./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-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 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/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_214cffa2-af37-4f98-96c0-9f05b7c28e0f/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/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 0.1.23-0cd3be1 [2018-11-28 11:23:47,666 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:23:47,667 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:23:47,675 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:23:47,676 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:23:47,676 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:23:47,677 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:23:47,678 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:23:47,680 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:23:47,680 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:23:47,681 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:23:47,681 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:23:47,682 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:23:47,683 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:23:47,684 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:23:47,684 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:23:47,685 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:23:47,686 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:23:47,687 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:23:47,689 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:23:47,690 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:23:47,690 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:23:47,692 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:23:47,692 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:23:47,693 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:23:47,693 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:23:47,694 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:23:47,695 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:23:47,695 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:23:47,696 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:23:47,696 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:23:47,697 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:23:47,697 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:23:47,697 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:23:47,698 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:23:47,699 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:23:47,699 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 11:23:47,709 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:23:47,710 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:23:47,710 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 11:23:47,710 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 11:23:47,711 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:23:47,711 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:23:47,711 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:23:47,711 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:23:47,712 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 11:23:47,712 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 11:23:47,712 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 11:23:47,712 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 11:23:47,712 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:23:47,712 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 11:23:47,712 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 11:23:47,713 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 11:23:47,713 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 11:23:47,713 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 11:23:47,713 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:23:47,713 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:23:47,713 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:23:47,714 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 11:23:47,714 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 11:23:47,714 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:23:47,714 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:23:47,714 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 11:23:47,714 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 11:23:47,714 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 11:23:47,715 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_214cffa2-af37-4f98-96c0-9f05b7c28e0f/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 [2018-11-28 11:23:47,740 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:23:47,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:23:47,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:23:47,753 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:23:47,754 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:23:47,754 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/bin-2019/uautomizer/../../sv-benchmarks/c/memsafety-ext3/getNumbers1_false-valid-deref.c [2018-11-28 11:23:47,797 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/bin-2019/uautomizer/data/08744a6dd/be9faa822a10428aba849e0e2764e5c7/FLAG6fb2d5493 [2018-11-28 11:23:48,141 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:23:48,141 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/sv-benchmarks/c/memsafety-ext3/getNumbers1_false-valid-deref.c [2018-11-28 11:23:48,145 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/bin-2019/uautomizer/data/08744a6dd/be9faa822a10428aba849e0e2764e5c7/FLAG6fb2d5493 [2018-11-28 11:23:48,570 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/bin-2019/uautomizer/data/08744a6dd/be9faa822a10428aba849e0e2764e5c7 [2018-11-28 11:23:48,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:23:48,576 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 11:23:48,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:23:48,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:23:48,580 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:23:48,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:23:48" (1/1) ... [2018-11-28 11:23:48,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3375cb2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:48, skipping insertion in model container [2018-11-28 11:23:48,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:23:48" (1/1) ... [2018-11-28 11:23:48,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:23:48,607 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:23:48,716 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:23:48,724 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:23:48,735 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:23:48,747 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:23:48,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:48 WrapperNode [2018-11-28 11:23:48,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:23:48,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:23:48,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:23:48,748 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:23:48,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:48" (1/1) ... [2018-11-28 11:23:48,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:48" (1/1) ... [2018-11-28 11:23:48,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:48" (1/1) ... [2018-11-28 11:23:48,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:48" (1/1) ... [2018-11-28 11:23:48,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:48" (1/1) ... [2018-11-28 11:23:48,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:48" (1/1) ... [2018-11-28 11:23:48,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:48" (1/1) ... [2018-11-28 11:23:48,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:23:48,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:23:48,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:23:48,783 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:23:48,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/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 [2018-11-28 11:23:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 11:23:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:23:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers [2018-11-28 11:23:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 11:23:48,870 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2018-11-28 11:23:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 11:23:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers [2018-11-28 11:23:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 11:23:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 11:23:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 11:23:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 11:23:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 11:23:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 11:23:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-11-28 11:23:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:23:49,030 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:23:49,030 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 11:23:49,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:23:49 BoogieIcfgContainer [2018-11-28 11:23:49,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:23:49,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 11:23:49,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 11:23:49,035 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 11:23:49,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:23:48" (1/3) ... [2018-11-28 11:23:49,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5545b280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:23:49, skipping insertion in model container [2018-11-28 11:23:49,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:48" (2/3) ... [2018-11-28 11:23:49,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5545b280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:23:49, skipping insertion in model container [2018-11-28 11:23:49,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:23:49" (3/3) ... [2018-11-28 11:23:49,038 INFO L112 eAbstractionObserver]: Analyzing ICFG getNumbers1_false-valid-deref.c [2018-11-28 11:23:49,048 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 11:23:49,055 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-11-28 11:23:49,070 INFO L257 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2018-11-28 11:23:49,092 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:23:49,093 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 11:23:49,093 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 11:23:49,093 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 11:23:49,094 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:23:49,094 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:23:49,094 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 11:23:49,094 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:23:49,094 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 11:23:49,109 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-11-28 11:23:49,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 11:23:49,118 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:23:49,118 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:23:49,120 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-28 11:23:49,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:23:49,124 INFO L82 PathProgramCache]: Analyzing trace with hash 543879226, now seen corresponding path program 1 times [2018-11-28 11:23:49,126 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:23:49,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:23:49,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:49,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:23:49,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:23:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:49,251 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:23:49,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 11:23:49,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 11:23:49,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:23:49,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:23:49,264 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2018-11-28 11:23:49,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:23:49,315 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2018-11-28 11:23:49,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:23:49,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-28 11:23:49,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:23:49,323 INFO L225 Difference]: With dead ends: 27 [2018-11-28 11:23:49,323 INFO L226 Difference]: Without dead ends: 24 [2018-11-28 11:23:49,325 INFO L631 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 [2018-11-28 11:23:49,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-28 11:23:49,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-28 11:23:49,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 11:23:49,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-11-28 11:23:49,353 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 9 [2018-11-28 11:23:49,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:23:49,354 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-11-28 11:23:49,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 11:23:49,354 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-11-28 11:23:49,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 11:23:49,355 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:23:49,355 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:23:49,355 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-28 11:23:49,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:23:49,355 INFO L82 PathProgramCache]: Analyzing trace with hash 543879227, now seen corresponding path program 1 times [2018-11-28 11:23:49,356 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:23:49,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:23:49,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:49,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:23:49,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:23:49,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:49,426 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:23:49,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 11:23:49,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 11:23:49,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:23:49,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:23:49,428 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 3 states. [2018-11-28 11:23:49,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:23:49,462 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2018-11-28 11:23:49,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:23:49,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-28 11:23:49,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:23:49,463 INFO L225 Difference]: With dead ends: 27 [2018-11-28 11:23:49,463 INFO L226 Difference]: Without dead ends: 27 [2018-11-28 11:23:49,464 INFO L631 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 [2018-11-28 11:23:49,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-28 11:23:49,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2018-11-28 11:23:49,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-28 11:23:49,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-11-28 11:23:49,468 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 9 [2018-11-28 11:23:49,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:23:49,468 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-11-28 11:23:49,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 11:23:49,468 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-11-28 11:23:49,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 11:23:49,468 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:23:49,468 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:23:49,469 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-28 11:23:49,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:23:49,469 INFO L82 PathProgramCache]: Analyzing trace with hash 2089391026, now seen corresponding path program 1 times [2018-11-28 11:23:49,469 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:23:49,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:23:49,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:49,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:23:49,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:23:49,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:49,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:23:49,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 11:23:49,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 11:23:49,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 11:23:49,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 11:23:49,603 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 6 states. [2018-11-28 11:23:49,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:23:49,638 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-11-28 11:23:49,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 11:23:49,639 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-11-28 11:23:49,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:23:49,639 INFO L225 Difference]: With dead ends: 26 [2018-11-28 11:23:49,640 INFO L226 Difference]: Without dead ends: 26 [2018-11-28 11:23:49,640 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 11:23:49,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-28 11:23:49,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-11-28 11:23:49,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 11:23:49,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-11-28 11:23:49,645 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 12 [2018-11-28 11:23:49,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:23:49,645 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-11-28 11:23:49,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 11:23:49,645 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-11-28 11:23:49,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 11:23:49,646 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:23:49,646 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:23:49,646 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-28 11:23:49,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:23:49,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1673858648, now seen corresponding path program 1 times [2018-11-28 11:23:49,647 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:23:49,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:23:49,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:49,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:23:49,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:23:49,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:49,678 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:23:49,678 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/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 [2018-11-28 11:23:49,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:23:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:23:49,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:23:49,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:49,761 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:23:49,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-11-28 11:23:49,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 11:23:49,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 11:23:49,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:23:49,762 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2018-11-28 11:23:49,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:23:49,780 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-11-28 11:23:49,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 11:23:49,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-11-28 11:23:49,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:23:49,781 INFO L225 Difference]: With dead ends: 29 [2018-11-28 11:23:49,781 INFO L226 Difference]: Without dead ends: 29 [2018-11-28 11:23:49,782 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:23:49,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-28 11:23:49,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2018-11-28 11:23:49,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-28 11:23:49,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-11-28 11:23:49,785 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 17 [2018-11-28 11:23:49,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:23:49,786 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-11-28 11:23:49,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 11:23:49,786 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-11-28 11:23:49,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 11:23:49,787 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:23:49,787 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:23:49,787 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-28 11:23:49,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:23:49,787 INFO L82 PathProgramCache]: Analyzing trace with hash 2027302431, now seen corresponding path program 2 times [2018-11-28 11:23:49,787 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:23:49,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:23:49,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:49,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:23:49,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:23:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:49,842 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:23:49,842 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/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 [2018-11-28 11:23:49,860 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 11:23:49,887 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 11:23:49,887 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:23:49,888 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:23:49,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:49,926 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:23:49,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-28 11:23:49,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 11:23:49,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 11:23:49,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 11:23:49,927 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 6 states. [2018-11-28 11:23:49,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:23:49,948 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2018-11-28 11:23:49,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 11:23:49,948 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-11-28 11:23:49,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:23:49,949 INFO L225 Difference]: With dead ends: 32 [2018-11-28 11:23:49,949 INFO L226 Difference]: Without dead ends: 32 [2018-11-28 11:23:49,949 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 11:23:49,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-28 11:23:49,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-11-28 11:23:49,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-28 11:23:49,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2018-11-28 11:23:49,952 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 20 [2018-11-28 11:23:49,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:23:49,952 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2018-11-28 11:23:49,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 11:23:49,952 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2018-11-28 11:23:49,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 11:23:49,952 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:23:49,952 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:23:49,953 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-28 11:23:49,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:23:49,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1378383288, now seen corresponding path program 3 times [2018-11-28 11:23:49,953 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:23:49,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:23:49,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:49,954 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:23:49,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:23:50,001 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:50,001 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:23:50,001 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/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 [2018-11-28 11:23:50,012 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 11:23:50,037 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-28 11:23:50,038 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:23:50,039 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:23:50,052 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:50,067 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:23:50,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-28 11:23:50,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 11:23:50,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 11:23:50,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 11:23:50,068 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 7 states. [2018-11-28 11:23:50,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:23:50,102 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-11-28 11:23:50,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 11:23:50,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-11-28 11:23:50,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:23:50,104 INFO L225 Difference]: With dead ends: 35 [2018-11-28 11:23:50,104 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 11:23:50,104 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 11:23:50,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 11:23:50,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-28 11:23:50,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 11:23:50,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-11-28 11:23:50,109 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 23 [2018-11-28 11:23:50,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:23:50,110 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-11-28 11:23:50,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 11:23:50,110 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-11-28 11:23:50,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 11:23:50,111 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:23:50,111 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:23:50,111 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-28 11:23:50,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:23:50,112 INFO L82 PathProgramCache]: Analyzing trace with hash -149204609, now seen corresponding path program 4 times [2018-11-28 11:23:50,112 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:23:50,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:23:50,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:50,113 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:23:50,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:23:50,179 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:50,180 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:23:50,180 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/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 [2018-11-28 11:23:50,196 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 11:23:50,218 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 11:23:50,218 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:23:50,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:23:50,231 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:50,251 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:23:50,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-28 11:23:50,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 11:23:50,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 11:23:50,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 11:23:50,252 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 8 states. [2018-11-28 11:23:50,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:23:50,286 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2018-11-28 11:23:50,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 11:23:50,287 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-11-28 11:23:50,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:23:50,288 INFO L225 Difference]: With dead ends: 38 [2018-11-28 11:23:50,289 INFO L226 Difference]: Without dead ends: 38 [2018-11-28 11:23:50,289 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 11:23:50,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-28 11:23:50,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-11-28 11:23:50,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 11:23:50,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2018-11-28 11:23:50,293 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 26 [2018-11-28 11:23:50,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:23:50,293 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2018-11-28 11:23:50,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 11:23:50,294 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2018-11-28 11:23:50,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-28 11:23:50,296 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:23:50,296 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:23:50,296 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-28 11:23:50,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:23:50,297 INFO L82 PathProgramCache]: Analyzing trace with hash -578344216, now seen corresponding path program 5 times [2018-11-28 11:23:50,297 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:23:50,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:23:50,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:50,298 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:23:50,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:23:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:50,380 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:23:50,380 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/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 [2018-11-28 11:23:50,392 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 11:23:50,418 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-28 11:23:50,419 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:23:50,421 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:23:50,441 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:50,458 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:23:50,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-11-28 11:23:50,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 11:23:50,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 11:23:50,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-28 11:23:50,459 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 9 states. [2018-11-28 11:23:50,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:23:50,494 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-11-28 11:23:50,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 11:23:50,494 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-11-28 11:23:50,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:23:50,495 INFO L225 Difference]: With dead ends: 41 [2018-11-28 11:23:50,495 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 11:23:50,495 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-28 11:23:50,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 11:23:50,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2018-11-28 11:23:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 11:23:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-11-28 11:23:50,498 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 29 [2018-11-28 11:23:50,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:23:50,498 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-11-28 11:23:50,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 11:23:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-11-28 11:23:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 11:23:50,499 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:23:50,499 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:23:50,499 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-28 11:23:50,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:23:50,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1041263839, now seen corresponding path program 6 times [2018-11-28 11:23:50,500 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:23:50,500 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:23:50,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:50,500 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:23:50,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:23:50,577 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:50,577 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:23:50,578 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/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 [2018-11-28 11:23:50,593 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 11:23:50,625 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-28 11:23:50,625 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:23:50,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:23:50,638 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:50,655 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:23:50,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-11-28 11:23:50,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 11:23:50,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 11:23:50,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-28 11:23:50,656 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 10 states. [2018-11-28 11:23:50,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:23:50,720 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2018-11-28 11:23:50,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 11:23:50,722 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2018-11-28 11:23:50,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:23:50,723 INFO L225 Difference]: With dead ends: 44 [2018-11-28 11:23:50,723 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 11:23:50,724 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-28 11:23:50,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 11:23:50,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2018-11-28 11:23:50,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-28 11:23:50,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2018-11-28 11:23:50,728 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 32 [2018-11-28 11:23:50,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:23:50,729 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2018-11-28 11:23:50,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 11:23:50,729 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2018-11-28 11:23:50,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-28 11:23:50,730 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:23:50,730 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:23:50,730 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-28 11:23:50,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:23:50,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1122227080, now seen corresponding path program 7 times [2018-11-28 11:23:50,731 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:23:50,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:23:50,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:50,732 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:23:50,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:23:50,819 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:50,819 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:23:50,819 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/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 [2018-11-28 11:23:50,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:23:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:23:50,856 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:23:50,875 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:50,892 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:23:50,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-11-28 11:23:50,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 11:23:50,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 11:23:50,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 11:23:50,893 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 11 states. [2018-11-28 11:23:50,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:23:50,938 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2018-11-28 11:23:50,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 11:23:50,939 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2018-11-28 11:23:50,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:23:50,939 INFO L225 Difference]: With dead ends: 47 [2018-11-28 11:23:50,940 INFO L226 Difference]: Without dead ends: 47 [2018-11-28 11:23:50,940 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 11:23:50,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-28 11:23:50,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2018-11-28 11:23:50,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-28 11:23:50,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-11-28 11:23:50,943 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 35 [2018-11-28 11:23:50,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:23:50,943 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-11-28 11:23:50,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 11:23:50,944 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-11-28 11:23:50,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-28 11:23:50,946 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:23:50,946 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:23:50,947 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-28 11:23:50,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:23:50,947 INFO L82 PathProgramCache]: Analyzing trace with hash -673480641, now seen corresponding path program 8 times [2018-11-28 11:23:50,947 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:23:50,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:23:50,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:50,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:23:50,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:23:51,019 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:51,019 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:23:51,019 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/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 [2018-11-28 11:23:51,033 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 11:23:51,052 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 11:23:51,052 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:23:51,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:23:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:51,086 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:23:51,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-11-28 11:23:51,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 11:23:51,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 11:23:51,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-28 11:23:51,087 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 12 states. [2018-11-28 11:23:51,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:23:51,129 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2018-11-28 11:23:51,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 11:23:51,129 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2018-11-28 11:23:51,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:23:51,130 INFO L225 Difference]: With dead ends: 50 [2018-11-28 11:23:51,130 INFO L226 Difference]: Without dead ends: 50 [2018-11-28 11:23:51,130 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-28 11:23:51,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-28 11:23:51,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2018-11-28 11:23:51,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-28 11:23:51,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2018-11-28 11:23:51,133 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 38 [2018-11-28 11:23:51,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:23:51,133 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2018-11-28 11:23:51,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 11:23:51,134 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2018-11-28 11:23:51,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-28 11:23:51,134 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:23:51,134 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:23:51,134 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-28 11:23:51,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:23:51,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1510442024, now seen corresponding path program 9 times [2018-11-28 11:23:51,135 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:23:51,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:23:51,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:51,136 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:23:51,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:23:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:51,230 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:23:51,230 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/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 [2018-11-28 11:23:51,236 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 11:23:51,286 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-28 11:23:51,286 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:23:51,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:23:51,312 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:51,330 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:23:51,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-11-28 11:23:51,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 11:23:51,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 11:23:51,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-28 11:23:51,331 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 13 states. [2018-11-28 11:23:51,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:23:51,360 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2018-11-28 11:23:51,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 11:23:51,360 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2018-11-28 11:23:51,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:23:51,361 INFO L225 Difference]: With dead ends: 51 [2018-11-28 11:23:51,361 INFO L226 Difference]: Without dead ends: 51 [2018-11-28 11:23:51,361 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-28 11:23:51,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-28 11:23:51,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-11-28 11:23:51,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-28 11:23:51,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-11-28 11:23:51,363 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 41 [2018-11-28 11:23:51,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:23:51,363 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-11-28 11:23:51,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 11:23:51,363 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-11-28 11:23:51,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-28 11:23:51,364 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:23:51,364 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:23:51,364 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-28 11:23:51,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:23:51,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1709012065, now seen corresponding path program 10 times [2018-11-28 11:23:51,364 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:23:51,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:23:51,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:51,365 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:23:51,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:23:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:23:51,414 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 11:23:51,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:23:51 BoogieIcfgContainer [2018-11-28 11:23:51,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 11:23:51,444 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 11:23:51,444 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 11:23:51,444 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 11:23:51,444 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:23:49" (3/4) ... [2018-11-28 11:23:51,448 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 11:23:51,493 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_214cffa2-af37-4f98-96c0-9f05b7c28e0f/bin-2019/uautomizer/witness.graphml [2018-11-28 11:23:51,493 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 11:23:51,494 INFO L168 Benchmark]: Toolchain (without parser) took 2919.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.2 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -191.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:23:51,495 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:23:51,496 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.35 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-28 11:23:51,496 INFO L168 Benchmark]: Boogie Preprocessor took 34.14 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:23:51,496 INFO L168 Benchmark]: RCFGBuilder took 248.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -127.7 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2018-11-28 11:23:51,497 INFO L168 Benchmark]: TraceAbstraction took 2411.60 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 79.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -74.7 MB). Peak memory consumption was 5.0 MB. Max. memory is 11.5 GB. [2018-11-28 11:23:51,497 INFO L168 Benchmark]: Witness Printer took 49.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:23:51,501 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 171.35 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.14 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 248.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -127.7 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2411.60 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 79.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -74.7 MB). Peak memory consumption was 5.0 MB. Max. memory is 11.5 GB. * Witness Printer took 49.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 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: [L19] CALL, EXPR getNumbers() [L8] int *array = alloca(10 * sizeof(int)); [L10] int i = 0; VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=0] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=0] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=0] [L10] ++i VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=1] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=1] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=1] [L10] ++i VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=2] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=2] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=2] [L10] ++i VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=3] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=3] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=3] [L10] ++i VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=4] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=4] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=4] [L10] ++i VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=5] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=5] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=5] [L10] ++i VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=6] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=6] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=6] [L10] ++i VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=7] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=7] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=7] [L10] ++i VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=8] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=8] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=8] [L10] ++i VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=9] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=9] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=9] [L10] ++i VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=10] [L10] COND FALSE !(i < 10) VAL [alloca(10 * sizeof(int))={103:0}, array={103:0}, i=10] [L14] return array; [L19] RET, EXPR getNumbers() VAL [getNumbers()={103:0}] [L19] int *numbers = getNumbers(); [L21] int i = 0; VAL [i=0, numbers={103:0}] [L21] COND TRUE i < 10 [L22] numbers + i - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 5 error locations. UNSAFE Result, 2.3s OverallTime, 13 OverallIterations, 10 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 255 SDtfs, 124 SDslu, 932 SDs, 0 SdLazy, 286 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 334 GetRequests, 264 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 596 NumberOfCodeBlocks, 596 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 531 ConstructedInterpolants, 0 QuantifiedInterpolants, 34673 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1170 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 21 InterpolantComputations, 3 PerfectInterpolantSequences, 2/812 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...