./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/mult_array-alloca_true-valid-memsafety_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/mult_array-alloca_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f9c03ff796f05925e62ae0f4fb320e42fa8b7c37 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 08:12:46,560 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 08:12:46,561 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 08:12:46,567 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 08:12:46,567 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 08:12:46,568 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 08:12:46,568 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 08:12:46,569 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 08:12:46,570 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 08:12:46,570 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 08:12:46,571 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 08:12:46,571 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 08:12:46,571 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 08:12:46,572 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 08:12:46,572 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 08:12:46,573 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 08:12:46,573 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 08:12:46,574 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 08:12:46,575 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 08:12:46,576 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 08:12:46,576 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 08:12:46,577 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 08:12:46,578 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 08:12:46,578 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 08:12:46,578 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 08:12:46,579 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 08:12:46,579 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 08:12:46,580 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 08:12:46,580 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 08:12:46,581 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 08:12:46,581 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 08:12:46,581 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 08:12:46,581 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 08:12:46,581 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 08:12:46,582 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 08:12:46,582 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 08:12:46,582 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-02 08:12:46,590 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 08:12:46,590 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 08:12:46,590 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 08:12:46,590 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 08:12:46,591 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 08:12:46,591 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 08:12:46,591 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 08:12:46,591 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 08:12:46,591 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 08:12:46,591 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 08:12:46,591 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 08:12:46,591 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 08:12:46,591 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 08:12:46,592 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 08:12:46,592 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 08:12:46,592 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 08:12:46,592 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 08:12:46,592 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 08:12:46,592 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 08:12:46,592 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 08:12:46,592 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 08:12:46,592 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-02 08:12:46,592 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-02 08:12:46,593 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-02 08:12:46,593 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 08:12:46,593 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 08:12:46,593 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 08:12:46,593 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 08:12:46,593 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 08:12:46,593 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 08:12:46,593 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 08:12:46,593 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 08:12:46,593 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 08:12:46,593 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 08:12:46,594 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 08:12:46,594 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 08:12:46,594 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_ad355e0c-b680-46a1-b770-36e1a411f540/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> f9c03ff796f05925e62ae0f4fb320e42fa8b7c37 [2018-12-02 08:12:46,611 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 08:12:46,618 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 08:12:46,620 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 08:12:46,621 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 08:12:46,621 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 08:12:46,621 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/../../sv-benchmarks/c/array-memsafety/mult_array-alloca_true-valid-memsafety_true-termination.i [2018-12-02 08:12:46,657 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/data/38556d457/53211c64c1a04ea1a34b1a86d83e5e21/FLAGd6c3b0354 [2018-12-02 08:12:47,130 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 08:12:47,130 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/sv-benchmarks/c/array-memsafety/mult_array-alloca_true-valid-memsafety_true-termination.i [2018-12-02 08:12:47,136 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/data/38556d457/53211c64c1a04ea1a34b1a86d83e5e21/FLAGd6c3b0354 [2018-12-02 08:12:47,145 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/data/38556d457/53211c64c1a04ea1a34b1a86d83e5e21 [2018-12-02 08:12:47,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 08:12:47,148 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 08:12:47,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 08:12:47,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 08:12:47,150 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 08:12:47,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:12:47" (1/1) ... [2018-12-02 08:12:47,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8167c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:47, skipping insertion in model container [2018-12-02 08:12:47,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:12:47" (1/1) ... [2018-12-02 08:12:47,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 08:12:47,175 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 08:12:47,317 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 08:12:47,324 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 08:12:47,380 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 08:12:47,398 INFO L195 MainTranslator]: Completed translation [2018-12-02 08:12:47,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:47 WrapperNode [2018-12-02 08:12:47,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 08:12:47,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 08:12:47,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 08:12:47,399 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 08:12:47,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:47" (1/1) ... [2018-12-02 08:12:47,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:47" (1/1) ... [2018-12-02 08:12:47,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 08:12:47,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 08:12:47,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 08:12:47,416 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 08:12:47,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:47" (1/1) ... [2018-12-02 08:12:47,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:47" (1/1) ... [2018-12-02 08:12:47,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:47" (1/1) ... [2018-12-02 08:12:47,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:47" (1/1) ... [2018-12-02 08:12:47,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:47" (1/1) ... [2018-12-02 08:12:47,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:47" (1/1) ... [2018-12-02 08:12:47,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:47" (1/1) ... [2018-12-02 08:12:47,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 08:12:47,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 08:12:47,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 08:12:47,432 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 08:12:47,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/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 [2018-12-02 08:12:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 08:12:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 08:12:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 08:12:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 08:12:47,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 08:12:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 08:12:47,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 08:12:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 08:12:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 08:12:47,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 08:12:47,625 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 08:12:47,625 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-02 08:12:47,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:12:47 BoogieIcfgContainer [2018-12-02 08:12:47,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 08:12:47,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 08:12:47,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 08:12:47,628 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 08:12:47,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:12:47" (1/3) ... [2018-12-02 08:12:47,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3fd305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:12:47, skipping insertion in model container [2018-12-02 08:12:47,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:47" (2/3) ... [2018-12-02 08:12:47,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3fd305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:12:47, skipping insertion in model container [2018-12-02 08:12:47,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:12:47" (3/3) ... [2018-12-02 08:12:47,630 INFO L112 eAbstractionObserver]: Analyzing ICFG mult_array-alloca_true-valid-memsafety_true-termination.i [2018-12-02 08:12:47,636 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 08:12:47,641 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-12-02 08:12:47,650 INFO L257 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2018-12-02 08:12:47,664 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 08:12:47,665 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-02 08:12:47,665 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 08:12:47,665 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 08:12:47,665 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 08:12:47,665 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 08:12:47,665 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 08:12:47,665 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 08:12:47,674 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-12-02 08:12:47,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-02 08:12:47,679 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:12:47,680 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:12:47,681 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-02 08:12:47,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:12:47,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1464982835, now seen corresponding path program 1 times [2018-12-02 08:12:47,685 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 08:12:47,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:47,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:47,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:47,713 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 08:12:47,736 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:12:47,736 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:12:47,736 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/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 [2018-12-02 08:12:47,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:47,743 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-02 08:12:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:47,769 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-02 08:12:47,770 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-02 08:12:47,770 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:12:47,770 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/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 [2018-12-02 08:12:47,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:47,776 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 08:12:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:47,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:12:47,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:12:47,820 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 08:12:47,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:12:47,847 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:12:47,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-12-02 08:12:47,847 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 08:12:47,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 08:12:47,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 08:12:47,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 08:12:47,860 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2018-12-02 08:12:47,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:12:47,885 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2018-12-02 08:12:47,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 08:12:47,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-12-02 08:12:47,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:12:47,892 INFO L225 Difference]: With dead ends: 33 [2018-12-02 08:12:47,892 INFO L226 Difference]: Without dead ends: 30 [2018-12-02 08:12:47,893 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 08:12:47,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-02 08:12:47,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-12-02 08:12:47,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-02 08:12:47,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2018-12-02 08:12:47,917 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2018-12-02 08:12:47,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:12:47,917 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2018-12-02 08:12:47,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 08:12:47,917 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2018-12-02 08:12:47,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 08:12:47,917 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:12:47,917 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:12:47,918 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-02 08:12:47,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:12:47,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1830172400, now seen corresponding path program 1 times [2018-12-02 08:12:47,918 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 08:12:47,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:47,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:47,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:47,919 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 08:12:47,925 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:12:47,925 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:12:47,926 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/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 [2018-12-02 08:12:47,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:47,934 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-02 08:12:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:47,957 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-02 08:12:47,957 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-02 08:12:47,957 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:12:47,957 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/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 [2018-12-02 08:12:47,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:47,963 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 08:12:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:47,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:12:48,001 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 08:12:48,004 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 27 [2018-12-02 08:12:48,008 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-12-02 08:12:48,008 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 08:12:48,018 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 08:12:48,021 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 08:12:48,022 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:18, output treesize:15 [2018-12-02 08:12:48,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:12:48,036 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 08:12:48,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:12:48,062 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:12:48,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-12-02 08:12:48,062 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 08:12:48,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 08:12:48,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 08:12:48,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-02 08:12:48,063 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 3 states. [2018-12-02 08:12:48,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:12:48,078 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2018-12-02 08:12:48,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 08:12:48,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-12-02 08:12:48,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:12:48,079 INFO L225 Difference]: With dead ends: 28 [2018-12-02 08:12:48,079 INFO L226 Difference]: Without dead ends: 28 [2018-12-02 08:12:48,080 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-02 08:12:48,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-02 08:12:48,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-02 08:12:48,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-02 08:12:48,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-12-02 08:12:48,082 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2018-12-02 08:12:48,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:12:48,082 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-12-02 08:12:48,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 08:12:48,083 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-12-02 08:12:48,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 08:12:48,083 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:12:48,083 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:12:48,083 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-02 08:12:48,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:12:48,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1830172399, now seen corresponding path program 1 times [2018-12-02 08:12:48,084 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 08:12:48,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:48,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:48,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:48,085 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 08:12:48,089 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:12:48,089 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:12:48,089 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/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 [2018-12-02 08:12:48,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:48,095 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-02 08:12:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:48,114 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-02 08:12:48,114 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-02 08:12:48,114 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:12:48,114 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/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 [2018-12-02 08:12:48,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:48,121 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 08:12:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:48,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:12:48,144 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2018-12-02 08:12:48,144 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 08:12:48,151 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2018-12-02 08:12:48,155 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 17 [2018-12-02 08:12:48,155 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 08:12:48,161 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 08:12:48,168 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-12-02 08:12:48,168 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:23, output treesize:20 [2018-12-02 08:12:48,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:12:48,193 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 08:12:48,225 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2018-12-02 08:12:48,225 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 08:12:48,229 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2018-12-02 08:12:48,244 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 5 [2018-12-02 08:12:48,244 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 08:12:48,245 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-12-02 08:12:48,245 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 08:12:48,249 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 08:12:48,252 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 08:12:48,253 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:27, output treesize:5 [2018-12-02 08:12:48,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:12:48,277 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:12:48,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2018-12-02 08:12:48,277 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 08:12:48,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 08:12:48,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 08:12:48,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-12-02 08:12:48,278 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2018-12-02 08:12:48,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:12:48,343 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2018-12-02 08:12:48,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 08:12:48,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-12-02 08:12:48,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:12:48,344 INFO L225 Difference]: With dead ends: 50 [2018-12-02 08:12:48,344 INFO L226 Difference]: Without dead ends: 50 [2018-12-02 08:12:48,344 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-12-02 08:12:48,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-12-02 08:12:48,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2018-12-02 08:12:48,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-02 08:12:48,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-02 08:12:48,349 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 13 [2018-12-02 08:12:48,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:12:48,349 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-02 08:12:48,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 08:12:48,350 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-02 08:12:48,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 08:12:48,350 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:12:48,350 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:12:48,350 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-02 08:12:48,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:12:48,350 INFO L82 PathProgramCache]: Analyzing trace with hash -55165037, now seen corresponding path program 1 times [2018-12-02 08:12:48,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 08:12:48,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:48,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:48,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:48,351 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 08:12:48,357 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:12:48,357 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:12:48,357 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/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 [2018-12-02 08:12:48,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:48,363 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-02 08:12:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:48,383 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-02 08:12:48,383 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-02 08:12:48,383 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:12:48,384 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:12:48,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:48,390 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 08:12:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:48,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:12:48,427 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2018-12-02 08:12:48,428 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 08:12:48,440 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-12-02 08:12:48,443 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 21 [2018-12-02 08:12:48,444 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 08:12:48,449 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 08:12:48,458 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-12-02 08:12:48,458 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:30, output treesize:27 [2018-12-02 08:12:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:12:48,476 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 08:12:48,503 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2018-12-02 08:12:48,503 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 08:12:48,508 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2018-12-02 08:12:48,521 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 5 [2018-12-02 08:12:48,521 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 08:12:48,522 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-12-02 08:12:48,522 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 08:12:48,531 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 08:12:48,534 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 08:12:48,534 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:27, output treesize:5 [2018-12-02 08:12:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:12:48,554 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:12:48,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2018-12-02 08:12:48,554 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 08:12:48,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 08:12:48,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 08:12:48,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-02 08:12:48,555 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 5 states. [2018-12-02 08:12:48,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:12:48,616 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2018-12-02 08:12:48,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 08:12:48,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-12-02 08:12:48,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:12:48,616 INFO L225 Difference]: With dead ends: 50 [2018-12-02 08:12:48,617 INFO L226 Difference]: Without dead ends: 50 [2018-12-02 08:12:48,617 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-12-02 08:12:48,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-12-02 08:12:48,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2018-12-02 08:12:48,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-12-02 08:12:48,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2018-12-02 08:12:48,620 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 13 [2018-12-02 08:12:48,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:12:48,620 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2018-12-02 08:12:48,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 08:12:48,620 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2018-12-02 08:12:48,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-02 08:12:48,620 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:12:48,620 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:12:48,621 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-02 08:12:48,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:12:48,621 INFO L82 PathProgramCache]: Analyzing trace with hash 130097492, now seen corresponding path program 1 times [2018-12-02 08:12:48,621 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 08:12:48,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:48,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:48,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:48,622 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 08:12:48,627 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:12:48,627 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:12:48,627 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 08:12:48,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:48,634 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-02 08:12:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:48,655 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-12-02 08:12:48,657 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [8], [12], [17], [19], [23], [31], [32], [34], [35], [37], [65], [66], [67] [2018-12-02 08:12:48,676 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 08:12:48,676 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 08:12:48,760 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 08:12:48,761 INFO L272 AbstractInterpreter]: Visited 16 different actions 17 times. Merged at 1 different actions 1 times. Never widened. Performed 106 root evaluator evaluations with a maximum evaluation depth of 4. Performed 106 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-12-02 08:12:48,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:12:48,767 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 08:12:48,767 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:12:48,767 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:12:48,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:48,772 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 08:12:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:48,782 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:12:48,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:12:48,810 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 08:12:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:12:48,843 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:12:48,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-12-02 08:12:48,843 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 08:12:48,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 08:12:48,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 08:12:48,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-12-02 08:12:48,844 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 5 states. [2018-12-02 08:12:48,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:12:48,873 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2018-12-02 08:12:48,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 08:12:48,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-12-02 08:12:48,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:12:48,874 INFO L225 Difference]: With dead ends: 50 [2018-12-02 08:12:48,874 INFO L226 Difference]: Without dead ends: 50 [2018-12-02 08:12:48,875 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-12-02 08:12:48,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-12-02 08:12:48,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2018-12-02 08:12:48,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-02 08:12:48,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2018-12-02 08:12:48,877 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 17 [2018-12-02 08:12:48,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:12:48,877 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2018-12-02 08:12:48,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 08:12:48,878 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-12-02 08:12:48,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-02 08:12:48,878 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:12:48,878 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:12:48,878 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-02 08:12:48,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:12:48,879 INFO L82 PathProgramCache]: Analyzing trace with hash 831162070, now seen corresponding path program 1 times [2018-12-02 08:12:48,879 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 08:12:48,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:48,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:48,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:48,880 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 08:12:48,883 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:12:48,883 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:12:48,884 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 08:12:48,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:48,890 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-02 08:12:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:48,909 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-12-02 08:12:48,909 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [10], [12], [17], [19], [23], [31], [32], [34], [35], [37], [65], [66], [67] [2018-12-02 08:12:48,910 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 08:12:48,911 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 08:12:48,965 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 08:12:48,965 INFO L272 AbstractInterpreter]: Visited 16 different actions 31 times. Merged at 5 different actions 15 times. Never widened. Performed 194 root evaluator evaluations with a maximum evaluation depth of 4. Performed 194 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-12-02 08:12:48,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:12:48,967 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 08:12:48,967 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:12:48,967 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:12:48,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:48,973 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 08:12:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:48,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:12:48,993 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2018-12-02 08:12:48,994 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 08:12:48,999 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-12-02 08:12:49,002 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 21 [2018-12-02 08:12:49,002 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 08:12:49,006 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 08:12:49,010 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-12-02 08:12:49,010 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:27, output treesize:24 [2018-12-02 08:12:49,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:12:49,059 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 08:12:49,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:12:49,140 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 08:12:49,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2018-12-02 08:12:49,140 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-02 08:12:49,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-02 08:12:49,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-02 08:12:49,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-12-02 08:12:49,140 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 10 states. [2018-12-02 08:12:50,153 WARN L180 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2018-12-02 08:12:50,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:12:50,373 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-12-02 08:12:50,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 08:12:50,374 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-12-02 08:12:50,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:12:50,374 INFO L225 Difference]: With dead ends: 46 [2018-12-02 08:12:50,374 INFO L226 Difference]: Without dead ends: 46 [2018-12-02 08:12:50,374 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-12-02 08:12:50,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-02 08:12:50,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-12-02 08:12:50,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-02 08:12:50,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-12-02 08:12:50,377 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 17 [2018-12-02 08:12:50,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:12:50,378 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-12-02 08:12:50,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-02 08:12:50,378 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-12-02 08:12:50,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 08:12:50,378 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:12:50,379 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:12:50,379 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-02 08:12:50,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:12:50,379 INFO L82 PathProgramCache]: Analyzing trace with hash -117219070, now seen corresponding path program 1 times [2018-12-02 08:12:50,379 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 08:12:50,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:50,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:50,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:50,380 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 08:12:50,383 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:12:50,383 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:12:50,383 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 08:12:50,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:50,392 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-02 08:12:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:50,420 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-12-02 08:12:50,420 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [10], [12], [17], [19], [23], [29], [31], [32], [35], [37], [41], [49], [52], [65], [66], [67] [2018-12-02 08:12:50,421 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 08:12:50,421 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 08:12:50,509 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 08:12:50,510 INFO L272 AbstractInterpreter]: Visited 19 different actions 35 times. Merged at 8 different actions 16 times. Never widened. Performed 188 root evaluator evaluations with a maximum evaluation depth of 10. Performed 188 inverse root evaluator evaluations with a maximum inverse evaluation depth of 10. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-12-02 08:12:50,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:12:50,511 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 08:12:50,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:12:50,512 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:12:50,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:50,518 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 08:12:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:50,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:12:50,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:12:50,602 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 08:12:50,718 WARN L180 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2018-12-02 08:12:50,821 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 42 [2018-12-02 08:12:50,822 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 08:12:50,869 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2018-12-02 08:12:50,869 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 08:12:50,895 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2018-12-02 08:12:50,895 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 08:12:50,916 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2018-12-02 08:12:50,917 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 08:12:50,927 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 08:12:50,928 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:272, output treesize:37 [2018-12-02 08:12:50,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:12:51,004 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 08:12:51,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-12-02 08:12:51,004 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-02 08:12:51,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-02 08:12:51,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-02 08:12:51,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2018-12-02 08:12:51,005 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 14 states. [2018-12-02 08:12:51,315 WARN L180 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 36 [2018-12-02 08:12:51,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:12:51,455 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2018-12-02 08:12:51,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-02 08:12:51,456 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 19 [2018-12-02 08:12:51,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:12:51,456 INFO L225 Difference]: With dead ends: 73 [2018-12-02 08:12:51,457 INFO L226 Difference]: Without dead ends: 73 [2018-12-02 08:12:51,457 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2018-12-02 08:12:51,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-12-02 08:12:51,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 36. [2018-12-02 08:12:51,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-02 08:12:51,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-12-02 08:12:51,459 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 19 [2018-12-02 08:12:51,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:12:51,460 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-12-02 08:12:51,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-02 08:12:51,460 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-12-02 08:12:51,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-02 08:12:51,460 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:12:51,460 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] [2018-12-02 08:12:51,460 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-02 08:12:51,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:12:51,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1672293368, now seen corresponding path program 1 times [2018-12-02 08:12:51,461 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 08:12:51,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:51,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:51,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:51,461 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 08:12:51,466 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:12:51,466 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:12:51,466 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 08:12:51,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:51,473 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-02 08:12:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:51,492 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-12-02 08:12:51,492 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [8], [12], [17], [19], [23], [29], [31], [32], [35], [37], [41], [49], [50], [54], [65], [66], [67] [2018-12-02 08:12:51,493 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 08:12:51,493 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 08:12:51,516 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 08:12:51,516 INFO L272 AbstractInterpreter]: Visited 20 different actions 22 times. Merged at 1 different actions 1 times. Never widened. Performed 121 root evaluator evaluations with a maximum evaluation depth of 10. Performed 121 inverse root evaluator evaluations with a maximum inverse evaluation depth of 10. Found 1 fixpoints after 1 different actions. Largest state had 27 variables. [2018-12-02 08:12:51,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:12:51,517 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 08:12:51,517 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:12:51,517 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:12:51,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:51,530 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 08:12:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:51,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:12:51,545 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-12-02 08:12:51,548 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-12-02 08:12:51,549 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 08:12:51,558 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 08:12:51,565 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 08:12:51,565 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2018-12-02 08:12:51,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 08:12:51,575 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 08:12:51,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 08:12:51,604 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:12:51,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-12-02 08:12:51,604 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 08:12:51,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 08:12:51,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 08:12:51,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 08:12:51,604 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 3 states. [2018-12-02 08:12:51,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:12:51,615 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2018-12-02 08:12:51,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 08:12:51,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-12-02 08:12:51,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:12:51,616 INFO L225 Difference]: With dead ends: 35 [2018-12-02 08:12:51,616 INFO L226 Difference]: Without dead ends: 35 [2018-12-02 08:12:51,617 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 08:12:51,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-02 08:12:51,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-02 08:12:51,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-02 08:12:51,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2018-12-02 08:12:51,619 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 20 [2018-12-02 08:12:51,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:12:51,619 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2018-12-02 08:12:51,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 08:12:51,619 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2018-12-02 08:12:51,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-02 08:12:51,620 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:12:51,620 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] [2018-12-02 08:12:51,620 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-02 08:12:51,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:12:51,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1672293369, now seen corresponding path program 1 times [2018-12-02 08:12:51,620 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 08:12:51,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:51,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:51,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:51,621 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 08:12:51,625 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:12:51,625 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:12:51,625 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 08:12:51,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:51,634 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-02 08:12:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:51,664 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-12-02 08:12:51,665 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [8], [12], [17], [19], [23], [29], [31], [32], [35], [37], [41], [49], [50], [55], [65], [66], [67] [2018-12-02 08:12:51,666 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 08:12:51,666 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 08:12:51,694 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 08:12:51,694 INFO L272 AbstractInterpreter]: Visited 20 different actions 22 times. Merged at 1 different actions 1 times. Never widened. Performed 122 root evaluator evaluations with a maximum evaluation depth of 10. Performed 122 inverse root evaluator evaluations with a maximum inverse evaluation depth of 10. Found 1 fixpoints after 1 different actions. Largest state had 27 variables. [2018-12-02 08:12:51,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:12:51,695 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 08:12:51,696 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:12:51,696 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:12:51,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:51,704 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 08:12:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:51,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:12:51,716 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-12-02 08:12:51,732 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 21 [2018-12-02 08:12:51,733 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-12-02 08:12:51,752 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 08:12:51,762 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-12-02 08:12:51,762 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:34 [2018-12-02 08:12:51,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 08:12:51,784 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 08:12:51,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 08:12:51,836 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:12:51,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2018-12-02 08:12:51,836 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 08:12:51,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 08:12:51,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 08:12:51,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-12-02 08:12:51,837 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2018-12-02 08:12:51,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:12:51,866 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2018-12-02 08:12:51,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 08:12:51,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-12-02 08:12:51,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:12:51,867 INFO L225 Difference]: With dead ends: 34 [2018-12-02 08:12:51,867 INFO L226 Difference]: Without dead ends: 34 [2018-12-02 08:12:51,867 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-12-02 08:12:51,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-02 08:12:51,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-02 08:12:51,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-02 08:12:51,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-12-02 08:12:51,869 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 20 [2018-12-02 08:12:51,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:12:51,870 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-12-02 08:12:51,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 08:12:51,870 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-12-02 08:12:51,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-02 08:12:51,870 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:12:51,870 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] [2018-12-02 08:12:51,870 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-02 08:12:51,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:12:51,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1672291828, now seen corresponding path program 1 times [2018-12-02 08:12:51,871 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 08:12:51,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:51,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:51,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:51,871 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 08:12:51,874 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:12:51,874 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:12:51,874 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 08:12:51,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:51,884 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-02 08:12:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:51,902 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-12-02 08:12:51,903 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [8], [12], [17], [19], [23], [29], [31], [32], [35], [37], [41], [47], [62], [64], [65], [66], [67] [2018-12-02 08:12:51,903 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 08:12:51,903 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 08:12:51,914 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 08:12:51,914 INFO L272 AbstractInterpreter]: Visited 20 different actions 22 times. Merged at 1 different actions 1 times. Never widened. Performed 117 root evaluator evaluations with a maximum evaluation depth of 4. Performed 117 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 27 variables. [2018-12-02 08:12:51,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:12:51,915 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 08:12:51,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:12:51,915 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:12:51,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:51,921 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 08:12:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:51,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:12:51,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 08:12:51,940 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 08:12:51,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 08:12:51,980 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:12:51,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-12-02 08:12:51,980 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 08:12:51,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 08:12:51,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 08:12:51,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-12-02 08:12:51,981 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2018-12-02 08:12:52,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:12:52,004 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2018-12-02 08:12:52,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 08:12:52,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-12-02 08:12:52,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:12:52,005 INFO L225 Difference]: With dead ends: 48 [2018-12-02 08:12:52,005 INFO L226 Difference]: Without dead ends: 48 [2018-12-02 08:12:52,005 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-12-02 08:12:52,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-02 08:12:52,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 36. [2018-12-02 08:12:52,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-02 08:12:52,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-12-02 08:12:52,006 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 20 [2018-12-02 08:12:52,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:12:52,006 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-12-02 08:12:52,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 08:12:52,007 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-12-02 08:12:52,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-02 08:12:52,007 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:12:52,007 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] [2018-12-02 08:12:52,007 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-02 08:12:52,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:12:52,007 INFO L82 PathProgramCache]: Analyzing trace with hash 661174578, now seen corresponding path program 1 times [2018-12-02 08:12:52,007 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 08:12:52,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:52,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:52,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:12:52,008 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 08:12:52,010 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:12:52,010 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:12:52,010 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 08:12:52,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:52,016 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-02 08:12:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:52,034 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-12-02 08:12:52,035 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [10], [12], [17], [19], [23], [29], [31], [32], [35], [37], [41], [47], [62], [64], [65], [66], [67] [2018-12-02 08:12:52,035 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 08:12:52,035 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 08:12:52,062 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 08:12:52,062 INFO L272 AbstractInterpreter]: Visited 20 different actions 47 times. Merged at 9 different actions 27 times. Widened at 1 different actions 1 times. Performed 246 root evaluator evaluations with a maximum evaluation depth of 4. Performed 246 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 27 variables. [2018-12-02 08:12:52,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:12:52,064 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 08:12:52,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:12:52,064 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:12:52,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:12:52,071 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 08:12:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:12:52,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:12:52,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 08:12:52,584 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 08:12:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 08:12:52,614 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:12:52,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2018-12-02 08:12:52,614 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 08:12:52,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 08:12:52,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 08:12:52,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2018-12-02 08:12:52,615 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2018-12-02 08:13:00,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:13:00,604 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2018-12-02 08:13:00,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 08:13:00,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-12-02 08:13:00,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:13:00,605 INFO L225 Difference]: With dead ends: 35 [2018-12-02 08:13:00,605 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 08:13:00,605 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2018-12-02 08:13:00,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 08:13:00,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 08:13:00,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 08:13:00,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 08:13:00,605 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-12-02 08:13:00,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:13:00,605 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 08:13:00,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 08:13:00,606 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 08:13:00,606 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 08:13:00,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:13:00 BoogieIcfgContainer [2018-12-02 08:13:00,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 08:13:00,608 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 08:13:00,609 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 08:13:00,609 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 08:13:00,609 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:12:47" (3/4) ... [2018-12-02 08:13:00,611 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 08:13:00,614 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 08:13:00,614 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 08:13:00,616 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-12-02 08:13:00,616 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-02 08:13:00,616 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-02 08:13:00,616 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 08:13:00,642 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ad355e0c-b680-46a1-b770-36e1a411f540/bin-2019/utaipan/witness.graphml [2018-12-02 08:13:00,642 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 08:13:00,643 INFO L168 Benchmark]: Toolchain (without parser) took 13495.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 947.0 MB in the beginning and 972.4 MB in the end (delta: -25.4 MB). Peak memory consumption was 108.8 MB. Max. memory is 11.5 GB. [2018-12-02 08:13:00,643 INFO L168 Benchmark]: CDTParser took 0.14 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. [2018-12-02 08:13:00,643 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.83 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -130.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-12-02 08:13:00,644 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.02 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 08:13:00,644 INFO L168 Benchmark]: Boogie Preprocessor took 15.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 08:13:00,644 INFO L168 Benchmark]: RCFGBuilder took 193.54 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-12-02 08:13:00,644 INFO L168 Benchmark]: TraceAbstraction took 12982.27 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 45.6 MB). Free memory was 1.1 GB in the beginning and 978.3 MB in the end (delta: 74.6 MB). Peak memory consumption was 120.2 MB. Max. memory is 11.5 GB. [2018-12-02 08:13:00,644 INFO L168 Benchmark]: Witness Printer took 33.43 ms. Allocated memory is still 1.2 GB. Free memory was 978.3 MB in the beginning and 972.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 11.5 GB. [2018-12-02 08:13:00,646 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 250.83 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -130.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.02 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 193.54 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 12982.27 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 45.6 MB). Free memory was 1.1 GB in the beginning and 978.3 MB in the end (delta: 74.6 MB). Peak memory consumption was 120.2 MB. Max. memory is 11.5 GB. * Witness Printer took 33.43 ms. Allocated memory is still 1.2 GB. Free memory was 978.3 MB in the beginning and 972.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 550]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 553]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 540]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 550]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 553]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 553]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 553]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 33 locations, 7 error locations. SAFE Result, 12.9s OverallTime, 11 OverallIterations, 2 TraceHistogramMax, 9.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 230 SDtfs, 414 SDslu, 318 SDs, 0 SdLazy, 383 SolverSat, 37 SolverUnsat, 14 SolverUnknown, 0 SolverNotchecked, 9.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 369 GetRequests, 298 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 7 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 67 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 368 NumberOfCodeBlocks, 368 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 346 ConstructedInterpolants, 46 QuantifiedInterpolants, 57539 SizeOfPredicates, 59 NumberOfNonLiveVariables, 841 ConjunctsInSsa, 96 ConjunctsInUnsatCore, 22 InterpolantComputations, 18 PerfectInterpolantSequences, 13/18 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...