./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength6_true-valid-memsafety_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_9f41b215-a6a2-4e12-bcfd-eda284145881/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9f41b215-a6a2-4e12-bcfd-eda284145881/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9f41b215-a6a2-4e12-bcfd-eda284145881/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9f41b215-a6a2-4e12-bcfd-eda284145881/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength6_true-valid-memsafety_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9f41b215-a6a2-4e12-bcfd-eda284145881/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9f41b215-a6a2-4e12-bcfd-eda284145881/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 07b05923cf5c1b39a35ab81b524575a0a488c268 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 23:24:45,020 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 23:24:45,021 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 23:24:45,027 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 23:24:45,027 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 23:24:45,028 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 23:24:45,029 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 23:24:45,030 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 23:24:45,031 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 23:24:45,032 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 23:24:45,032 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 23:24:45,033 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 23:24:45,033 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 23:24:45,034 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 23:24:45,035 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 23:24:45,035 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 23:24:45,036 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 23:24:45,037 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 23:24:45,039 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 23:24:45,040 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 23:24:45,040 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 23:24:45,041 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 23:24:45,043 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 23:24:45,043 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 23:24:45,043 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 23:24:45,044 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 23:24:45,045 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 23:24:45,046 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 23:24:45,046 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 23:24:45,047 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 23:24:45,047 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 23:24:45,047 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 23:24:45,048 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 23:24:45,048 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 23:24:45,048 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 23:24:45,049 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 23:24:45,049 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9f41b215-a6a2-4e12-bcfd-eda284145881/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-22 23:24:45,059 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 23:24:45,060 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 23:24:45,060 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 23:24:45,060 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 23:24:45,061 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-22 23:24:45,061 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-22 23:24:45,061 INFO L133 SettingsManager]: * Use SBE=true [2018-11-22 23:24:45,061 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 23:24:45,062 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 23:24:45,062 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-22 23:24:45,062 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 23:24:45,062 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 23:24:45,062 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 23:24:45,062 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-22 23:24:45,063 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-22 23:24:45,063 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-22 23:24:45,063 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 23:24:45,063 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 23:24:45,063 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 23:24:45,063 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 23:24:45,063 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 23:24:45,064 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 23:24:45,064 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 23:24:45,064 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 23:24:45,064 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 23:24:45,064 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 23:24:45,064 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-22 23:24:45,065 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 23:24:45,065 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_9f41b215-a6a2-4e12-bcfd-eda284145881/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 -> 07b05923cf5c1b39a35ab81b524575a0a488c268 [2018-11-22 23:24:45,089 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 23:24:45,098 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 23:24:45,100 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 23:24:45,101 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 23:24:45,102 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 23:24:45,102 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9f41b215-a6a2-4e12-bcfd-eda284145881/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength6_true-valid-memsafety_true-termination.c [2018-11-22 23:24:45,146 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9f41b215-a6a2-4e12-bcfd-eda284145881/bin-2019/uautomizer/data/ac6b4ce74/f2d056784ad142f99539505960be7541/FLAGac24527ee [2018-11-22 23:24:45,553 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 23:24:45,553 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9f41b215-a6a2-4e12-bcfd-eda284145881/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength6_true-valid-memsafety_true-termination.c [2018-11-22 23:24:45,557 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9f41b215-a6a2-4e12-bcfd-eda284145881/bin-2019/uautomizer/data/ac6b4ce74/f2d056784ad142f99539505960be7541/FLAGac24527ee [2018-11-22 23:24:45,570 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9f41b215-a6a2-4e12-bcfd-eda284145881/bin-2019/uautomizer/data/ac6b4ce74/f2d056784ad142f99539505960be7541 [2018-11-22 23:24:45,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 23:24:45,574 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-22 23:24:45,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 23:24:45,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 23:24:45,578 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 23:24:45,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:24:45" (1/1) ... [2018-11-22 23:24:45,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66955ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:45, skipping insertion in model container [2018-11-22 23:24:45,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:24:45" (1/1) ... [2018-11-22 23:24:45,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 23:24:45,598 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 23:24:45,702 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:24:45,708 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 23:24:45,719 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:24:45,728 INFO L195 MainTranslator]: Completed translation [2018-11-22 23:24:45,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:45 WrapperNode [2018-11-22 23:24:45,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 23:24:45,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 23:24:45,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 23:24:45,729 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 23:24:45,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:45" (1/1) ... [2018-11-22 23:24:45,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:45" (1/1) ... [2018-11-22 23:24:45,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:45" (1/1) ... [2018-11-22 23:24:45,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:45" (1/1) ... [2018-11-22 23:24:45,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:45" (1/1) ... [2018-11-22 23:24:45,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:45" (1/1) ... [2018-11-22 23:24:45,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:45" (1/1) ... [2018-11-22 23:24:45,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 23:24:45,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 23:24:45,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 23:24:45,788 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 23:24:45,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f41b215-a6a2-4e12-bcfd-eda284145881/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 [2018-11-22 23:24:45,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 23:24:45,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 23:24:45,821 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-11-22 23:24:45,821 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 23:24:45,821 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-11-22 23:24:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-22 23:24:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 23:24:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-22 23:24:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-22 23:24:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-22 23:24:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 23:24:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 23:24:46,004 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 23:24:46,005 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-11-22 23:24:46,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:24:46 BoogieIcfgContainer [2018-11-22 23:24:46,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 23:24:46,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 23:24:46,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 23:24:46,008 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 23:24:46,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:24:45" (1/3) ... [2018-11-22 23:24:46,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a26afab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:24:46, skipping insertion in model container [2018-11-22 23:24:46,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:45" (2/3) ... [2018-11-22 23:24:46,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a26afab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:24:46, skipping insertion in model container [2018-11-22 23:24:46,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:24:46" (3/3) ... [2018-11-22 23:24:46,011 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength6_true-valid-memsafety_true-termination.c [2018-11-22 23:24:46,019 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 23:24:46,023 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2018-11-22 23:24:46,035 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2018-11-22 23:24:46,057 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-22 23:24:46,058 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 23:24:46,058 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-22 23:24:46,058 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 23:24:46,058 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 23:24:46,058 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 23:24:46,058 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 23:24:46,058 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 23:24:46,058 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 23:24:46,069 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-11-22 23:24:46,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-22 23:24:46,077 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:24:46,078 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:24:46,079 INFO L423 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-22 23:24:46,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:24:46,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2018-11-22 23:24:46,085 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:24:46,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:24:46,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:46,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:24:46,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:24:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:24:46,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:24:46,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 23:24:46,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 23:24:46,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 23:24:46,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:24:46,208 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2018-11-22 23:24:46,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:24:46,259 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2018-11-22 23:24:46,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 23:24:46,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-22 23:24:46,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:24:46,268 INFO L225 Difference]: With dead ends: 58 [2018-11-22 23:24:46,269 INFO L226 Difference]: Without dead ends: 54 [2018-11-22 23:24:46,270 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:24:46,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-22 23:24:46,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2018-11-22 23:24:46,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-22 23:24:46,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-11-22 23:24:46,299 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2018-11-22 23:24:46,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:24:46,299 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-11-22 23:24:46,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 23:24:46,299 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-11-22 23:24:46,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-22 23:24:46,299 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:24:46,300 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:24:46,300 INFO L423 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-22 23:24:46,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:24:46,300 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2018-11-22 23:24:46,300 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:24:46,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:24:46,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:46,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:24:46,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:24:46,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:24:46,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:24:46,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-22 23:24:46,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 23:24:46,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 23:24:46,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:24:46,340 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 3 states. [2018-11-22 23:24:46,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:24:46,367 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-11-22 23:24:46,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 23:24:46,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-22 23:24:46,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:24:46,370 INFO L225 Difference]: With dead ends: 49 [2018-11-22 23:24:46,370 INFO L226 Difference]: Without dead ends: 49 [2018-11-22 23:24:46,370 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 [2018-11-22 23:24:46,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-22 23:24:46,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 41. [2018-11-22 23:24:46,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-22 23:24:46,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-11-22 23:24:46,375 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 11 [2018-11-22 23:24:46,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:24:46,375 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-11-22 23:24:46,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 23:24:46,375 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-11-22 23:24:46,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-22 23:24:46,376 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:24:46,376 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:24:46,376 INFO L423 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-22 23:24:46,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:24:46,376 INFO L82 PathProgramCache]: Analyzing trace with hash 863296133, now seen corresponding path program 1 times [2018-11-22 23:24:46,376 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:24:46,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:24:46,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:46,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:24:46,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:24:46,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:24:46,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:24:46,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-22 23:24:46,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-22 23:24:46,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-22 23:24:46,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-22 23:24:46,453 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2018-11-22 23:24:46,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:24:46,533 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2018-11-22 23:24:46,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-22 23:24:46,533 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-11-22 23:24:46,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:24:46,534 INFO L225 Difference]: With dead ends: 40 [2018-11-22 23:24:46,534 INFO L226 Difference]: Without dead ends: 40 [2018-11-22 23:24:46,535 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-22 23:24:46,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-22 23:24:46,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-22 23:24:46,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-22 23:24:46,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2018-11-22 23:24:46,541 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 12 [2018-11-22 23:24:46,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:24:46,541 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2018-11-22 23:24:46,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-22 23:24:46,541 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2018-11-22 23:24:46,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-22 23:24:46,541 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:24:46,541 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:24:46,542 INFO L423 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-22 23:24:46,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:24:46,542 INFO L82 PathProgramCache]: Analyzing trace with hash 863296134, now seen corresponding path program 1 times [2018-11-22 23:24:46,542 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:24:46,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:24:46,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:46,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:24:46,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:24:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:24:46,650 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:24:46,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-22 23:24:46,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-22 23:24:46,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-22 23:24:46,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-22 23:24:46,651 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 7 states. [2018-11-22 23:24:46,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:24:46,771 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2018-11-22 23:24:46,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-22 23:24:46,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-11-22 23:24:46,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:24:46,772 INFO L225 Difference]: With dead ends: 42 [2018-11-22 23:24:46,772 INFO L226 Difference]: Without dead ends: 42 [2018-11-22 23:24:46,772 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-11-22 23:24:46,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-22 23:24:46,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2018-11-22 23:24:46,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-22 23:24:46,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2018-11-22 23:24:46,776 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 12 [2018-11-22 23:24:46,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:24:46,776 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2018-11-22 23:24:46,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-22 23:24:46,777 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2018-11-22 23:24:46,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-22 23:24:46,777 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:24:46,777 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:24:46,778 INFO L423 AbstractCegarLoop]: === Iteration 5 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-22 23:24:46,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:24:46,778 INFO L82 PathProgramCache]: Analyzing trace with hash 143250926, now seen corresponding path program 1 times [2018-11-22 23:24:46,778 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:24:46,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:24:46,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:46,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:24:46,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:24:46,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:24:46,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:24:46,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-22 23:24:46,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-22 23:24:46,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-22 23:24:46,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-22 23:24:46,821 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2018-11-22 23:24:46,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:24:46,863 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2018-11-22 23:24:46,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-22 23:24:46,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-11-22 23:24:46,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:24:46,865 INFO L225 Difference]: With dead ends: 45 [2018-11-22 23:24:46,865 INFO L226 Difference]: Without dead ends: 42 [2018-11-22 23:24:46,865 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-22 23:24:46,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-22 23:24:46,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2018-11-22 23:24:46,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-22 23:24:46,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-11-22 23:24:46,868 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 15 [2018-11-22 23:24:46,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:24:46,868 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-11-22 23:24:46,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-22 23:24:46,868 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-11-22 23:24:46,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-22 23:24:46,869 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:24:46,869 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:24:46,869 INFO L423 AbstractCegarLoop]: === Iteration 6 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-22 23:24:46,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:24:46,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1623425863, now seen corresponding path program 1 times [2018-11-22 23:24:46,872 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:24:46,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:24:46,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:46,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:24:46,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:24:46,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:24:46,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:24:46,925 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f41b215-a6a2-4e12-bcfd-eda284145881/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 [2018-11-22 23:24:46,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:24:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:24:46,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:24:46,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:24:47,005 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 23:24:47,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-11-22 23:24:47,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-22 23:24:47,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-22 23:24:47,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-22 23:24:47,006 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 9 states. [2018-11-22 23:24:47,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:24:47,087 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-11-22 23:24:47,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-22 23:24:47,088 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-11-22 23:24:47,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:24:47,089 INFO L225 Difference]: With dead ends: 47 [2018-11-22 23:24:47,089 INFO L226 Difference]: Without dead ends: 47 [2018-11-22 23:24:47,089 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-11-22 23:24:47,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-22 23:24:47,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-11-22 23:24:47,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-22 23:24:47,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2018-11-22 23:24:47,093 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 16 [2018-11-22 23:24:47,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:24:47,093 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2018-11-22 23:24:47,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-22 23:24:47,093 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2018-11-22 23:24:47,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-22 23:24:47,094 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:24:47,094 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:24:47,095 INFO L423 AbstractCegarLoop]: === Iteration 7 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-22 23:24:47,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:24:47,095 INFO L82 PathProgramCache]: Analyzing trace with hash -661735507, now seen corresponding path program 1 times [2018-11-22 23:24:47,095 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:24:47,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:24:47,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:47,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:24:47,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:24:47,213 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:24:47,214 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:24:47,214 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f41b215-a6a2-4e12-bcfd-eda284145881/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 [2018-11-22 23:24:47,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:24:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:24:47,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:24:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:24:47,321 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 23:24:47,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-11-22 23:24:47,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-22 23:24:47,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-22 23:24:47,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-11-22 23:24:47,322 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 12 states. [2018-11-22 23:24:47,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:24:47,448 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2018-11-22 23:24:47,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-22 23:24:47,450 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2018-11-22 23:24:47,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:24:47,451 INFO L225 Difference]: With dead ends: 59 [2018-11-22 23:24:47,451 INFO L226 Difference]: Without dead ends: 56 [2018-11-22 23:24:47,451 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2018-11-22 23:24:47,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-22 23:24:47,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2018-11-22 23:24:47,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-22 23:24:47,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2018-11-22 23:24:47,456 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 30 [2018-11-22 23:24:47,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:24:47,456 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2018-11-22 23:24:47,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-22 23:24:47,457 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2018-11-22 23:24:47,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-22 23:24:47,457 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:24:47,457 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:24:47,457 INFO L423 AbstractCegarLoop]: === Iteration 8 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-22 23:24:47,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:24:47,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1228723374, now seen corresponding path program 2 times [2018-11-22 23:24:47,458 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:24:47,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:24:47,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:47,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:24:47,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:24:47,599 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:24:47,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:24:47,599 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f41b215-a6a2-4e12-bcfd-eda284145881/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 [2018-11-22 23:24:47,605 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-22 23:24:47,613 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-22 23:24:47,613 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 23:24:47,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:24:47,634 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:24:47,637 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 27 [2018-11-22 23:24:47,640 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-11-22 23:24:47,641 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:24:47,644 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:24:47,647 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:24:47,648 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:18, output treesize:15 [2018-11-22 23:24:47,715 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-11-22 23:24:47,740 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-22 23:24:47,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-11-22 23:24:47,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-22 23:24:47,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-22 23:24:47,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-11-22 23:24:47,742 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 10 states. [2018-11-22 23:24:47,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:24:47,909 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2018-11-22 23:24:47,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-22 23:24:47,910 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-11-22 23:24:47,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:24:47,911 INFO L225 Difference]: With dead ends: 62 [2018-11-22 23:24:47,911 INFO L226 Difference]: Without dead ends: 59 [2018-11-22 23:24:47,911 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2018-11-22 23:24:47,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-11-22 23:24:47,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2018-11-22 23:24:47,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-22 23:24:47,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2018-11-22 23:24:47,914 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 35 [2018-11-22 23:24:47,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:24:47,915 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2018-11-22 23:24:47,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-22 23:24:47,915 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2018-11-22 23:24:47,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-22 23:24:47,915 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:24:47,916 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:24:47,917 INFO L423 AbstractCegarLoop]: === Iteration 9 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-22 23:24:47,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:24:47,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1819430834, now seen corresponding path program 1 times [2018-11-22 23:24:47,917 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:24:47,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:24:47,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:47,918 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 23:24:47,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:24:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:24:48,091 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:24:48,091 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f41b215-a6a2-4e12-bcfd-eda284145881/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 [2018-11-22 23:24:48,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:24:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:24:48,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:24:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:24:48,231 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 23:24:48,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-11-22 23:24:48,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-22 23:24:48,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-22 23:24:48,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-11-22 23:24:48,232 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 16 states. [2018-11-22 23:24:48,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:24:48,392 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2018-11-22 23:24:48,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-22 23:24:48,393 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 40 [2018-11-22 23:24:48,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:24:48,393 INFO L225 Difference]: With dead ends: 67 [2018-11-22 23:24:48,393 INFO L226 Difference]: Without dead ends: 64 [2018-11-22 23:24:48,394 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2018-11-22 23:24:48,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-22 23:24:48,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-11-22 23:24:48,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-22 23:24:48,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2018-11-22 23:24:48,397 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 40 [2018-11-22 23:24:48,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:24:48,402 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2018-11-22 23:24:48,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-22 23:24:48,402 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2018-11-22 23:24:48,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-22 23:24:48,403 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:24:48,403 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:24:48,403 INFO L423 AbstractCegarLoop]: === Iteration 10 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-22 23:24:48,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:24:48,403 INFO L82 PathProgramCache]: Analyzing trace with hash -2080753, now seen corresponding path program 2 times [2018-11-22 23:24:48,403 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:24:48,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:24:48,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:48,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:24:48,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:24:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:24:48,583 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:24:48,583 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f41b215-a6a2-4e12-bcfd-eda284145881/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 [2018-11-22 23:24:48,588 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-22 23:24:48,596 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-22 23:24:48,596 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 23:24:48,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:24:48,606 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2018-11-22 23:24:48,606 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 23:24:48,617 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-11-22 23:24:48,621 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:24:48,622 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 21 [2018-11-22 23:24:48,622 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-22 23:24:48,626 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:24:48,631 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:24:48,631 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2018-11-22 23:24:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-11-22 23:24:48,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-22 23:24:48,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2018-11-22 23:24:48,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-22 23:24:48,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-22 23:24:48,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-11-22 23:24:48,732 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 13 states. [2018-11-22 23:24:48,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:24:48,952 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2018-11-22 23:24:48,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-22 23:24:48,953 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2018-11-22 23:24:48,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:24:48,953 INFO L225 Difference]: With dead ends: 70 [2018-11-22 23:24:48,953 INFO L226 Difference]: Without dead ends: 67 [2018-11-22 23:24:48,954 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2018-11-22 23:24:48,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-11-22 23:24:48,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2018-11-22 23:24:48,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-22 23:24:48,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2018-11-22 23:24:48,957 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 45 [2018-11-22 23:24:48,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:24:48,957 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2018-11-22 23:24:48,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-22 23:24:48,958 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2018-11-22 23:24:48,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-11-22 23:24:48,958 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:24:48,959 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:24:48,959 INFO L423 AbstractCegarLoop]: === Iteration 11 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-22 23:24:48,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:24:48,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1165684695, now seen corresponding path program 1 times [2018-11-22 23:24:48,959 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:24:48,959 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:24:48,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:48,960 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 23:24:48,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:24:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-11-22 23:24:49,001 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:24:49,001 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f41b215-a6a2-4e12-bcfd-eda284145881/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 [2018-11-22 23:24:49,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:24:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:24:49,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:24:49,111 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 1 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:24:49,125 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 23:24:49,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 11] total 13 [2018-11-22 23:24:49,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-22 23:24:49,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-22 23:24:49,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2018-11-22 23:24:49,126 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand 13 states. [2018-11-22 23:24:49,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:24:49,208 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2018-11-22 23:24:49,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-22 23:24:49,209 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2018-11-22 23:24:49,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:24:49,210 INFO L225 Difference]: With dead ends: 99 [2018-11-22 23:24:49,210 INFO L226 Difference]: Without dead ends: 96 [2018-11-22 23:24:49,210 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-11-22 23:24:49,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-11-22 23:24:49,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 78. [2018-11-22 23:24:49,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-11-22 23:24:49,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2018-11-22 23:24:49,214 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 59 [2018-11-22 23:24:49,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:24:49,214 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2018-11-22 23:24:49,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-22 23:24:49,214 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2018-11-22 23:24:49,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-11-22 23:24:49,216 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:24:49,216 INFO L402 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:24:49,216 INFO L423 AbstractCegarLoop]: === Iteration 12 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-22 23:24:49,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:24:49,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1970017626, now seen corresponding path program 2 times [2018-11-22 23:24:49,217 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:24:49,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:24:49,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:49,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:24:49,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:24:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2018-11-22 23:24:49,267 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:24:49,267 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f41b215-a6a2-4e12-bcfd-eda284145881/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 [2018-11-22 23:24:49,274 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-22 23:24:49,286 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-22 23:24:49,286 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 23:24:49,290 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:24:49,326 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:24:49,327 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-11-22 23:24:49,330 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-11-22 23:24:49,331 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:24:49,336 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:24:49,341 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-22 23:24:49,341 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-11-22 23:24:49,399 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:24:49,400 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-11-22 23:24:49,403 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-11-22 23:24:49,403 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:24:49,408 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:24:49,425 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-22 23:24:49,425 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-11-22 23:24:50,086 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2018-11-22 23:24:50,100 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-22 23:24:50,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2018-11-22 23:24:50,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-22 23:24:50,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-22 23:24:50,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=51, Unknown=1, NotChecked=0, Total=72 [2018-11-22 23:24:50,101 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 9 states. [2018-11-22 23:24:50,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:24:50,228 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2018-11-22 23:24:50,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-22 23:24:50,229 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 115 [2018-11-22 23:24:50,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:24:50,229 INFO L225 Difference]: With dead ends: 101 [2018-11-22 23:24:50,229 INFO L226 Difference]: Without dead ends: 0 [2018-11-22 23:24:50,230 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 110 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=173, Unknown=1, NotChecked=0, Total=240 [2018-11-22 23:24:50,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-22 23:24:50,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-22 23:24:50,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-22 23:24:50,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-22 23:24:50,230 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 115 [2018-11-22 23:24:50,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:24:50,230 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 23:24:50,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-22 23:24:50,231 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-22 23:24:50,231 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-22 23:24:50,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 11:24:50 BoogieIcfgContainer [2018-11-22 23:24:50,235 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 23:24:50,236 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 23:24:50,236 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 23:24:50,236 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 23:24:50,236 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:24:46" (3/4) ... [2018-11-22 23:24:50,239 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-22 23:24:50,243 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-22 23:24:50,244 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2018-11-22 23:24:50,244 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-22 23:24:50,247 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-11-22 23:24:50,247 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-22 23:24:50,247 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-22 23:24:50,247 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-22 23:24:50,278 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_9f41b215-a6a2-4e12-bcfd-eda284145881/bin-2019/uautomizer/witness.graphml [2018-11-22 23:24:50,278 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 23:24:50,278 INFO L168 Benchmark]: Toolchain (without parser) took 4705.29 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 305.1 MB). Free memory was 958.0 MB in the beginning and 1.2 GB in the end (delta: -285.0 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2018-11-22 23:24:50,280 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 23:24:50,280 INFO L168 Benchmark]: CACSL2BoogieTranslator took 153.78 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 947.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-22 23:24:50,280 INFO L168 Benchmark]: Boogie Preprocessor took 58.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 947.1 MB in the beginning and 1.2 GB in the end (delta: -210.0 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2018-11-22 23:24:50,281 INFO L168 Benchmark]: RCFGBuilder took 217.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-11-22 23:24:50,281 INFO L168 Benchmark]: TraceAbstraction took 4229.64 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 149.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -110.6 MB). Peak memory consumption was 38.8 MB. Max. memory is 11.5 GB. [2018-11-22 23:24:50,281 INFO L168 Benchmark]: Witness Printer took 42.25 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 23:24:50,283 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 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 153.78 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 947.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 58.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 947.1 MB in the beginning and 1.2 GB in the end (delta: -210.0 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 217.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4229.64 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 149.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -110.6 MB). Peak memory consumption was 38.8 MB. Max. memory is 11.5 GB. * Witness Printer took 42.25 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 8 error locations. SAFE Result, 4.1s OverallTime, 12 OverallIterations, 16 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 313 SDtfs, 510 SDslu, 1251 SDs, 0 SdLazy, 926 SolverSat, 93 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 448 GetRequests, 317 SyntacticMatches, 5 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=11, 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, 63 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 740 NumberOfCodeBlocks, 588 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 721 ConstructedInterpolants, 159 QuantifiedInterpolants, 362989 SizeOfPredicates, 8 NumberOfNonLiveVariables, 689 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 19 InterpolantComputations, 8 PerfectInterpolantSequences, 1511/1896 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...