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:04,300 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.84 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. [2019-10-22 11:23:04,300 INFO L168 Benchmark]: Boogie Preprocessor took 28.59 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. [2019-10-22 11:23:04,300 INFO L168 Benchmark]: RCFGBuilder took 320.93 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:04,301 INFO L168 Benchmark]: TraceAbstraction took 1559.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 76.1 MB). Peak memory consumption was 76.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:04,301 INFO L168 Benchmark]: Witness Printer took 38.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:04,303 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 289.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -195.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.84 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. * Boogie Preprocessor took 28.59 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 320.93 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1559.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 76.1 MB). Peak memory consumption was 76.1 MB. Max. memory is 11.5 GB. * Witness Printer took 38.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. 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