./Ultimate.py --spec ../../sv-benchmarks/c/MemSafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/getNumbers1_false-valid-deref.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/getNumbers1_false-valid-deref.c -s /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/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 1b1751fe95f9cf655681429038c1cde9e9c074e8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.23-5842f4b [2018-11-18 14:38:45,871 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 14:38:45,873 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 14:38:45,889 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 14:38:45,892 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 14:38:45,892 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 14:38:45,893 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 14:38:45,895 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 14:38:45,896 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 14:38:45,897 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 14:38:45,897 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 14:38:45,897 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 14:38:45,898 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 14:38:45,899 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 14:38:45,900 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 14:38:45,908 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 14:38:45,909 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 14:38:45,910 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 14:38:45,911 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 14:38:45,917 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 14:38:45,917 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 14:38:45,918 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 14:38:45,920 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 14:38:45,920 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 14:38:45,921 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 14:38:45,921 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 14:38:45,922 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 14:38:45,922 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 14:38:45,923 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 14:38:45,924 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 14:38:45,924 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 14:38:45,924 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 14:38:45,925 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 14:38:45,925 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 14:38:45,925 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 14:38:45,926 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 14:38:45,926 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-18 14:38:45,936 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 14:38:45,936 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 14:38:45,937 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 14:38:45,937 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 14:38:45,937 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 14:38:45,938 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 14:38:45,938 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 14:38:45,938 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 14:38:45,938 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 14:38:45,938 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 14:38:45,938 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 14:38:45,938 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-18 14:38:45,939 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-18 14:38:45,939 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-18 14:38:45,939 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 14:38:45,939 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 14:38:45,939 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 14:38:45,939 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 14:38:45,939 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 14:38:45,940 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 14:38:45,942 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 14:38:45,942 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 14:38:45,942 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 14:38:45,942 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 14:38:45,942 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 14:38:45,942 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 14:38:45,942 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/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 -> 1b1751fe95f9cf655681429038c1cde9e9c074e8 [2018-11-18 14:38:45,967 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 14:38:45,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 14:38:45,980 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 14:38:45,981 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 14:38:45,982 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 14:38:45,982 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/uautomizer/../../sv-benchmarks/c/memsafety-ext3/getNumbers1_false-valid-deref.c [2018-11-18 14:38:46,028 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/uautomizer/data/0c2f31ec2/adc5d2933e394e33a5ef1f40abb68833/FLAG27326ac8e [2018-11-18 14:38:46,375 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 14:38:46,376 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/sv-benchmarks/c/memsafety-ext3/getNumbers1_false-valid-deref.c [2018-11-18 14:38:46,381 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/uautomizer/data/0c2f31ec2/adc5d2933e394e33a5ef1f40abb68833/FLAG27326ac8e [2018-11-18 14:38:46,395 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/uautomizer/data/0c2f31ec2/adc5d2933e394e33a5ef1f40abb68833 [2018-11-18 14:38:46,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 14:38:46,398 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 14:38:46,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 14:38:46,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 14:38:46,401 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 14:38:46,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:38:46" (1/1) ... [2018-11-18 14:38:46,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5480e679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:38:46, skipping insertion in model container [2018-11-18 14:38:46,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:38:46" (1/1) ... [2018-11-18 14:38:46,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 14:38:46,434 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 14:38:46,574 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:38:46,582 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 14:38:46,594 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:38:46,609 INFO L195 MainTranslator]: Completed translation [2018-11-18 14:38:46,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:38:46 WrapperNode [2018-11-18 14:38:46,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 14:38:46,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 14:38:46,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 14:38:46,610 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 14:38:46,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:38:46" (1/1) ... [2018-11-18 14:38:46,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:38:46" (1/1) ... [2018-11-18 14:38:46,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:38:46" (1/1) ... [2018-11-18 14:38:46,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:38:46" (1/1) ... [2018-11-18 14:38:46,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:38:46" (1/1) ... [2018-11-18 14:38:46,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:38:46" (1/1) ... [2018-11-18 14:38:46,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:38:46" (1/1) ... [2018-11-18 14:38:46,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 14:38:46,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 14:38:46,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 14:38:46,645 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 14:38:46,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:38:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/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 [2018-11-18 14:38:46,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 14:38:46,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 14:38:46,760 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers [2018-11-18 14:38:46,760 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 14:38:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2018-11-18 14:38:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-18 14:38:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers [2018-11-18 14:38:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 14:38:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 14:38:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 14:38:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 14:38:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 14:38:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 14:38:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 14:38:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 14:38:47,097 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 14:38:47,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:38:47 BoogieIcfgContainer [2018-11-18 14:38:47,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 14:38:47,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 14:38:47,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 14:38:47,101 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 14:38:47,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:38:46" (1/3) ... [2018-11-18 14:38:47,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f82801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:38:47, skipping insertion in model container [2018-11-18 14:38:47,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:38:46" (2/3) ... [2018-11-18 14:38:47,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f82801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:38:47, skipping insertion in model container [2018-11-18 14:38:47,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:38:47" (3/3) ... [2018-11-18 14:38:47,105 INFO L112 eAbstractionObserver]: Analyzing ICFG getNumbers1_false-valid-deref.c [2018-11-18 14:38:47,114 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 14:38:47,124 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-11-18 14:38:47,135 INFO L257 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2018-11-18 14:38:47,155 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 14:38:47,155 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 14:38:47,156 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-18 14:38:47,156 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 14:38:47,156 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 14:38:47,156 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 14:38:47,156 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 14:38:47,156 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 14:38:47,156 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 14:38:47,173 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-11-18 14:38:47,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 14:38:47,186 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:38:47,186 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:38:47,194 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-18 14:38:47,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:38:47,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1121499465, now seen corresponding path program 1 times [2018-11-18 14:38:47,200 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:38:47,201 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:38:47,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:47,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:38:47,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:38:47,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:38:47,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:38:47,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 14:38:47,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 14:38:47,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 14:38:47,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 14:38:47,426 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2018-11-18 14:38:47,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:38:47,483 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-11-18 14:38:47,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 14:38:47,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-18 14:38:47,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:38:47,491 INFO L225 Difference]: With dead ends: 29 [2018-11-18 14:38:47,491 INFO L226 Difference]: Without dead ends: 26 [2018-11-18 14:38:47,493 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 14:38:47,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-18 14:38:47,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-18 14:38:47,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 14:38:47,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-11-18 14:38:47,521 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 10 [2018-11-18 14:38:47,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:38:47,521 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-11-18 14:38:47,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 14:38:47,521 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-11-18 14:38:47,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 14:38:47,522 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:38:47,522 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:38:47,522 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-18 14:38:47,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:38:47,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1121499466, now seen corresponding path program 1 times [2018-11-18 14:38:47,523 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:38:47,523 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:38:47,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:47,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:38:47,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:38:47,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:38:47,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:38:47,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 14:38:47,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 14:38:47,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 14:38:47,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 14:38:47,606 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 3 states. [2018-11-18 14:38:47,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:38:47,688 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-11-18 14:38:47,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 14:38:47,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-18 14:38:47,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:38:47,689 INFO L225 Difference]: With dead ends: 30 [2018-11-18 14:38:47,689 INFO L226 Difference]: Without dead ends: 30 [2018-11-18 14:38:47,690 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 14:38:47,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-18 14:38:47,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2018-11-18 14:38:47,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-18 14:38:47,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-11-18 14:38:47,694 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 10 [2018-11-18 14:38:47,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:38:47,694 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-11-18 14:38:47,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 14:38:47,694 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-11-18 14:38:47,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 14:38:47,695 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:38:47,695 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:38:47,695 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-18 14:38:47,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:38:47,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1239312801, now seen corresponding path program 1 times [2018-11-18 14:38:47,696 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:38:47,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:38:47,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:47,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:38:47,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:38:47,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:38:47,958 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:38:47,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 14:38:47,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 14:38:47,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 14:38:47,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 14:38:47,959 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 6 states. [2018-11-18 14:38:48,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:38:48,036 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-11-18 14:38:48,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 14:38:48,038 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-11-18 14:38:48,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:38:48,039 INFO L225 Difference]: With dead ends: 29 [2018-11-18 14:38:48,039 INFO L226 Difference]: Without dead ends: 29 [2018-11-18 14:38:48,039 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 14:38:48,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-18 14:38:48,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2018-11-18 14:38:48,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-18 14:38:48,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-11-18 14:38:48,042 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 14 [2018-11-18 14:38:48,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:38:48,042 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-11-18 14:38:48,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 14:38:48,043 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-11-18 14:38:48,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 14:38:48,043 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:38:48,043 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:38:48,043 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-18 14:38:48,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:38:48,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1597733685, now seen corresponding path program 1 times [2018-11-18 14:38:48,044 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:38:48,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:38:48,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:48,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:38:48,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:38:48,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:38:48,094 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:38:48,094 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:38:48,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:38:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:38:48,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:38:48,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:38:48,180 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 14:38:48,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-11-18 14:38:48,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 14:38:48,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 14:38:48,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-18 14:38:48,183 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 5 states. [2018-11-18 14:38:48,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:38:48,235 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-11-18 14:38:48,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 14:38:48,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-11-18 14:38:48,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:38:48,236 INFO L225 Difference]: With dead ends: 33 [2018-11-18 14:38:48,236 INFO L226 Difference]: Without dead ends: 33 [2018-11-18 14:38:48,236 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-18 14:38:48,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-18 14:38:48,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2018-11-18 14:38:48,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-18 14:38:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-11-18 14:38:48,239 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 20 [2018-11-18 14:38:48,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:38:48,239 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-11-18 14:38:48,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 14:38:48,239 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-11-18 14:38:48,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 14:38:48,239 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:38:48,239 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:38:48,239 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-18 14:38:48,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:38:48,240 INFO L82 PathProgramCache]: Analyzing trace with hash -123868468, now seen corresponding path program 2 times [2018-11-18 14:38:48,240 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:38:48,240 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:38:48,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:48,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:38:48,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:38:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:38:48,334 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:38:48,334 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:38:48,346 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 14:38:48,369 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 14:38:48,369 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:38:48,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:38:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:38:48,414 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 14:38:48,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-18 14:38:48,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 14:38:48,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 14:38:48,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 14:38:48,415 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 6 states. [2018-11-18 14:38:48,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:38:48,435 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-11-18 14:38:48,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 14:38:48,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-11-18 14:38:48,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:38:48,436 INFO L225 Difference]: With dead ends: 37 [2018-11-18 14:38:48,437 INFO L226 Difference]: Without dead ends: 37 [2018-11-18 14:38:48,437 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 14:38:48,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-18 14:38:48,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2018-11-18 14:38:48,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 14:38:48,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-11-18 14:38:48,440 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 24 [2018-11-18 14:38:48,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:38:48,440 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-11-18 14:38:48,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 14:38:48,440 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-11-18 14:38:48,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 14:38:48,441 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:38:48,441 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:38:48,441 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-18 14:38:48,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:38:48,442 INFO L82 PathProgramCache]: Analyzing trace with hash 897627875, now seen corresponding path program 3 times [2018-11-18 14:38:48,442 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:38:48,442 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:38:48,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:48,443 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:38:48,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:38:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:38:48,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:38:48,513 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:38:48,530 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 14:38:48,554 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 14:38:48,555 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:38:48,556 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:38:48,568 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:38:48,587 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 14:38:48,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-18 14:38:48,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 14:38:48,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 14:38:48,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-18 14:38:48,588 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 7 states. [2018-11-18 14:38:48,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:38:48,657 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-11-18 14:38:48,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 14:38:48,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2018-11-18 14:38:48,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:38:48,659 INFO L225 Difference]: With dead ends: 41 [2018-11-18 14:38:48,659 INFO L226 Difference]: Without dead ends: 41 [2018-11-18 14:38:48,659 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-18 14:38:48,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-18 14:38:48,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2018-11-18 14:38:48,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-18 14:38:48,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-11-18 14:38:48,663 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 28 [2018-11-18 14:38:48,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:38:48,663 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-11-18 14:38:48,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 14:38:48,664 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-11-18 14:38:48,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 14:38:48,666 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:38:48,667 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:38:48,667 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-18 14:38:48,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:38:48,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1835114362, now seen corresponding path program 4 times [2018-11-18 14:38:48,667 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:38:48,668 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:38:48,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:48,668 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:38:48,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:38:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:38:48,808 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:38:48,808 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:38:48,815 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 14:38:48,847 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 14:38:48,848 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:38:48,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:38:48,872 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:38:48,914 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 14:38:48,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-18 14:38:48,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 14:38:48,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 14:38:48,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-18 14:38:48,916 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 8 states. [2018-11-18 14:38:48,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:38:48,973 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2018-11-18 14:38:48,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 14:38:48,973 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-11-18 14:38:48,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:38:48,974 INFO L225 Difference]: With dead ends: 45 [2018-11-18 14:38:48,974 INFO L226 Difference]: Without dead ends: 45 [2018-11-18 14:38:48,975 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-18 14:38:48,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-18 14:38:48,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2018-11-18 14:38:48,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 14:38:48,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-11-18 14:38:48,979 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 32 [2018-11-18 14:38:48,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:38:48,979 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-11-18 14:38:48,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 14:38:48,980 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-11-18 14:38:48,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 14:38:48,980 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:38:48,980 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:38:48,981 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-18 14:38:48,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:38:48,981 INFO L82 PathProgramCache]: Analyzing trace with hash -2099354479, now seen corresponding path program 5 times [2018-11-18 14:38:48,981 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:38:48,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:38:48,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:48,982 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:38:48,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:38:49,067 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:38:49,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:38:49,068 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:38:49,093 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 14:38:49,151 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-18 14:38:49,151 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:38:49,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:38:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:38:49,188 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 14:38:49,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-11-18 14:38:49,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 14:38:49,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 14:38:49,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-18 14:38:49,189 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 9 states. [2018-11-18 14:38:49,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:38:49,252 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2018-11-18 14:38:49,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 14:38:49,253 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-11-18 14:38:49,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:38:49,254 INFO L225 Difference]: With dead ends: 49 [2018-11-18 14:38:49,254 INFO L226 Difference]: Without dead ends: 49 [2018-11-18 14:38:49,254 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-18 14:38:49,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-18 14:38:49,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2018-11-18 14:38:49,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-18 14:38:49,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2018-11-18 14:38:49,259 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 36 [2018-11-18 14:38:49,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:38:49,259 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2018-11-18 14:38:49,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 14:38:49,259 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2018-11-18 14:38:49,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-18 14:38:49,260 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:38:49,260 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:38:49,260 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-18 14:38:49,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:38:49,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1404356136, now seen corresponding path program 6 times [2018-11-18 14:38:49,261 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:38:49,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:38:49,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:49,262 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:38:49,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:38:49,367 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:38:49,367 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:38:49,368 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:38:49,377 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 14:38:49,436 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-18 14:38:49,436 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:38:49,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:38:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:38:49,495 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 14:38:49,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-11-18 14:38:49,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 14:38:49,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 14:38:49,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-18 14:38:49,497 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 10 states. [2018-11-18 14:38:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:38:49,579 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2018-11-18 14:38:49,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 14:38:49,584 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2018-11-18 14:38:49,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:38:49,585 INFO L225 Difference]: With dead ends: 53 [2018-11-18 14:38:49,585 INFO L226 Difference]: Without dead ends: 53 [2018-11-18 14:38:49,586 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-18 14:38:49,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-18 14:38:49,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2018-11-18 14:38:49,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-18 14:38:49,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-11-18 14:38:49,594 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 40 [2018-11-18 14:38:49,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:38:49,594 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-11-18 14:38:49,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 14:38:49,594 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-11-18 14:38:49,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-18 14:38:49,595 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:38:49,595 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:38:49,595 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-18 14:38:49,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:38:49,596 INFO L82 PathProgramCache]: Analyzing trace with hash 683836479, now seen corresponding path program 7 times [2018-11-18 14:38:49,596 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:38:49,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:38:49,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:49,597 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:38:49,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:38:49,917 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:38:49,918 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:38:49,918 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:38:49,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:38:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:38:49,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:38:50,045 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:38:50,071 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 14:38:50,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-11-18 14:38:50,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 14:38:50,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 14:38:50,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-18 14:38:50,072 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 11 states. [2018-11-18 14:38:50,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:38:50,303 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2018-11-18 14:38:50,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 14:38:50,304 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2018-11-18 14:38:50,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:38:50,305 INFO L225 Difference]: With dead ends: 57 [2018-11-18 14:38:50,305 INFO L226 Difference]: Without dead ends: 57 [2018-11-18 14:38:50,305 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-18 14:38:50,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-18 14:38:50,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2018-11-18 14:38:50,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-18 14:38:50,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2018-11-18 14:38:50,311 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 44 [2018-11-18 14:38:50,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:38:50,311 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2018-11-18 14:38:50,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 14:38:50,311 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2018-11-18 14:38:50,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-18 14:38:50,312 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:38:50,312 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:38:50,312 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-18 14:38:50,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:38:50,312 INFO L82 PathProgramCache]: Analyzing trace with hash 637886166, now seen corresponding path program 8 times [2018-11-18 14:38:50,312 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:38:50,312 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:38:50,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:50,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:38:50,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:38:50,472 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:38:50,472 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:38:50,472 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:38:50,479 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 14:38:50,497 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 14:38:50,497 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:38:50,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:38:50,521 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:38:50,542 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 14:38:50,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-11-18 14:38:50,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 14:38:50,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 14:38:50,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-18 14:38:50,543 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 12 states. [2018-11-18 14:38:50,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:38:50,591 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2018-11-18 14:38:50,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 14:38:50,592 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2018-11-18 14:38:50,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:38:50,592 INFO L225 Difference]: With dead ends: 61 [2018-11-18 14:38:50,592 INFO L226 Difference]: Without dead ends: 61 [2018-11-18 14:38:50,592 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-18 14:38:50,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-11-18 14:38:50,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2018-11-18 14:38:50,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-18 14:38:50,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2018-11-18 14:38:50,596 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 48 [2018-11-18 14:38:50,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:38:50,596 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2018-11-18 14:38:50,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 14:38:50,596 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2018-11-18 14:38:50,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-18 14:38:50,597 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:38:50,598 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:38:50,598 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-18 14:38:50,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:38:50,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1164241427, now seen corresponding path program 9 times [2018-11-18 14:38:50,599 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:38:50,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:38:50,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:50,600 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:38:50,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:38:50,792 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:38:50,793 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:38:50,793 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:38:50,800 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 14:38:50,889 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-18 14:38:50,889 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:38:50,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:38:50,910 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:38:50,928 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 14:38:50,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-11-18 14:38:50,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 14:38:50,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 14:38:50,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-18 14:38:50,929 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 13 states. [2018-11-18 14:38:50,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:38:50,988 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2018-11-18 14:38:50,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 14:38:50,988 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2018-11-18 14:38:50,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:38:50,989 INFO L225 Difference]: With dead ends: 63 [2018-11-18 14:38:50,989 INFO L226 Difference]: Without dead ends: 63 [2018-11-18 14:38:50,989 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-18 14:38:50,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-11-18 14:38:50,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-11-18 14:38:50,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-18 14:38:50,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-11-18 14:38:50,991 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 52 [2018-11-18 14:38:50,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:38:50,991 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-11-18 14:38:50,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 14:38:50,991 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-11-18 14:38:50,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-18 14:38:50,992 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:38:50,992 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:38:50,992 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-18 14:38:50,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:38:50,992 INFO L82 PathProgramCache]: Analyzing trace with hash 281110916, now seen corresponding path program 10 times [2018-11-18 14:38:50,992 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:38:50,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:38:50,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:50,993 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:38:50,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:38:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:38:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:38:51,042 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 14:38:51,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 02:38:51 BoogieIcfgContainer [2018-11-18 14:38:51,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 14:38:51,083 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 14:38:51,083 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 14:38:51,083 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 14:38:51,083 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:38:47" (3/4) ... [2018-11-18 14:38:51,085 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 14:38:51,137 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1b96e8c3-35e7-433c-b72d-505b48ca8602/bin-2019/uautomizer/witness.graphml [2018-11-18 14:38:51,137 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 14:38:51,137 INFO L168 Benchmark]: Toolchain (without parser) took 4740.05 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 234.9 MB). Free memory was 954.4 MB in the beginning and 1.2 GB in the end (delta: -216.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2018-11-18 14:38:51,139 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 977.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:38:51,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 210.66 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:38:51,139 INFO L168 Benchmark]: Boogie Preprocessor took 34.82 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 938.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 14:38:51,140 INFO L168 Benchmark]: RCFGBuilder took 453.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 184.5 MB). Free memory was 938.3 MB in the beginning and 1.2 GB in the end (delta: -226.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 14:38:51,140 INFO L168 Benchmark]: TraceAbstraction took 3983.76 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 50.3 MB). Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -6.5 MB). Peak memory consumption was 43.8 MB. Max. memory is 11.5 GB. [2018-11-18 14:38:51,141 INFO L168 Benchmark]: Witness Printer took 54.21 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:38:51,143 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 977.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 210.66 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.82 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 938.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 453.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 184.5 MB). Free memory was 938.3 MB in the beginning and 1.2 GB in the end (delta: -226.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3983.76 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 50.3 MB). Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -6.5 MB). Peak memory consumption was 43.8 MB. Max. memory is 11.5 GB. * Witness Printer took 54.21 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 22]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L22] FCALL "%d\n" VAL ["%d\n"={106:0}, \old("%d\n")=104, \old("%d\n")=102] [L19] CALL, EXPR getNumbers() VAL ["%d\n"={106:0}] [L8] EXPR, FCALL alloca(10 * sizeof(int)) [L8] int *array = alloca(10 * sizeof(int)); [L10] int i = 0; VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=0] [L10] COND TRUE i < 10 VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=0] [L11] FCALL array[i] = i VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=0] [L10] ++i VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=1] [L10] COND TRUE i < 10 VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=1] [L11] FCALL array[i] = i VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=1] [L10] ++i VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=2] [L10] COND TRUE i < 10 VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=2] [L11] FCALL array[i] = i VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=2] [L10] ++i VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=3] [L10] COND TRUE i < 10 VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=3] [L11] FCALL array[i] = i VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=3] [L10] ++i VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=4] [L10] COND TRUE i < 10 VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=4] [L11] FCALL array[i] = i VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=4] [L10] ++i VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=5] [L10] COND TRUE i < 10 VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=5] [L11] FCALL array[i] = i VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=5] [L10] ++i VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=6] [L10] COND TRUE i < 10 VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=6] [L11] FCALL array[i] = i VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=6] [L10] ++i VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=7] [L10] COND TRUE i < 10 VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=7] [L11] FCALL array[i] = i VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=7] [L10] ++i VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=8] [L10] COND TRUE i < 10 VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=8] [L11] FCALL array[i] = i VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=8] [L10] ++i VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=9] [L10] COND TRUE i < 10 VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=9] [L11] FCALL array[i] = i VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=9] [L10] ++i VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=10] [L10] COND FALSE !(i < 10) VAL ["%d\n"={106:0}, alloca(10 * sizeof(int))={103:0}, array={103:0}, i=10] [L14] RET return array; [L19] EXPR getNumbers() VAL ["%d\n"={106:0}, getNumbers()={103:0}] [L19] int *numbers = getNumbers(); [L21] int i = 0; VAL ["%d\n"={106:0}, i=0, numbers={103:0}] [L21] COND TRUE i < 10 [L22] FCALL numbers + i - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 5 error locations. UNSAFE Result, 3.9s OverallTime, 13 OverallIterations, 11 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 280 SDtfs, 128 SDslu, 1168 SDs, 0 SdLazy, 289 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 397 GetRequests, 327 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 19 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 738 NumberOfCodeBlocks, 738 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 661 ConstructedInterpolants, 0 QuantifiedInterpolants, 57397 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1188 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 21 InterpolantComputations, 3 PerfectInterpolantSequences, 3/1143 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...