./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7efcb16e512d7de15a71f6cd895dcd8493c4b646 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 17:17:45,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:17:45,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:17:45,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:17:45,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:17:45,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:17:45,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:17:45,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:17:45,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:17:45,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:17:45,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:17:45,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:17:45,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:17:45,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:17:45,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:17:45,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:17:45,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:17:45,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:17:45,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:17:45,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:17:45,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:17:45,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:17:45,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:17:45,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:17:45,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:17:45,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:17:45,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:17:45,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:17:45,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:17:45,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:17:45,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:17:45,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:17:45,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:17:45,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:17:45,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:17:45,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:17:45,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:17:45,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:17:45,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:17:45,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:17:45,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:17:45,724 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-12-07 17:17:45,733 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:17:45,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:17:45,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:17:45,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:17:45,734 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:17:45,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:17:45,735 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:17:45,735 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 17:17:45,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:17:45,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:17:45,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:17:45,735 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 17:17:45,735 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 17:17:45,735 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 17:17:45,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:17:45,736 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 17:17:45,736 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:17:45,736 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:17:45,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:17:45,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:17:45,736 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:17:45,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:17:45,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:17:45,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:17:45,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:17:45,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:17:45,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:17:45,737 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:17:45,737 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G 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 -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7efcb16e512d7de15a71f6cd895dcd8493c4b646 [2019-12-07 17:17:45,837 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:17:45,845 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:17:45,847 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:17:45,848 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:17:45,848 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:17:45,848 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext3/scopes3.c [2019-12-07 17:17:45,885 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer/data/4ac1bc2a8/afa65eaf9a3949f4ad1ec146a2da4f5c/FLAG1d33c1920 [2019-12-07 17:17:46,308 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:17:46,309 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/sv-benchmarks/c/memsafety-ext3/scopes3.c [2019-12-07 17:17:46,312 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer/data/4ac1bc2a8/afa65eaf9a3949f4ad1ec146a2da4f5c/FLAG1d33c1920 [2019-12-07 17:17:46,321 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer/data/4ac1bc2a8/afa65eaf9a3949f4ad1ec146a2da4f5c [2019-12-07 17:17:46,323 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:17:46,324 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 17:17:46,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:17:46,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:17:46,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:17:46,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:17:46" (1/1) ... [2019-12-07 17:17:46,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@431cfabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:17:46, skipping insertion in model container [2019-12-07 17:17:46,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:17:46" (1/1) ... [2019-12-07 17:17:46,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:17:46,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:17:46,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:17:46,488 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:17:46,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:17:46,508 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:17:46,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:17:46 WrapperNode [2019-12-07 17:17:46,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:17:46,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:17:46,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:17:46,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:17:46,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:17:46" (1/1) ... [2019-12-07 17:17:46,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:17:46" (1/1) ... [2019-12-07 17:17:46,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:17:46" (1/1) ... [2019-12-07 17:17:46,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:17:46" (1/1) ... [2019-12-07 17:17:46,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:17:46" (1/1) ... [2019-12-07 17:17:46,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:17:46" (1/1) ... [2019-12-07 17:17:46,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:17:46" (1/1) ... [2019-12-07 17:17:46,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:17:46,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:17:46,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:17:46,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:17:46,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:17:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:17:46,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 17:17:46,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:17:46,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 17:17:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 17:17:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 17:17:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 17:17:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 17:17:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 17:17:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:17:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 17:17:46,686 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:17:46,686 INFO L287 CfgBuilder]: Removed 1 assume(true) statements. [2019-12-07 17:17:46,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:17:46 BoogieIcfgContainer [2019-12-07 17:17:46,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:17:46,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:17:46,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:17:46,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:17:46,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:17:46" (1/3) ... [2019-12-07 17:17:46,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768b2f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:17:46, skipping insertion in model container [2019-12-07 17:17:46,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:17:46" (2/3) ... [2019-12-07 17:17:46,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768b2f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:17:46, skipping insertion in model container [2019-12-07 17:17:46,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:17:46" (3/3) ... [2019-12-07 17:17:46,692 INFO L109 eAbstractionObserver]: Analyzing ICFG scopes3.c [2019-12-07 17:17:46,698 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:17:46,702 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-12-07 17:17:46,710 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-12-07 17:17:46,721 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:17:46,722 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 17:17:46,722 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:17:46,722 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:17:46,722 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:17:46,722 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:17:46,722 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:17:46,722 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:17:46,731 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-12-07 17:17:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 17:17:46,737 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:17:46,737 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:17:46,737 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 17:17:46,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:17:46,741 INFO L82 PathProgramCache]: Analyzing trace with hash -197094901, now seen corresponding path program 1 times [2019-12-07 17:17:46,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:17:46,747 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592453010] [2019-12-07 17:17:46,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:17:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:46,845 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592453010] [2019-12-07 17:17:46,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:17:46,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 17:17:46,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119675634] [2019-12-07 17:17:46,849 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 17:17:46,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:17:46,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 17:17:46,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 17:17:46,860 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2019-12-07 17:17:46,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:17:46,905 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-12-07 17:17:46,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 17:17:46,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 17:17:46,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:17:46,912 INFO L225 Difference]: With dead ends: 26 [2019-12-07 17:17:46,912 INFO L226 Difference]: Without dead ends: 21 [2019-12-07 17:17:46,913 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 17:17:46,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-07 17:17:46,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-12-07 17:17:46,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 17:17:46,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-12-07 17:17:46,935 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 8 [2019-12-07 17:17:46,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:17:46,935 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-12-07 17:17:46,935 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 17:17:46,935 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-12-07 17:17:46,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 17:17:46,935 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:17:46,936 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:17:46,936 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 17:17:46,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:17:46,936 INFO L82 PathProgramCache]: Analyzing trace with hash -197095180, now seen corresponding path program 1 times [2019-12-07 17:17:46,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:17:46,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88038428] [2019-12-07 17:17:46,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:17:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:46,969 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88038428] [2019-12-07 17:17:46,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:17:46,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 17:17:46,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283852230] [2019-12-07 17:17:46,970 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:17:46,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:17:46,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:17:46,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:17:46,970 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 4 states. [2019-12-07 17:17:47,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:17:47,003 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-12-07 17:17:47,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 17:17:47,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 17:17:47,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:17:47,005 INFO L225 Difference]: With dead ends: 22 [2019-12-07 17:17:47,005 INFO L226 Difference]: Without dead ends: 22 [2019-12-07 17:17:47,006 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 17:17:47,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-07 17:17:47,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-12-07 17:17:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 17:17:47,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-12-07 17:17:47,009 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2019-12-07 17:17:47,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:17:47,009 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-12-07 17:17:47,009 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:17:47,009 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-12-07 17:17:47,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 17:17:47,010 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:17:47,010 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:17:47,010 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 17:17:47,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:17:47,010 INFO L82 PathProgramCache]: Analyzing trace with hash -197095125, now seen corresponding path program 1 times [2019-12-07 17:17:47,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:17:47,011 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530653950] [2019-12-07 17:17:47,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:17:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:47,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:47,055 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530653950] [2019-12-07 17:17:47,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:17:47,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 17:17:47,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137032985] [2019-12-07 17:17:47,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:17:47,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:17:47,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:17:47,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:17:47,057 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 4 states. [2019-12-07 17:17:47,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:17:47,081 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2019-12-07 17:17:47,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:17:47,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 17:17:47,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:17:47,082 INFO L225 Difference]: With dead ends: 16 [2019-12-07 17:17:47,082 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 17:17:47,082 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:17:47,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 17:17:47,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 17:17:47,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 17:17:47,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-12-07 17:17:47,085 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2019-12-07 17:17:47,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:17:47,085 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-12-07 17:17:47,085 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:17:47,085 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-12-07 17:17:47,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 17:17:47,086 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:17:47,086 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:17:47,086 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 17:17:47,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:17:47,087 INFO L82 PathProgramCache]: Analyzing trace with hash -197095126, now seen corresponding path program 1 times [2019-12-07 17:17:47,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:17:47,087 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673649776] [2019-12-07 17:17:47,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:17:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:47,118 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673649776] [2019-12-07 17:17:47,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:17:47,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 17:17:47,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039319848] [2019-12-07 17:17:47,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:17:47,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:17:47,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:17:47,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:17:47,120 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 4 states. [2019-12-07 17:17:47,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:17:47,138 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-12-07 17:17:47,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:17:47,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 17:17:47,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:17:47,139 INFO L225 Difference]: With dead ends: 15 [2019-12-07 17:17:47,139 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 17:17:47,139 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:17:47,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 17:17:47,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 17:17:47,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 17:17:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-12-07 17:17:47,141 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2019-12-07 17:17:47,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:17:47,142 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-12-07 17:17:47,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:17:47,142 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-12-07 17:17:47,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 17:17:47,142 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:17:47,142 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:17:47,142 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 17:17:47,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:17:47,143 INFO L82 PathProgramCache]: Analyzing trace with hash -440617163, now seen corresponding path program 1 times [2019-12-07 17:17:47,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:17:47,143 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549718418] [2019-12-07 17:17:47,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:17:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:47,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:47,173 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549718418] [2019-12-07 17:17:47,173 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250605003] [2019-12-07 17:17:47,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:17:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:47,201 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 17:17:47,206 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:17:47,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:47,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:17:47,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-12-07 17:17:47,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500614470] [2019-12-07 17:17:47,225 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 17:17:47,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:17:47,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 17:17:47,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:17:47,225 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 6 states. [2019-12-07 17:17:47,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:17:47,254 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-12-07 17:17:47,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:17:47,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-12-07 17:17:47,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:17:47,255 INFO L225 Difference]: With dead ends: 20 [2019-12-07 17:17:47,255 INFO L226 Difference]: Without dead ends: 20 [2019-12-07 17:17:47,255 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:17:47,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-07 17:17:47,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-12-07 17:17:47,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 17:17:47,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-12-07 17:17:47,257 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2019-12-07 17:17:47,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:17:47,258 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-12-07 17:17:47,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 17:17:47,258 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-12-07 17:17:47,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 17:17:47,258 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:17:47,258 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:17:47,459 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:17:47,459 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 17:17:47,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:17:47,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1004249772, now seen corresponding path program 2 times [2019-12-07 17:17:47,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:17:47,460 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597699215] [2019-12-07 17:17:47,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:17:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:47,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597699215] [2019-12-07 17:17:47,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787329674] [2019-12-07 17:17:47,553 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:17:47,597 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 17:17:47,597 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:17:47,598 INFO L264 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:17:47,599 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:17:47,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:47,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:17:47,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-12-07 17:17:47,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123978905] [2019-12-07 17:17:47,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 17:17:47,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:17:47,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 17:17:47,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:17:47,611 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 7 states. [2019-12-07 17:17:47,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:17:47,643 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-12-07 17:17:47,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 17:17:47,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-12-07 17:17:47,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:17:47,644 INFO L225 Difference]: With dead ends: 23 [2019-12-07 17:17:47,644 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 17:17:47,644 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-12-07 17:17:47,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 17:17:47,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2019-12-07 17:17:47,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 17:17:47,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-12-07 17:17:47,647 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 14 [2019-12-07 17:17:47,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:17:47,647 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2019-12-07 17:17:47,647 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 17:17:47,647 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2019-12-07 17:17:47,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 17:17:47,647 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:17:47,647 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:17:47,848 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:17:47,848 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 17:17:47,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:17:47,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1138822869, now seen corresponding path program 3 times [2019-12-07 17:17:47,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:17:47,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190296813] [2019-12-07 17:17:47,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:17:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:47,892 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190296813] [2019-12-07 17:17:47,892 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593276218] [2019-12-07 17:17:47,892 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:17:47,917 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-07 17:17:47,917 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:17:47,918 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 17:17:47,919 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:17:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:47,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:17:47,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-12-07 17:17:47,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263159843] [2019-12-07 17:17:47,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 17:17:47,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:17:47,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 17:17:47,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-12-07 17:17:47,929 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 8 states. [2019-12-07 17:17:47,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:17:47,958 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2019-12-07 17:17:47,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 17:17:47,959 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-12-07 17:17:47,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:17:47,959 INFO L225 Difference]: With dead ends: 26 [2019-12-07 17:17:47,959 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 17:17:47,960 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-12-07 17:17:47,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 17:17:47,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-12-07 17:17:47,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 17:17:47,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2019-12-07 17:17:47,962 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 17 [2019-12-07 17:17:47,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:17:47,962 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2019-12-07 17:17:47,962 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 17:17:47,962 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2019-12-07 17:17:47,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 17:17:47,963 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:17:47,963 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:17:48,163 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:17:48,164 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 17:17:48,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:17:48,165 INFO L82 PathProgramCache]: Analyzing trace with hash 727015860, now seen corresponding path program 4 times [2019-12-07 17:17:48,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:17:48,165 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081227096] [2019-12-07 17:17:48,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:17:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:48,237 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:48,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081227096] [2019-12-07 17:17:48,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140111030] [2019-12-07 17:17:48,237 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:17:48,260 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 17:17:48,260 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:17:48,261 INFO L264 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 17:17:48,262 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:17:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:48,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:17:48,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2019-12-07 17:17:48,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507977702] [2019-12-07 17:17:48,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 17:17:48,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:17:48,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 17:17:48,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-07 17:17:48,273 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 9 states. [2019-12-07 17:17:48,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:17:48,307 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-12-07 17:17:48,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 17:17:48,307 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2019-12-07 17:17:48,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:17:48,308 INFO L225 Difference]: With dead ends: 29 [2019-12-07 17:17:48,308 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 17:17:48,308 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2019-12-07 17:17:48,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 17:17:48,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-12-07 17:17:48,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 17:17:48,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-12-07 17:17:48,311 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2019-12-07 17:17:48,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:17:48,311 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-12-07 17:17:48,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 17:17:48,311 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-12-07 17:17:48,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-07 17:17:48,312 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:17:48,312 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:17:48,513 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:17:48,514 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 17:17:48,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:17:48,515 INFO L82 PathProgramCache]: Analyzing trace with hash -988991883, now seen corresponding path program 5 times [2019-12-07 17:17:48,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:17:48,515 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456113820] [2019-12-07 17:17:48,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:17:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:48,596 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:48,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456113820] [2019-12-07 17:17:48,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403316455] [2019-12-07 17:17:48,597 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer/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 [2019-12-07 17:17:48,643 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-12-07 17:17:48,643 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:17:48,644 INFO L264 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 17:17:48,645 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:17:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:48,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:17:48,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2019-12-07 17:17:48,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407000871] [2019-12-07 17:17:48,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 17:17:48,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:17:48,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 17:17:48,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-12-07 17:17:48,658 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 10 states. [2019-12-07 17:17:48,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:17:48,702 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2019-12-07 17:17:48,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 17:17:48,703 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2019-12-07 17:17:48,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:17:48,703 INFO L225 Difference]: With dead ends: 32 [2019-12-07 17:17:48,703 INFO L226 Difference]: Without dead ends: 32 [2019-12-07 17:17:48,704 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2019-12-07 17:17:48,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-07 17:17:48,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-12-07 17:17:48,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 17:17:48,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2019-12-07 17:17:48,707 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2019-12-07 17:17:48,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:17:48,708 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2019-12-07 17:17:48,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 17:17:48,708 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2019-12-07 17:17:48,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-07 17:17:48,709 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:17:48,709 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:17:48,909 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:17:48,910 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 17:17:48,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:17:48,911 INFO L82 PathProgramCache]: Analyzing trace with hash 420060692, now seen corresponding path program 6 times [2019-12-07 17:17:48,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:17:48,911 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6441162] [2019-12-07 17:17:48,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:17:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:49,074 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6441162] [2019-12-07 17:17:49,074 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916583534] [2019-12-07 17:17:49,074 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:17:49,118 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-12-07 17:17:49,118 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:17:49,119 INFO L264 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 17:17:49,120 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:17:49,133 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:49,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:17:49,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2019-12-07 17:17:49,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109886451] [2019-12-07 17:17:49,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 17:17:49,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:17:49,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 17:17:49,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2019-12-07 17:17:49,135 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 11 states. [2019-12-07 17:17:49,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:17:49,179 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2019-12-07 17:17:49,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 17:17:49,180 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2019-12-07 17:17:49,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:17:49,180 INFO L225 Difference]: With dead ends: 35 [2019-12-07 17:17:49,180 INFO L226 Difference]: Without dead ends: 35 [2019-12-07 17:17:49,184 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2019-12-07 17:17:49,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-12-07 17:17:49,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-12-07 17:17:49,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 17:17:49,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2019-12-07 17:17:49,188 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 26 [2019-12-07 17:17:49,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:17:49,188 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2019-12-07 17:17:49,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 17:17:49,188 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2019-12-07 17:17:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-12-07 17:17:49,189 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:17:49,189 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:17:49,389 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:17:49,390 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 17:17:49,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:17:49,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1505028587, now seen corresponding path program 7 times [2019-12-07 17:17:49,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:17:49,392 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105155188] [2019-12-07 17:17:49,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:17:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:49,556 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:49,557 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105155188] [2019-12-07 17:17:49,557 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956229161] [2019-12-07 17:17:49,557 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer/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 [2019-12-07 17:17:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:49,595 INFO L264 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 17:17:49,596 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:17:49,607 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:49,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:17:49,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2019-12-07 17:17:49,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920609091] [2019-12-07 17:17:49,608 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 17:17:49,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:17:49,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 17:17:49,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2019-12-07 17:17:49,609 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 12 states. [2019-12-07 17:17:49,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:17:49,655 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2019-12-07 17:17:49,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 17:17:49,655 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2019-12-07 17:17:49,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:17:49,656 INFO L225 Difference]: With dead ends: 38 [2019-12-07 17:17:49,656 INFO L226 Difference]: Without dead ends: 38 [2019-12-07 17:17:49,656 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=69, Invalid=87, Unknown=0, NotChecked=0, Total=156 [2019-12-07 17:17:49,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-07 17:17:49,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2019-12-07 17:17:49,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 17:17:49,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2019-12-07 17:17:49,659 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 29 [2019-12-07 17:17:49,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:17:49,659 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2019-12-07 17:17:49,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 17:17:49,659 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2019-12-07 17:17:49,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-07 17:17:49,660 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:17:49,660 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:17:49,860 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:17:49,860 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 17:17:49,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:17:49,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1141435788, now seen corresponding path program 8 times [2019-12-07 17:17:49,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:17:49,861 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862900109] [2019-12-07 17:17:49,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:17:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:49,934 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862900109] [2019-12-07 17:17:49,934 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906964785] [2019-12-07 17:17:49,934 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:17:49,971 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 17:17:49,971 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:17:49,972 INFO L264 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 17:17:49,973 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:17:49,982 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:49,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:17:49,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2019-12-07 17:17:49,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359627743] [2019-12-07 17:17:49,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 17:17:49,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:17:49,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 17:17:49,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2019-12-07 17:17:49,984 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 13 states. [2019-12-07 17:17:50,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:17:50,023 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2019-12-07 17:17:50,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 17:17:50,023 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2019-12-07 17:17:50,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:17:50,024 INFO L225 Difference]: With dead ends: 41 [2019-12-07 17:17:50,024 INFO L226 Difference]: Without dead ends: 41 [2019-12-07 17:17:50,024 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2019-12-07 17:17:50,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-12-07 17:17:50,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2019-12-07 17:17:50,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-12-07 17:17:50,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2019-12-07 17:17:50,027 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 32 [2019-12-07 17:17:50,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:17:50,027 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2019-12-07 17:17:50,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 17:17:50,027 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2019-12-07 17:17:50,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-12-07 17:17:50,027 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:17:50,028 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:17:50,228 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:17:50,229 INFO L410 AbstractCegarLoop]: === Iteration 13 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 17:17:50,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:17:50,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1255881291, now seen corresponding path program 9 times [2019-12-07 17:17:50,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:17:50,230 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273125551] [2019-12-07 17:17:50,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:17:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:50,383 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:50,384 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273125551] [2019-12-07 17:17:50,384 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349181734] [2019-12-07 17:17:50,384 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer/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 [2019-12-07 17:17:50,440 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-12-07 17:17:50,440 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:17:50,441 INFO L264 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 17:17:50,443 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:17:50,453 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:17:50,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:17:50,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 14 [2019-12-07 17:17:50,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118928482] [2019-12-07 17:17:50,454 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-07 17:17:50,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:17:50,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 17:17:50,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2019-12-07 17:17:50,454 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 14 states. [2019-12-07 17:17:50,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:17:50,497 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2019-12-07 17:17:50,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 17:17:50,497 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2019-12-07 17:17:50,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:17:50,498 INFO L225 Difference]: With dead ends: 42 [2019-12-07 17:17:50,498 INFO L226 Difference]: Without dead ends: 42 [2019-12-07 17:17:50,498 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=116, Unknown=0, NotChecked=0, Total=210 [2019-12-07 17:17:50,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-12-07 17:17:50,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-12-07 17:17:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-12-07 17:17:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2019-12-07 17:17:50,501 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 35 [2019-12-07 17:17:50,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:17:50,501 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2019-12-07 17:17:50,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-07 17:17:50,501 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2019-12-07 17:17:50,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-12-07 17:17:50,502 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:17:50,502 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:17:50,702 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:17:50,703 INFO L410 AbstractCegarLoop]: === Iteration 14 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 17:17:50,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:17:50,704 INFO L82 PathProgramCache]: Analyzing trace with hash -497828140, now seen corresponding path program 10 times [2019-12-07 17:17:50,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:17:50,704 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515117866] [2019-12-07 17:17:50,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:17:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:17:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:17:50,791 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:17:50,791 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 17:17:50,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:17:50 BoogieIcfgContainer [2019-12-07 17:17:50,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:17:50,815 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:17:50,815 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:17:50,815 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:17:50,815 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:17:46" (3/4) ... [2019-12-07 17:17:50,817 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 17:17:50,856 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_648590e4-2319-439e-a261-f783f5851d36/bin/uautomizer/witness.graphml [2019-12-07 17:17:50,856 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:17:50,857 INFO L168 Benchmark]: Toolchain (without parser) took 4533.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 944.7 MB in the beginning and 941.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 106.6 MB. Max. memory is 11.5 GB. [2019-12-07 17:17:50,857 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:17:50,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.12 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -154.0 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2019-12-07 17:17:50,858 INFO L168 Benchmark]: Boogie Preprocessor took 20.59 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. [2019-12-07 17:17:50,858 INFO L168 Benchmark]: RCFGBuilder took 157.61 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-12-07 17:17:50,858 INFO L168 Benchmark]: TraceAbstraction took 4127.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 943.7 MB in the end (delta: 138.0 MB). Peak memory consumption was 138.0 MB. Max. memory is 11.5 GB. [2019-12-07 17:17:50,859 INFO L168 Benchmark]: Witness Printer took 40.98 ms. Allocated memory is still 1.1 GB. Free memory was 943.7 MB in the beginning and 941.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:17:50,860 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 184.12 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -154.0 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.59 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 157.61 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4127.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 943.7 MB in the end (delta: 138.0 MB). Peak memory consumption was 138.0 MB. Max. memory is 11.5 GB. * Witness Printer took 40.98 ms. Allocated memory is still 1.1 GB. Free memory was 943.7 MB in the beginning and 941.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L2] int* p; [L3] int i = 0; VAL [i=0] [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={3:0}, i=0, p={3:0}] [L6] p[0] = 1 VAL [a={3:0}, i=0, p={3:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={4:0}, i=1, p={4:0}] [L6] p[0] = 1 VAL [a={4:0}, i=1, p={4:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={5:0}, i=2, p={5:0}] [L6] p[0] = 1 VAL [a={5:0}, i=2, p={5:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={6:0}, i=3, p={6:0}] [L6] p[0] = 1 VAL [a={6:0}, i=3, p={6:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={7:0}, i=4, p={7:0}] [L6] p[0] = 1 VAL [a={7:0}, i=4, p={7:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={8:0}, i=5, p={8:0}] [L6] p[0] = 1 VAL [a={8:0}, i=5, p={8:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={9:0}, i=6, p={9:0}] [L6] p[0] = 1 VAL [a={9:0}, i=6, p={9:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={10:0}, i=7, p={10:0}] [L6] p[0] = 1 VAL [a={10:0}, i=7, p={10:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={11:0}, i=8, p={11:0}] [L6] p[0] = 1 VAL [a={11:0}, i=8, p={11:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={2:0}, i=9, p={2:0}] [L6] p[0] = 1 VAL [a={2:0}, i=9, p={2:0}] [L3] i++ [L3] COND FALSE !(i < 10) VAL [i=10, p={2:0}] [L8] p[0] = 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 5 error locations. Result: UNSAFE, OverallTime: 4.0s, OverallIterations: 14, TraceHistogramMax: 10, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 146 SDtfs, 132 SDslu, 533 SDs, 0 SdLazy, 398 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 315 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 22 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 484 NumberOfCodeBlocks, 480 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 424 ConstructedInterpolants, 0 QuantifiedInterpolants, 26952 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1181 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 22 InterpolantComputations, 4 PerfectInterpolantSequences, 0/810 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...