./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 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bbb41738-aced-4de8-87da-8b660ca25089/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_bbb41738-aced-4de8-87da-8b660ca25089/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bbb41738-aced-4de8-87da-8b660ca25089/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bbb41738-aced-4de8-87da-8b660ca25089/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/matrix-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bbb41738-aced-4de8-87da-8b660ca25089/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bbb41738-aced-4de8-87da-8b660ca25089/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d5a6ec162428ec37050a5f893bf0066c8b3fd7be ...................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:51:15,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:51:15,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:51:15,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:51:15,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:51:15,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:51:15,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:51:15,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:51:15,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:51:15,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:51:15,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:51:15,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:51:15,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:51:15,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:51:15,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:51:15,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:51:15,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:51:15,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:51:15,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:51:15,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:51:15,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:51:15,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:51:15,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:51:15,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:51:15,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:51:15,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:51:15,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:51:15,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:51:15,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:51:15,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:51:15,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:51:15,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:51:15,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:51:15,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:51:15,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:51:15,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:51:15,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:51:15,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:51:15,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:51:15,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:51:15,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:51:15,434 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bbb41738-aced-4de8-87da-8b660ca25089/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:51:15,446 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:51:15,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:51:15,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:51:15,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:51:15,451 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:51:15,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:51:15,451 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:51:15,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:51:15,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:51:15,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:51:15,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:51:15,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:51:15,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:51:15,454 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:51:15,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:51:15,454 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:51:15,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:51:15,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:51:15,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:51:15,455 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:51:15,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:51:15,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:51:15,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:51:15,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:51:15,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:51:15,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:51:15,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:51:15,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:51:15,457 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bbb41738-aced-4de8-87da-8b660ca25089/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5a6ec162428ec37050a5f893bf0066c8b3fd7be [2019-11-25 08:51:15,646 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:51:15,655 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:51:15,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:51:15,660 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:51:15,660 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:51:15,661 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bbb41738-aced-4de8-87da-8b660ca25089/bin/uautomizer/../../sv-benchmarks/c/loops/matrix-2.c [2019-11-25 08:51:15,710 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bbb41738-aced-4de8-87da-8b660ca25089/bin/uautomizer/data/721b59cb1/3d4ec33b2a394a838a6fbb6c44effdb4/FLAG8329f6747 [2019-11-25 08:51:16,029 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:51:16,029 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bbb41738-aced-4de8-87da-8b660ca25089/sv-benchmarks/c/loops/matrix-2.c [2019-11-25 08:51:16,034 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bbb41738-aced-4de8-87da-8b660ca25089/bin/uautomizer/data/721b59cb1/3d4ec33b2a394a838a6fbb6c44effdb4/FLAG8329f6747 [2019-11-25 08:51:16,448 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bbb41738-aced-4de8-87da-8b660ca25089/bin/uautomizer/data/721b59cb1/3d4ec33b2a394a838a6fbb6c44effdb4 [2019-11-25 08:51:16,451 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:51:16,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:51:16,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:51:16,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:51:16,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:51:16,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:51:16" (1/1) ... [2019-11-25 08:51:16,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@650942c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:16, skipping insertion in model container [2019-11-25 08:51:16,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:51:16" (1/1) ... [2019-11-25 08:51:16,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:51:16,485 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:51:16,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:51:16,693 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:51:16,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:51:16,798 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:51:16,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:16 WrapperNode [2019-11-25 08:51:16,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:51:16,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:51:16,800 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:51:16,800 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:51:16,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:16" (1/1) ... [2019-11-25 08:51:16,825 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:16" (1/1) ... [2019-11-25 08:51:16,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:51:16,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:51:16,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:51:16,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:51:16,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:16" (1/1) ... [2019-11-25 08:51:16,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:16" (1/1) ... [2019-11-25 08:51:16,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:16" (1/1) ... [2019-11-25 08:51:16,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:16" (1/1) ... [2019-11-25 08:51:16,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:16" (1/1) ... [2019-11-25 08:51:16,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:16" (1/1) ... [2019-11-25 08:51:16,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:16" (1/1) ... [2019-11-25 08:51:16,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:51:16,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:51:16,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:51:16,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:51:16,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bbb41738-aced-4de8-87da-8b660ca25089/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:51:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:51:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:51:16,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:51:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:51:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:51:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:51:17,292 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:51:17,292 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-25 08:51:17,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:51:17 BoogieIcfgContainer [2019-11-25 08:51:17,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:51:17,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:51:17,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:51:17,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:51:17,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:51:16" (1/3) ... [2019-11-25 08:51:17,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206081ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:51:17, skipping insertion in model container [2019-11-25 08:51:17,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:16" (2/3) ... [2019-11-25 08:51:17,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206081ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:51:17, skipping insertion in model container [2019-11-25 08:51:17,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:51:17" (3/3) ... [2019-11-25 08:51:17,305 INFO L109 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2019-11-25 08:51:17,315 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:51:17,322 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:51:17,333 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:51:17,354 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:51:17,355 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:51:17,355 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:51:17,355 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:51:17,355 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:51:17,355 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:51:17,355 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:51:17,356 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:51:17,369 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-25 08:51:17,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-25 08:51:17,374 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:51:17,375 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:51:17,376 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:51:17,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:17,381 INFO L82 PathProgramCache]: Analyzing trace with hash 228332486, now seen corresponding path program 1 times [2019-11-25 08:51:17,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:17,389 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888098650] [2019-11-25 08:51:17,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:17,470 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-25 08:51:17,470 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1853358067] [2019-11-25 08:51:17,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bbb41738-aced-4de8-87da-8b660ca25089/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:17,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:51:17,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:17,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:17,612 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888098650] [2019-11-25 08:51:17,612 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-25 08:51:17,612 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853358067] [2019-11-25 08:51:17,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:51:17,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:51:17,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199178927] [2019-11-25 08:51:17,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:51:17,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:17,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:51:17,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:51:17,632 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2019-11-25 08:51:17,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:17,735 INFO L93 Difference]: Finished difference Result 57 states and 86 transitions. [2019-11-25 08:51:17,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:51:17,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-25 08:51:17,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:51:17,748 INFO L225 Difference]: With dead ends: 57 [2019-11-25 08:51:17,748 INFO L226 Difference]: Without dead ends: 29 [2019-11-25 08:51:17,751 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:51:17,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-25 08:51:17,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 17. [2019-11-25 08:51:17,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-25 08:51:17,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-11-25 08:51:17,786 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 8 [2019-11-25 08:51:17,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:51:17,786 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-25 08:51:17,786 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:51:17,787 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-11-25 08:51:17,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:51:17,788 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:51:17,788 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:51:17,992 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:17,994 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:51:17,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:17,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1185124407, now seen corresponding path program 1 times [2019-11-25 08:51:17,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:17,995 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394422945] [2019-11-25 08:51:17,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:18,001 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-25 08:51:18,002 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911562662] [2019-11-25 08:51:18,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bbb41738-aced-4de8-87da-8b660ca25089/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:18,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:51:18,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:18,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:18,115 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394422945] [2019-11-25 08:51:18,115 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-25 08:51:18,116 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911562662] [2019-11-25 08:51:18,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:51:18,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:51:18,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395383204] [2019-11-25 08:51:18,117 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:51:18,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:18,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:51:18,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:51:18,118 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 5 states. [2019-11-25 08:51:18,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:18,197 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2019-11-25 08:51:18,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:51:18,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-25 08:51:18,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:51:18,198 INFO L225 Difference]: With dead ends: 47 [2019-11-25 08:51:18,198 INFO L226 Difference]: Without dead ends: 26 [2019-11-25 08:51:18,199 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:51:18,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-25 08:51:18,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2019-11-25 08:51:18,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-25 08:51:18,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2019-11-25 08:51:18,203 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2019-11-25 08:51:18,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:51:18,203 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2019-11-25 08:51:18,203 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:51:18,204 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2019-11-25 08:51:18,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:51:18,204 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:51:18,204 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:51:18,405 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:18,405 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:51:18,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:18,405 INFO L82 PathProgramCache]: Analyzing trace with hash 206458815, now seen corresponding path program 1 times [2019-11-25 08:51:18,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:18,406 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826630015] [2019-11-25 08:51:18,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:18,410 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-25 08:51:18,410 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [783494445] [2019-11-25 08:51:18,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bbb41738-aced-4de8-87da-8b660ca25089/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:18,492 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:18,492 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:51:18,696 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:18,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:51:18 BoogieIcfgContainer [2019-11-25 08:51:18,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:51:18,719 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:51:18,719 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:51:18,719 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:51:18,720 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:51:17" (3/4) ... [2019-11-25 08:51:18,721 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:51:18,760 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bbb41738-aced-4de8-87da-8b660ca25089/bin/uautomizer/witness.graphml [2019-11-25 08:51:18,760 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:51:18,762 INFO L168 Benchmark]: Toolchain (without parser) took 2309.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 950.1 MB in the beginning and 1.0 GB in the end (delta: -92.4 MB). Peak memory consumption was 59.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:18,762 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:51:18,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -191.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:18,763 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:51:18,763 INFO L168 Benchmark]: Boogie Preprocessor took 46.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:51:18,764 INFO L168 Benchmark]: RCFGBuilder took 388.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:18,764 INFO L168 Benchmark]: TraceAbstraction took 1424.50 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: 65.9 MB). Peak memory consumption was 65.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:18,765 INFO L168 Benchmark]: Witness Printer took 41.01 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:18,767 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 342.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -191.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 58.35 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 46.38 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 388.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1424.50 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: 65.9 MB). Peak memory consumption was 65.9 MB. Max. memory is 11.5 GB. * Witness Printer took 41.01 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: 6.5 MB). Peak memory consumption was 6.5 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