./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_78a1225e-01c8-40e8-981f-11caafa79a30/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/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_78a1225e-01c8-40e8-981f-11caafa79a30/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/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 [2018-12-09 12:00:10,375 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 12:00:10,376 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 12:00:10,382 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 12:00:10,382 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 12:00:10,383 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 12:00:10,383 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 12:00:10,384 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 12:00:10,385 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 12:00:10,385 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 12:00:10,386 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 12:00:10,386 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 12:00:10,386 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 12:00:10,387 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 12:00:10,387 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 12:00:10,387 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 12:00:10,388 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 12:00:10,389 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 12:00:10,390 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 12:00:10,390 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 12:00:10,391 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 12:00:10,391 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 12:00:10,392 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 12:00:10,392 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 12:00:10,392 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 12:00:10,393 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 12:00:10,393 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 12:00:10,394 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 12:00:10,394 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 12:00:10,395 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 12:00:10,395 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 12:00:10,395 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 12:00:10,395 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 12:00:10,395 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 12:00:10,396 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 12:00:10,396 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 12:00:10,396 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-09 12:00:10,403 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 12:00:10,404 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 12:00:10,404 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 12:00:10,404 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 12:00:10,404 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 12:00:10,404 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 12:00:10,404 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 12:00:10,405 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 12:00:10,405 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 12:00:10,405 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 12:00:10,405 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 12:00:10,405 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 12:00:10,405 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 12:00:10,405 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 12:00:10,406 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 12:00:10,406 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 12:00:10,406 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 12:00:10,406 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 12:00:10,406 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 12:00:10,406 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 12:00:10,406 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 12:00:10,406 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 12:00:10,406 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 12:00:10,406 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 12:00:10,406 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 12:00:10,407 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 12:00:10,407 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 12:00:10,407 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 12:00:10,407 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 12:00:10,407 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 12:00:10,407 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 12:00:10,407 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 12:00:10,407 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 12:00:10,407 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 12:00:10,407 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 12:00:10,407 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 12:00:10,408 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_78a1225e-01c8-40e8-981f-11caafa79a30/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 [2018-12-09 12:00:10,425 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 12:00:10,434 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 12:00:10,436 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 12:00:10,438 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 12:00:10,438 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 12:00:10,438 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/bin-2019/utaipan/../../sv-benchmarks/c/array-memsafety/mult_array-alloca_true-valid-memsafety_true-termination.i [2018-12-09 12:00:10,478 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/bin-2019/utaipan/data/ac750d6db/e4d381ad1097453fbf2564085d1ea2c8/FLAGd6d11f22f [2018-12-09 12:00:10,886 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 12:00:10,886 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/sv-benchmarks/c/array-memsafety/mult_array-alloca_true-valid-memsafety_true-termination.i [2018-12-09 12:00:10,892 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/bin-2019/utaipan/data/ac750d6db/e4d381ad1097453fbf2564085d1ea2c8/FLAGd6d11f22f [2018-12-09 12:00:10,900 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/bin-2019/utaipan/data/ac750d6db/e4d381ad1097453fbf2564085d1ea2c8 [2018-12-09 12:00:10,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 12:00:10,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 12:00:10,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 12:00:10,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 12:00:10,906 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 12:00:10,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:00:10" (1/1) ... [2018-12-09 12:00:10,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68649384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:10, skipping insertion in model container [2018-12-09 12:00:10,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:00:10" (1/1) ... [2018-12-09 12:00:10,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 12:00:10,930 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 12:00:11,072 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:00:11,078 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 12:00:11,133 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:00:11,152 INFO L195 MainTranslator]: Completed translation [2018-12-09 12:00:11,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:11 WrapperNode [2018-12-09 12:00:11,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 12:00:11,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 12:00:11,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 12:00:11,153 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 12:00:11,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:11" (1/1) ... [2018-12-09 12:00:11,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:11" (1/1) ... [2018-12-09 12:00:11,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 12:00:11,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 12:00:11,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 12:00:11,169 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 12:00:11,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:11" (1/1) ... [2018-12-09 12:00:11,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:11" (1/1) ... [2018-12-09 12:00:11,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:11" (1/1) ... [2018-12-09 12:00:11,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:11" (1/1) ... [2018-12-09 12:00:11,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:11" (1/1) ... [2018-12-09 12:00:11,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:11" (1/1) ... [2018-12-09 12:00:11,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:11" (1/1) ... [2018-12-09 12:00:11,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 12:00:11,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 12:00:11,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 12:00:11,184 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 12:00:11,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 12:00:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 12:00:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 12:00:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 12:00:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 12:00:11,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 12:00:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 12:00:11,214 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 12:00:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 12:00:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 12:00:11,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 12:00:11,340 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 12:00:11,341 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 12:00:11,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:00:11 BoogieIcfgContainer [2018-12-09 12:00:11,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 12:00:11,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 12:00:11,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 12:00:11,343 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 12:00:11,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:00:10" (1/3) ... [2018-12-09 12:00:11,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432fec98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:00:11, skipping insertion in model container [2018-12-09 12:00:11,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:00:11" (2/3) ... [2018-12-09 12:00:11,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432fec98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:00:11, skipping insertion in model container [2018-12-09 12:00:11,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:00:11" (3/3) ... [2018-12-09 12:00:11,345 INFO L112 eAbstractionObserver]: Analyzing ICFG mult_array-alloca_true-valid-memsafety_true-termination.i [2018-12-09 12:00:11,351 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 12:00:11,355 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-12-09 12:00:11,363 INFO L257 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2018-12-09 12:00:11,378 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 12:00:11,378 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-09 12:00:11,378 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 12:00:11,378 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 12:00:11,378 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 12:00:11,378 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 12:00:11,378 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 12:00:11,378 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 12:00:11,387 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-12-09 12:00:11,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 12:00:11,392 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:00:11,392 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:00:11,393 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 12:00:11,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:00:11,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1464982835, now seen corresponding path program 1 times [2018-12-09 12:00:11,399 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:00:11,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:11,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:11,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:11,427 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:00:11,450 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 12:00:11,450 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 12:00:11,450 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 12:00:11,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:11,457 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 12:00:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:11,479 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-09 12:00:11,480 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 12:00:11,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 12:00:11,480 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 12:00:11,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:11,487 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 12:00:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:11,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:00:11,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:00:11,530 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 12:00:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:00:11,565 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:00:11,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-12-09 12:00:11,565 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:00:11,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 12:00:11,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 12:00:11,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 12:00:11,578 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2018-12-09 12:00:11,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:00:11,607 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2018-12-09 12:00:11,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 12:00:11,609 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-12-09 12:00:11,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:00:11,617 INFO L225 Difference]: With dead ends: 33 [2018-12-09 12:00:11,617 INFO L226 Difference]: Without dead ends: 30 [2018-12-09 12:00:11,618 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 [2018-12-09 12:00:11,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-09 12:00:11,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-12-09 12:00:11,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-09 12:00:11,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2018-12-09 12:00:11,644 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2018-12-09 12:00:11,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:00:11,644 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2018-12-09 12:00:11,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 12:00:11,644 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2018-12-09 12:00:11,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 12:00:11,645 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:00:11,645 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:00:11,645 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 12:00:11,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:00:11,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1830172400, now seen corresponding path program 1 times [2018-12-09 12:00:11,645 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:00:11,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:11,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:11,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:11,646 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:00:11,650 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 12:00:11,651 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 12:00:11,651 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 12:00:11,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:11,657 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 12:00:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:11,676 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-09 12:00:11,676 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 12:00:11,676 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 12:00:11,676 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 12:00:11,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:11,682 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 12:00:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:11,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:00:11,711 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 12:00:11,715 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 [2018-12-09 12:00:11,719 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 [2018-12-09 12:00:11,719 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 12:00:11,726 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:00:11,733 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. [2018-12-09 12:00:11,734 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:18, output treesize:15 [2018-12-09 12:00:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:00:11,742 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 12:00:11,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:00:11,764 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:00:11,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-12-09 12:00:11,764 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:00:11,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 12:00:11,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 12:00:11,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-09 12:00:11,765 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 3 states. [2018-12-09 12:00:11,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:00:11,781 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2018-12-09 12:00:11,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 12:00:11,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-12-09 12:00:11,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:00:11,782 INFO L225 Difference]: With dead ends: 28 [2018-12-09 12:00:11,782 INFO L226 Difference]: Without dead ends: 28 [2018-12-09 12:00:11,783 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 [2018-12-09 12:00:11,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-09 12:00:11,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-09 12:00:11,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-09 12:00:11,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-12-09 12:00:11,785 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2018-12-09 12:00:11,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:00:11,785 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-12-09 12:00:11,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 12:00:11,785 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-12-09 12:00:11,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 12:00:11,786 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:00:11,786 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:00:11,786 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 12:00:11,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:00:11,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1830172399, now seen corresponding path program 1 times [2018-12-09 12:00:11,786 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:00:11,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:11,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:11,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:11,787 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:00:11,791 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 12:00:11,791 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 12:00:11,791 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 12:00:11,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:11,797 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 12:00:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:11,815 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-09 12:00:11,816 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 12:00:11,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 12:00:11,816 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 12:00:11,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:11,822 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 12:00:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:11,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:00:11,851 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 [2018-12-09 12:00:11,852 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 12:00:11,863 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 [2018-12-09 12:00:11,866 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 [2018-12-09 12:00:11,866 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 12:00:11,870 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:00:11,877 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. [2018-12-09 12:00:11,877 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:23, output treesize:20 [2018-12-09 12:00:11,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:00:11,899 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 12:00:11,922 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 [2018-12-09 12:00:11,922 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 12:00:11,929 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 [2018-12-09 12:00:11,940 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 [2018-12-09 12:00:11,940 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 12:00:11,941 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-12-09 12:00:11,941 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 12:00:11,943 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:00:11,946 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:00:11,946 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:27, output treesize:5 [2018-12-09 12:00:11,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:00:11,969 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:00:11,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2018-12-09 12:00:11,969 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:00:11,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 12:00:11,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 12:00:11,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-12-09 12:00:11,970 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2018-12-09 12:00:12,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:00:12,044 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2018-12-09 12:00:12,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 12:00:12,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-12-09 12:00:12,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:00:12,045 INFO L225 Difference]: With dead ends: 50 [2018-12-09 12:00:12,045 INFO L226 Difference]: Without dead ends: 50 [2018-12-09 12:00:12,045 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 [2018-12-09 12:00:12,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-12-09 12:00:12,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2018-12-09 12:00:12,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-09 12:00:12,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-09 12:00:12,048 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 13 [2018-12-09 12:00:12,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:00:12,049 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-09 12:00:12,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 12:00:12,049 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-09 12:00:12,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 12:00:12,049 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:00:12,049 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:00:12,049 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr1REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 12:00:12,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:00:12,050 INFO L82 PathProgramCache]: Analyzing trace with hash -55165037, now seen corresponding path program 1 times [2018-12-09 12:00:12,050 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:00:12,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:12,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:12,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:12,050 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:00:12,054 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 12:00:12,054 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 12:00:12,054 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 12:00:12,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:12,061 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 12:00:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:12,080 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-09 12:00:12,080 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 12:00:12,080 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 12:00:12,080 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/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 [2018-12-09 12:00:12,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:12,087 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 12:00:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:12,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:00:12,112 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 [2018-12-09 12:00:12,112 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 12:00:12,118 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 [2018-12-09 12:00:12,121 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 [2018-12-09 12:00:12,121 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 12:00:12,129 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:00:12,136 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. [2018-12-09 12:00:12,136 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:30, output treesize:27 [2018-12-09 12:00:12,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:00:12,156 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 12:00:12,176 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 [2018-12-09 12:00:12,176 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 12:00:12,180 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 [2018-12-09 12:00:12,190 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 [2018-12-09 12:00:12,190 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 12:00:12,191 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-12-09 12:00:12,191 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 12:00:12,194 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:00:12,197 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:00:12,197 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:27, output treesize:5 [2018-12-09 12:00:12,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:00:12,219 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:00:12,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2018-12-09 12:00:12,219 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:00:12,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 12:00:12,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 12:00:12,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-09 12:00:12,219 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 5 states. [2018-12-09 12:00:12,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:00:12,271 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2018-12-09 12:00:12,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 12:00:12,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-12-09 12:00:12,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:00:12,272 INFO L225 Difference]: With dead ends: 50 [2018-12-09 12:00:12,272 INFO L226 Difference]: Without dead ends: 50 [2018-12-09 12:00:12,272 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 [2018-12-09 12:00:12,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-12-09 12:00:12,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2018-12-09 12:00:12,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-12-09 12:00:12,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2018-12-09 12:00:12,275 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 13 [2018-12-09 12:00:12,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:00:12,275 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2018-12-09 12:00:12,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 12:00:12,276 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2018-12-09 12:00:12,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 12:00:12,276 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:00:12,276 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:00:12,276 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr1REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 12:00:12,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:00:12,277 INFO L82 PathProgramCache]: Analyzing trace with hash 130097492, now seen corresponding path program 1 times [2018-12-09 12:00:12,277 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:00:12,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:12,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:12,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:12,278 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:00:12,282 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 12:00:12,282 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 12:00:12,282 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/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 [2018-12-09 12:00:12,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:12,288 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 12:00:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:12,306 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-12-09 12:00:12,307 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [8], [12], [17], [19], [23], [31], [32], [34], [35], [37], [65], [66], [67] [2018-12-09 12:00:12,326 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 12:00:12,326 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 12:00:12,410 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 12:00:12,411 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. [2018-12-09 12:00:12,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:00:12,416 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 12:00:12,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 12:00:12,416 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/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 [2018-12-09 12:00:12,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:12,422 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 12:00:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:12,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:00:12,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:00:12,444 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 12:00:12,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:00:12,475 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:00:12,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-12-09 12:00:12,475 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:00:12,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 12:00:12,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 12:00:12,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-12-09 12:00:12,476 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 5 states. [2018-12-09 12:00:12,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:00:12,508 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2018-12-09 12:00:12,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 12:00:12,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-12-09 12:00:12,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:00:12,509 INFO L225 Difference]: With dead ends: 50 [2018-12-09 12:00:12,509 INFO L226 Difference]: Without dead ends: 50 [2018-12-09 12:00:12,509 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 [2018-12-09 12:00:12,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-12-09 12:00:12,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2018-12-09 12:00:12,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-09 12:00:12,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2018-12-09 12:00:12,512 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 17 [2018-12-09 12:00:12,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:00:12,512 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2018-12-09 12:00:12,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 12:00:12,512 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-12-09 12:00:12,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 12:00:12,513 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:00:12,513 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:00:12,513 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr1REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 12:00:12,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:00:12,514 INFO L82 PathProgramCache]: Analyzing trace with hash 831162070, now seen corresponding path program 1 times [2018-12-09 12:00:12,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:00:12,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:12,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:12,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:12,515 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:00:12,518 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 12:00:12,518 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 12:00:12,518 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/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 [2018-12-09 12:00:12,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:12,524 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 12:00:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:12,543 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-12-09 12:00:12,543 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [10], [12], [17], [19], [23], [31], [32], [34], [35], [37], [65], [66], [67] [2018-12-09 12:00:12,544 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 12:00:12,544 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 12:00:12,598 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 12:00:12,598 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. [2018-12-09 12:00:12,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:00:12,599 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 12:00:12,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 12:00:12,599 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/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 [2018-12-09 12:00:12,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:12,605 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 12:00:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:12,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:00:12,622 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 [2018-12-09 12:00:12,622 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 12:00:12,627 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 [2018-12-09 12:00:12,629 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 [2018-12-09 12:00:12,630 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 12:00:12,634 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:00:12,638 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. [2018-12-09 12:00:12,638 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:27, output treesize:24 [2018-12-09 12:00:12,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:00:12,687 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 12:00:12,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:00:12,759 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 12:00:12,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2018-12-09 12:00:12,760 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 12:00:12,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 12:00:12,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 12:00:12,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-12-09 12:00:12,761 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 10 states. [2018-12-09 12:00:13,774 WARN L180 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2018-12-09 12:00:13,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:00:13,994 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-12-09 12:00:13,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 12:00:13,995 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-12-09 12:00:13,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:00:13,995 INFO L225 Difference]: With dead ends: 46 [2018-12-09 12:00:13,995 INFO L226 Difference]: Without dead ends: 46 [2018-12-09 12:00:13,995 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 [2018-12-09 12:00:13,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-09 12:00:13,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-12-09 12:00:13,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 12:00:13,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-12-09 12:00:13,997 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 17 [2018-12-09 12:00:13,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:00:13,998 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-12-09 12:00:13,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 12:00:13,998 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-12-09 12:00:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 12:00:13,998 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:00:13,998 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:00:13,998 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr1REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 12:00:13,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:00:13,999 INFO L82 PathProgramCache]: Analyzing trace with hash -117219070, now seen corresponding path program 1 times [2018-12-09 12:00:13,999 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:00:13,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:13,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:13,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:13,999 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:00:14,003 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 12:00:14,004 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 12:00:14,004 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/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 [2018-12-09 12:00:14,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:14,012 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 12:00:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:14,041 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-12-09 12:00:14,041 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [10], [12], [17], [19], [23], [29], [31], [32], [35], [37], [41], [49], [52], [65], [66], [67] [2018-12-09 12:00:14,042 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 12:00:14,042 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 12:00:14,103 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 12:00:14,103 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. [2018-12-09 12:00:14,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:00:14,105 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 12:00:14,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 12:00:14,105 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/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 [2018-12-09 12:00:14,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:14,111 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 12:00:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:14,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:00:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:00:14,166 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 12:00:14,300 WARN L180 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2018-12-09 12:00:14,410 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 [2018-12-09 12:00:14,411 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 12:00:14,451 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 [2018-12-09 12:00:14,451 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 12:00:14,475 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 [2018-12-09 12:00:14,475 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 12:00:14,488 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 [2018-12-09 12:00:14,489 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 12:00:14,496 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-09 12:00:14,497 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:272, output treesize:37 [2018-12-09 12:00:14,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:00:14,576 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 12:00:14,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-12-09 12:00:14,576 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 12:00:14,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-09 12:00:14,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-09 12:00:14,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2018-12-09 12:00:14,577 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 14 states. [2018-12-09 12:00:14,876 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 36 [2018-12-09 12:00:15,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:00:15,005 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2018-12-09 12:00:15,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 12:00:15,005 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 19 [2018-12-09 12:00:15,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:00:15,006 INFO L225 Difference]: With dead ends: 73 [2018-12-09 12:00:15,006 INFO L226 Difference]: Without dead ends: 73 [2018-12-09 12:00:15,006 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 [2018-12-09 12:00:15,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-12-09 12:00:15,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 36. [2018-12-09 12:00:15,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 12:00:15,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-12-09 12:00:15,008 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 19 [2018-12-09 12:00:15,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:00:15,008 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-12-09 12:00:15,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-09 12:00:15,008 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-12-09 12:00:15,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 12:00:15,009 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:00:15,009 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:00:15,009 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr1REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 12:00:15,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:00:15,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1672293368, now seen corresponding path program 1 times [2018-12-09 12:00:15,009 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:00:15,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:15,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:15,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:15,010 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:00:15,013 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 12:00:15,013 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 12:00:15,013 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/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 [2018-12-09 12:00:15,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:15,019 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 12:00:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:15,039 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-12-09 12:00:15,040 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [8], [12], [17], [19], [23], [29], [31], [32], [35], [37], [41], [49], [50], [54], [65], [66], [67] [2018-12-09 12:00:15,040 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 12:00:15,041 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 12:00:15,063 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 12:00:15,063 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. [2018-12-09 12:00:15,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:00:15,064 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 12:00:15,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 12:00:15,064 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/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 [2018-12-09 12:00:15,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:15,077 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 12:00:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:15,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:00:15,091 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 [2018-12-09 12:00:15,093 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 [2018-12-09 12:00:15,094 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 12:00:15,102 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:00:15,105 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. [2018-12-09 12:00:15,105 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2018-12-09 12:00:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 12:00:15,109 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 12:00:15,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 12:00:15,127 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:00:15,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-12-09 12:00:15,127 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:00:15,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 12:00:15,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 12:00:15,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 12:00:15,128 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 3 states. [2018-12-09 12:00:15,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:00:15,138 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2018-12-09 12:00:15,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 12:00:15,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-12-09 12:00:15,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:00:15,139 INFO L225 Difference]: With dead ends: 35 [2018-12-09 12:00:15,139 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 12:00:15,139 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 [2018-12-09 12:00:15,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 12:00:15,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-09 12:00:15,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-09 12:00:15,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2018-12-09 12:00:15,141 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 20 [2018-12-09 12:00:15,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:00:15,141 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2018-12-09 12:00:15,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 12:00:15,141 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2018-12-09 12:00:15,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 12:00:15,141 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:00:15,141 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:00:15,141 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr1REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 12:00:15,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:00:15,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1672293369, now seen corresponding path program 1 times [2018-12-09 12:00:15,142 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:00:15,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:15,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:15,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:15,142 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:00:15,145 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 12:00:15,145 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 12:00:15,145 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/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 [2018-12-09 12:00:15,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:15,151 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 12:00:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:15,170 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-12-09 12:00:15,170 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [8], [12], [17], [19], [23], [29], [31], [32], [35], [37], [41], [49], [50], [55], [65], [66], [67] [2018-12-09 12:00:15,171 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 12:00:15,171 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 12:00:15,190 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 12:00:15,190 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. [2018-12-09 12:00:15,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:00:15,193 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 12:00:15,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 12:00:15,193 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/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 [2018-12-09 12:00:15,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:15,200 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 12:00:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:15,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:00:15,213 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 [2018-12-09 12:00:15,220 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 [2018-12-09 12:00:15,221 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-12-09 12:00:15,228 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-09 12:00:15,236 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. [2018-12-09 12:00:15,236 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:34 [2018-12-09 12:00:15,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 12:00:15,262 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 12:00:15,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 12:00:15,319 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:00:15,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2018-12-09 12:00:15,319 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:00:15,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 12:00:15,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 12:00:15,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-12-09 12:00:15,320 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2018-12-09 12:00:15,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:00:15,352 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2018-12-09 12:00:15,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 12:00:15,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-12-09 12:00:15,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:00:15,353 INFO L225 Difference]: With dead ends: 34 [2018-12-09 12:00:15,353 INFO L226 Difference]: Without dead ends: 34 [2018-12-09 12:00:15,353 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 [2018-12-09 12:00:15,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-09 12:00:15,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-09 12:00:15,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-09 12:00:15,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-12-09 12:00:15,354 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 20 [2018-12-09 12:00:15,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:00:15,355 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-12-09 12:00:15,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 12:00:15,355 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-12-09 12:00:15,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 12:00:15,355 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:00:15,355 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:00:15,355 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr1REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 12:00:15,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:00:15,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1672291828, now seen corresponding path program 1 times [2018-12-09 12:00:15,355 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:00:15,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:15,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:15,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:15,356 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:00:15,358 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 12:00:15,358 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 12:00:15,359 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/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 [2018-12-09 12:00:15,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:15,367 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 12:00:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:15,386 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-12-09 12:00:15,386 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [8], [12], [17], [19], [23], [29], [31], [32], [35], [37], [41], [47], [62], [64], [65], [66], [67] [2018-12-09 12:00:15,387 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 12:00:15,387 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 12:00:15,399 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 12:00:15,399 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. [2018-12-09 12:00:15,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:00:15,400 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 12:00:15,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 12:00:15,400 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/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 [2018-12-09 12:00:15,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:15,407 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 12:00:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:15,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:00:15,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 12:00:15,435 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 12:00:15,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 12:00:15,482 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:00:15,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-12-09 12:00:15,482 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:00:15,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 12:00:15,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 12:00:15,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-12-09 12:00:15,483 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2018-12-09 12:00:15,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:00:15,513 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2018-12-09 12:00:15,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 12:00:15,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-12-09 12:00:15,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:00:15,514 INFO L225 Difference]: With dead ends: 48 [2018-12-09 12:00:15,514 INFO L226 Difference]: Without dead ends: 48 [2018-12-09 12:00:15,514 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 [2018-12-09 12:00:15,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-09 12:00:15,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 36. [2018-12-09 12:00:15,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 12:00:15,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-12-09 12:00:15,517 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 20 [2018-12-09 12:00:15,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:00:15,517 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-12-09 12:00:15,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 12:00:15,517 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-12-09 12:00:15,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 12:00:15,517 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:00:15,517 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:00:15,518 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr1REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 12:00:15,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:00:15,518 INFO L82 PathProgramCache]: Analyzing trace with hash 661174578, now seen corresponding path program 1 times [2018-12-09 12:00:15,518 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:00:15,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:15,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:15,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:00:15,518 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:00:15,522 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 12:00:15,522 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 12:00:15,522 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/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 [2018-12-09 12:00:15,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:15,528 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 12:00:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:15,546 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-12-09 12:00:15,546 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [10], [12], [17], [19], [23], [29], [31], [32], [35], [37], [41], [47], [62], [64], [65], [66], [67] [2018-12-09 12:00:15,547 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 12:00:15,547 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 12:00:15,588 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 12:00:15,588 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. [2018-12-09 12:00:15,589 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:00:15,590 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 12:00:15,590 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 12:00:15,590 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/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 [2018-12-09 12:00:15,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:00:15,596 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 12:00:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:00:15,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:00:16,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 12:00:16,101 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 12:00:16,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 12:00:16,139 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:00:16,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2018-12-09 12:00:16,139 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:00:16,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 12:00:16,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 12:00:16,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2018-12-09 12:00:16,140 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2018-12-09 12:00:24,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:00:24,128 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2018-12-09 12:00:24,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 12:00:24,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-12-09 12:00:24,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:00:24,128 INFO L225 Difference]: With dead ends: 35 [2018-12-09 12:00:24,128 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 12:00:24,129 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 [2018-12-09 12:00:24,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 12:00:24,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 12:00:24,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 12:00:24,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 12:00:24,129 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-12-09 12:00:24,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:00:24,129 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 12:00:24,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 12:00:24,129 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 12:00:24,129 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 12:00:24,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:00:24 BoogieIcfgContainer [2018-12-09 12:00:24,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 12:00:24,132 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 12:00:24,132 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 12:00:24,132 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 12:00:24,132 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:00:11" (3/4) ... [2018-12-09 12:00:24,134 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 12:00:24,137 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 12:00:24,138 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 12:00:24,140 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-12-09 12:00:24,140 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-09 12:00:24,140 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 12:00:24,140 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 12:00:24,165 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_78a1225e-01c8-40e8-981f-11caafa79a30/bin-2019/utaipan/witness.graphml [2018-12-09 12:00:24,165 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 12:00:24,166 INFO L168 Benchmark]: Toolchain (without parser) took 13262.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 947.0 MB in the beginning and 975.8 MB in the end (delta: -28.8 MB). Peak memory consumption was 107.0 MB. Max. memory is 11.5 GB. [2018-12-09 12:00:24,166 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:00:24,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.2 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -132.6 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-12-09 12:00:24,166 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.49 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. [2018-12-09 12:00:24,167 INFO L168 Benchmark]: Boogie Preprocessor took 15.01 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. [2018-12-09 12:00:24,167 INFO L168 Benchmark]: RCFGBuilder took 156.83 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. [2018-12-09 12:00:24,167 INFO L168 Benchmark]: TraceAbstraction took 12790.51 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 981.7 MB in the end (delta: 72.8 MB). Peak memory consumption was 118.4 MB. Max. memory is 11.5 GB. [2018-12-09 12:00:24,167 INFO L168 Benchmark]: Witness Printer took 33.12 ms. Allocated memory is still 1.2 GB. Free memory is still 975.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:00:24,168 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 248.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.2 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -132.6 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.49 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. * Boogie Preprocessor took 15.01 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 156.83 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 12790.51 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 981.7 MB in the end (delta: 72.8 MB). Peak memory consumption was 118.4 MB. Max. memory is 11.5 GB. * Witness Printer took 33.12 ms. Allocated memory is still 1.2 GB. Free memory is still 975.8 MB. There was no memory consumed. 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: 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: 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, 12.7s 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, 1.6s 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...