./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/matrix_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_23686f15-74eb-4cea-9638-350abfb7d9d4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_23686f15-74eb-4cea-9638-350abfb7d9d4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_23686f15-74eb-4cea-9638-350abfb7d9d4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_23686f15-74eb-4cea-9638-350abfb7d9d4/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/matrix_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_23686f15-74eb-4cea-9638-350abfb7d9d4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_23686f15-74eb-4cea-9638-350abfb7d9d4/bin-2019/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 a06687718ac0cd281e66000f698ec14d3c3893e6 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.23-635dfa2 [2018-12-09 16:34:28,479 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 16:34:28,480 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 16:34:28,488 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 16:34:28,488 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 16:34:28,489 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 16:34:28,490 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 16:34:28,491 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 16:34:28,492 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 16:34:28,493 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 16:34:28,494 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 16:34:28,494 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 16:34:28,494 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 16:34:28,495 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 16:34:28,495 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 16:34:28,496 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 16:34:28,496 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 16:34:28,497 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 16:34:28,498 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 16:34:28,499 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 16:34:28,500 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 16:34:28,500 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 16:34:28,501 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 16:34:28,501 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 16:34:28,501 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 16:34:28,502 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 16:34:28,502 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 16:34:28,503 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 16:34:28,503 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 16:34:28,504 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 16:34:28,504 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 16:34:28,505 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 16:34:28,505 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 16:34:28,505 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 16:34:28,506 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 16:34:28,506 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 16:34:28,506 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_23686f15-74eb-4cea-9638-350abfb7d9d4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 16:34:28,516 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 16:34:28,516 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 16:34:28,517 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 16:34:28,517 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 16:34:28,517 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 16:34:28,517 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 16:34:28,517 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 16:34:28,518 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 16:34:28,518 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 16:34:28,518 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 16:34:28,518 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 16:34:28,518 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 16:34:28,518 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 16:34:28,519 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 16:34:28,519 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 16:34:28,519 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 16:34:28,519 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 16:34:28,520 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 16:34:28,520 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 16:34:28,520 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 16:34:28,520 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 16:34:28,520 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 16:34:28,520 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 16:34:28,521 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 16:34:28,521 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 16:34:28,521 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 16:34:28,521 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 16:34:28,521 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 16:34:28,521 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 16:34:28,522 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 16:34:28,522 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 16:34:28,522 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 16:34:28,522 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 16:34:28,522 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 16:34:28,522 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 16:34:28,522 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 16:34:28,523 INFO L133 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_23686f15-74eb-4cea-9638-350abfb7d9d4/bin-2019/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 -> a06687718ac0cd281e66000f698ec14d3c3893e6 [2018-12-09 16:34:28,546 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 16:34:28,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 16:34:28,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 16:34:28,556 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 16:34:28,556 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 16:34:28,557 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_23686f15-74eb-4cea-9638-350abfb7d9d4/bin-2019/utaipan/../../sv-benchmarks/c/loops/matrix_false-unreach-call_true-termination.i [2018-12-09 16:34:28,590 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_23686f15-74eb-4cea-9638-350abfb7d9d4/bin-2019/utaipan/data/6eccd1b8a/5eeb990fb46b4d61984c5b6ec116376a/FLAG0af15883e [2018-12-09 16:34:28,948 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 16:34:28,949 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_23686f15-74eb-4cea-9638-350abfb7d9d4/sv-benchmarks/c/loops/matrix_false-unreach-call_true-termination.i [2018-12-09 16:34:28,952 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_23686f15-74eb-4cea-9638-350abfb7d9d4/bin-2019/utaipan/data/6eccd1b8a/5eeb990fb46b4d61984c5b6ec116376a/FLAG0af15883e [2018-12-09 16:34:29,321 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_23686f15-74eb-4cea-9638-350abfb7d9d4/bin-2019/utaipan/data/6eccd1b8a/5eeb990fb46b4d61984c5b6ec116376a [2018-12-09 16:34:29,325 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 16:34:29,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 16:34:29,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 16:34:29,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 16:34:29,332 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 16:34:29,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:34:29" (1/1) ... [2018-12-09 16:34:29,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15319f4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:34:29, skipping insertion in model container [2018-12-09 16:34:29,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:34:29" (1/1) ... [2018-12-09 16:34:29,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 16:34:29,355 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 16:34:29,446 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:34:29,448 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 16:34:29,462 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:34:29,473 INFO L195 MainTranslator]: Completed translation [2018-12-09 16:34:29,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:34:29 WrapperNode [2018-12-09 16:34:29,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 16:34:29,473 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 16:34:29,474 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 16:34:29,474 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 16:34:29,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:34:29" (1/1) ... [2018-12-09 16:34:29,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:34:29" (1/1) ... [2018-12-09 16:34:29,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 16:34:29,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 16:34:29,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 16:34:29,487 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 16:34:29,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:34:29" (1/1) ... [2018-12-09 16:34:29,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:34:29" (1/1) ... [2018-12-09 16:34:29,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:34:29" (1/1) ... [2018-12-09 16:34:29,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:34:29" (1/1) ... [2018-12-09 16:34:29,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:34:29" (1/1) ... [2018-12-09 16:34:29,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:34:29" (1/1) ... [2018-12-09 16:34:29,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:34:29" (1/1) ... [2018-12-09 16:34:29,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 16:34:29,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 16:34:29,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 16:34:29,536 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 16:34:29,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:34:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_23686f15-74eb-4cea-9638-350abfb7d9d4/bin-2019/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 [2018-12-09 16:34:29,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 16:34:29,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 16:34:29,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 16:34:29,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 16:34:29,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 16:34:29,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 16:34:29,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 16:34:29,568 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 16:34:29,568 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 16:34:29,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 16:34:29,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 16:34:29,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 16:34:29,700 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 16:34:29,700 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 16:34:29,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:34:29 BoogieIcfgContainer [2018-12-09 16:34:29,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 16:34:29,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 16:34:29,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 16:34:29,703 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 16:34:29,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:34:29" (1/3) ... [2018-12-09 16:34:29,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe42803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:34:29, skipping insertion in model container [2018-12-09 16:34:29,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:34:29" (2/3) ... [2018-12-09 16:34:29,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe42803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:34:29, skipping insertion in model container [2018-12-09 16:34:29,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:34:29" (3/3) ... [2018-12-09 16:34:29,705 INFO L112 eAbstractionObserver]: Analyzing ICFG matrix_false-unreach-call_true-termination.i [2018-12-09 16:34:29,713 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 16:34:29,718 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 16:34:29,728 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 16:34:29,746 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 16:34:29,746 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 16:34:29,746 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 16:34:29,746 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 16:34:29,746 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 16:34:29,746 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 16:34:29,746 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 16:34:29,747 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 16:34:29,756 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-12-09 16:34:29,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 16:34:29,759 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:34:29,759 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:34:29,761 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:34:29,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:34:29,764 INFO L82 PathProgramCache]: Analyzing trace with hash -2125374060, now seen corresponding path program 1 times [2018-12-09 16:34:29,765 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:34:29,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:34:29,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:34:29,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:34:29,796 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:34:29,816 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 16:34:29,816 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 16:34:29,816 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_23686f15-74eb-4cea-9638-350abfb7d9d4/bin-2019/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 [2018-12-09 16:34:29,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:34:29,822 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 16:34:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:34:29,845 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-09 16:34:29,846 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 16:34:29,846 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:34:29,847 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_23686f15-74eb-4cea-9638-350abfb7d9d4/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 16:34:29,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:34:29,853 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 16:34:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:34:29,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:34:29,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:34:29,882 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 16:34:29,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:34:29,906 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:34:29,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-12-09 16:34:29,906 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 16:34:29,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 16:34:29,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 16:34:29,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 16:34:29,918 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2018-12-09 16:34:29,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:34:29,931 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2018-12-09 16:34:29,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 16:34:29,932 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-12-09 16:34:29,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:34:29,936 INFO L225 Difference]: With dead ends: 52 [2018-12-09 16:34:29,936 INFO L226 Difference]: Without dead ends: 24 [2018-12-09 16:34:29,938 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 16:34:29,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-09 16:34:29,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-12-09 16:34:29,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-09 16:34:29,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-12-09 16:34:29,958 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2018-12-09 16:34:29,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:34:29,958 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-12-09 16:34:29,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 16:34:29,958 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-12-09 16:34:29,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 16:34:29,959 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:34:29,959 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:34:29,959 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:34:29,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:34:29,959 INFO L82 PathProgramCache]: Analyzing trace with hash 739661195, now seen corresponding path program 1 times [2018-12-09 16:34:29,959 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:34:29,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:34:29,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:34:29,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:34:29,960 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:34:29,964 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 16:34:29,964 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 16:34:29,964 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_23686f15-74eb-4cea-9638-350abfb7d9d4/bin-2019/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 [2018-12-09 16:34:29,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:34:29,970 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 16:34:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:34:29,991 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-09 16:34:29,991 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 16:34:29,991 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:34:29,991 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_23686f15-74eb-4cea-9638-350abfb7d9d4/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 16:34:29,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:34:29,997 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 16:34:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:34:30,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:34:30,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:34:30,044 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 16:34:30,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:34:30,081 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:34:30,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-12-09 16:34:30,082 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 16:34:30,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 16:34:30,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 16:34:30,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-09 16:34:30,083 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 5 states. [2018-12-09 16:34:30,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:34:30,124 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2018-12-09 16:34:30,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 16:34:30,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-12-09 16:34:30,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:34:30,127 INFO L225 Difference]: With dead ends: 49 [2018-12-09 16:34:30,127 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 16:34:30,128 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-09 16:34:30,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 16:34:30,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 25. [2018-12-09 16:34:30,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-12-09 16:34:30,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2018-12-09 16:34:30,133 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 14 [2018-12-09 16:34:30,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:34:30,133 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2018-12-09 16:34:30,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 16:34:30,133 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2018-12-09 16:34:30,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 16:34:30,134 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:34:30,134 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:34:30,134 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:34:30,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:34:30,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1656958391, now seen corresponding path program 1 times [2018-12-09 16:34:30,134 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:34:30,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:34:30,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:34:30,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:34:30,135 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:34:30,139 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 16:34:30,139 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 16:34:30,139 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_23686f15-74eb-4cea-9638-350abfb7d9d4/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 16:34:30,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:34:30,145 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 16:34:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:34:30,174 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-12-09 16:34:30,175 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [19], [32], [36], [44], [52], [66], [69], [71], [77], [78], [79], [81] [2018-12-09 16:34:30,194 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 16:34:30,195 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 16:34:30,298 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 16:34:30,298 INFO L272 AbstractInterpreter]: Visited 17 different actions 32 times. Merged at 4 different actions 12 times. Widened at 1 different actions 1 times. Performed 144 root evaluator evaluations with a maximum evaluation depth of 4. Performed 144 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 4 fixpoints after 2 different actions. Largest state had 22 variables. [2018-12-09 16:34:30,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:34:30,303 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 16:34:30,303 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:34:30,303 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_23686f15-74eb-4cea-9638-350abfb7d9d4/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 16:34:30,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:34:30,309 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 16:34:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:34:30,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:34:30,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:34:30,332 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 16:34:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:34:30,363 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:34:30,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-12-09 16:34:30,363 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 16:34:30,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 16:34:30,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 16:34:30,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-09 16:34:30,364 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 5 states. [2018-12-09 16:34:30,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:34:30,402 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2018-12-09 16:34:30,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 16:34:30,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-12-09 16:34:30,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:34:30,403 INFO L225 Difference]: With dead ends: 57 [2018-12-09 16:34:30,403 INFO L226 Difference]: Without dead ends: 32 [2018-12-09 16:34:30,403 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-09 16:34:30,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-09 16:34:30,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2018-12-09 16:34:30,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-09 16:34:30,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2018-12-09 16:34:30,407 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 17 [2018-12-09 16:34:30,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:34:30,407 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2018-12-09 16:34:30,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 16:34:30,408 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2018-12-09 16:34:30,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 16:34:30,408 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:34:30,408 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:34:30,409 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:34:30,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:34:30,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1471852900, now seen corresponding path program 1 times [2018-12-09 16:34:30,409 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:34:30,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:34:30,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:34:30,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:34:30,410 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:34:30,414 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 16:34:30,414 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 16:34:30,414 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_23686f15-74eb-4cea-9638-350abfb7d9d4/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 16:34:30,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:34:30,420 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 16:34:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 16:34:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 16:34:30,460 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 16:34:30,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:34:30 BoogieIcfgContainer [2018-12-09 16:34:30,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 16:34:30,481 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 16:34:30,481 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 16:34:30,482 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 16:34:30,482 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:34:29" (3/4) ... [2018-12-09 16:34:30,483 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 16:34:30,517 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_23686f15-74eb-4cea-9638-350abfb7d9d4/bin-2019/utaipan/witness.graphml [2018-12-09 16:34:30,517 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 16:34:30,517 INFO L168 Benchmark]: Toolchain (without parser) took 1192.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 951.3 MB in the beginning and 1.0 GB in the end (delta: -48.7 MB). Peak memory consumption was 109.6 MB. Max. memory is 11.5 GB. [2018-12-09 16:34:30,519 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:34:30,519 INFO L168 Benchmark]: CACSL2BoogieTranslator took 145.70 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 16:34:30,519 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.67 ms. Allocated memory is still 1.0 GB. Free memory is still 940.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:34:30,520 INFO L168 Benchmark]: Boogie Preprocessor took 48.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 940.5 MB in the beginning and 1.2 GB in the end (delta: -210.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2018-12-09 16:34:30,520 INFO L168 Benchmark]: RCFGBuilder took 164.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2018-12-09 16:34:30,520 INFO L168 Benchmark]: TraceAbstraction took 779.95 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: 125.8 MB). Peak memory consumption was 125.8 MB. Max. memory is 11.5 GB. [2018-12-09 16:34:30,521 INFO L168 Benchmark]: Witness Printer took 35.47 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. [2018-12-09 16:34:30,523 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 145.70 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.67 ms. Allocated memory is still 1.0 GB. Free memory is still 940.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 48.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 940.5 MB in the beginning and 1.2 GB in the end (delta: -210.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 164.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 779.95 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: 125.8 MB). Peak memory consumption was 125.8 MB. Max. memory is 11.5 GB. * Witness Printer took 35.47 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 VAL [j=0, maior=-2147479327, matriz={6:0}, N_COL=1, N_LIN=1] [L20] COND TRUE jmaior [L26] EXPR matriz[j][k] [L26] maior = matriz[j][k] [L21] k++ VAL [j=0, k=1, maior=-2147479326, matriz={6:0}, N_COL=1, N_LIN=1] [L21] COND FALSE !(k