./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_true-valid-memsafety.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_80050536-03ad-4774-a9d8-95dbf43e3f21/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_80050536-03ad-4774-a9d8-95dbf43e3f21/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_80050536-03ad-4774-a9d8-95dbf43e3f21/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_80050536-03ad-4774-a9d8-95dbf43e3f21/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_80050536-03ad-4774-a9d8-95dbf43e3f21/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_80050536-03ad-4774-a9d8-95dbf43e3f21/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 a4e278d158dd9e8a83bb0a2afcbaa26c6819a0f8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 13:57:19,020 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 13:57:19,021 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 13:57:19,028 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 13:57:19,028 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 13:57:19,029 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 13:57:19,029 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 13:57:19,031 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 13:57:19,032 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 13:57:19,032 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 13:57:19,033 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 13:57:19,033 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 13:57:19,034 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 13:57:19,034 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 13:57:19,036 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 13:57:19,036 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 13:57:19,037 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 13:57:19,038 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 13:57:19,039 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 13:57:19,040 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 13:57:19,041 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 13:57:19,042 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 13:57:19,043 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 13:57:19,043 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 13:57:19,044 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 13:57:19,044 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 13:57:19,045 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 13:57:19,046 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 13:57:19,046 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 13:57:19,047 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 13:57:19,047 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 13:57:19,047 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 13:57:19,048 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 13:57:19,048 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 13:57:19,048 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 13:57:19,049 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 13:57:19,049 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_80050536-03ad-4774-a9d8-95dbf43e3f21/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-23 13:57:19,057 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 13:57:19,058 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 13:57:19,058 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 13:57:19,058 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 13:57:19,059 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 13:57:19,059 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 13:57:19,059 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 13:57:19,059 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 13:57:19,059 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 13:57:19,059 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 13:57:19,060 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 13:57:19,060 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 13:57:19,060 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 13:57:19,060 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-23 13:57:19,060 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-23 13:57:19,060 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-23 13:57:19,060 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 13:57:19,060 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 13:57:19,060 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 13:57:19,061 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 13:57:19,061 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 13:57:19,061 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 13:57:19,061 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 13:57:19,061 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 13:57:19,061 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 13:57:19,062 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 13:57:19,062 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 13:57:19,062 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 13:57:19,062 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_80050536-03ad-4774-a9d8-95dbf43e3f21/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 -> a4e278d158dd9e8a83bb0a2afcbaa26c6819a0f8 [2018-11-23 13:57:19,084 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 13:57:19,091 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 13:57:19,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 13:57:19,094 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 13:57:19,094 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 13:57:19,095 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_80050536-03ad-4774-a9d8-95dbf43e3f21/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_true-valid-memsafety.c [2018-11-23 13:57:19,128 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_80050536-03ad-4774-a9d8-95dbf43e3f21/bin-2019/uautomizer/data/4e80a89d6/a7041f285fb84d0cbb109225803ec7f6/FLAGfed0711f1 [2018-11-23 13:57:19,540 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 13:57:19,541 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_80050536-03ad-4774-a9d8-95dbf43e3f21/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_true-valid-memsafety.c [2018-11-23 13:57:19,546 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_80050536-03ad-4774-a9d8-95dbf43e3f21/bin-2019/uautomizer/data/4e80a89d6/a7041f285fb84d0cbb109225803ec7f6/FLAGfed0711f1 [2018-11-23 13:57:19,558 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_80050536-03ad-4774-a9d8-95dbf43e3f21/bin-2019/uautomizer/data/4e80a89d6/a7041f285fb84d0cbb109225803ec7f6 [2018-11-23 13:57:19,560 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 13:57:19,562 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-23 13:57:19,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 13:57:19,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 13:57:19,565 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 13:57:19,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:57:19" (1/1) ... [2018-11-23 13:57:19,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd9ff0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:19, skipping insertion in model container [2018-11-23 13:57:19,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:57:19" (1/1) ... [2018-11-23 13:57:19,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 13:57:19,591 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 13:57:19,712 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:57:19,718 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 13:57:19,729 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:57:19,738 INFO L195 MainTranslator]: Completed translation [2018-11-23 13:57:19,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:19 WrapperNode [2018-11-23 13:57:19,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 13:57:19,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 13:57:19,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 13:57:19,739 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 13:57:19,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:19" (1/1) ... [2018-11-23 13:57:19,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:19" (1/1) ... [2018-11-23 13:57:19,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:19" (1/1) ... [2018-11-23 13:57:19,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:19" (1/1) ... [2018-11-23 13:57:19,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:19" (1/1) ... [2018-11-23 13:57:19,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:19" (1/1) ... [2018-11-23 13:57:19,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:19" (1/1) ... [2018-11-23 13:57:19,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 13:57:19,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 13:57:19,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 13:57:19,806 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 13:57:19,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80050536-03ad-4774-a9d8-95dbf43e3f21/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 [2018-11-23 13:57:19,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 13:57:19,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 13:57:19,847 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-11-23 13:57:19,848 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 13:57:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-11-23 13:57:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 13:57:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 13:57:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 13:57:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 13:57:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 13:57:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 13:57:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 13:57:20,012 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 13:57:20,012 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-11-23 13:57:20,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:57:20 BoogieIcfgContainer [2018-11-23 13:57:20,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 13:57:20,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 13:57:20,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 13:57:20,016 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 13:57:20,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:57:19" (1/3) ... [2018-11-23 13:57:20,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3386ccf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:57:20, skipping insertion in model container [2018-11-23 13:57:20,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:19" (2/3) ... [2018-11-23 13:57:20,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3386ccf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:57:20, skipping insertion in model container [2018-11-23 13:57:20,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:57:20" (3/3) ... [2018-11-23 13:57:20,019 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_true-valid-memsafety.c [2018-11-23 13:57:20,027 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 13:57:20,033 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2018-11-23 13:57:20,047 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2018-11-23 13:57:20,067 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 13:57:20,068 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 13:57:20,068 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-23 13:57:20,068 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 13:57:20,068 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 13:57:20,068 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 13:57:20,068 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 13:57:20,069 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 13:57:20,069 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 13:57:20,083 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-11-23 13:57:20,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 13:57:20,091 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:57:20,092 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:57:20,094 INFO L423 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2018-11-23 13:57:20,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:57:20,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2018-11-23 13:57:20,100 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:57:20,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:57:20,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:20,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:57:20,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:57:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:57:20,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:57:20,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 13:57:20,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 13:57:20,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 13:57:20,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 13:57:20,206 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2018-11-23 13:57:20,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:57:20,260 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2018-11-23 13:57:20,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 13:57:20,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-23 13:57:20,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:57:20,270 INFO L225 Difference]: With dead ends: 58 [2018-11-23 13:57:20,270 INFO L226 Difference]: Without dead ends: 54 [2018-11-23 13:57:20,272 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 [2018-11-23 13:57:20,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-23 13:57:20,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2018-11-23 13:57:20,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-23 13:57:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-11-23 13:57:20,300 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2018-11-23 13:57:20,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:57:20,300 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-11-23 13:57:20,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 13:57:20,301 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-11-23 13:57:20,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-23 13:57:20,301 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:57:20,301 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:57:20,301 INFO L423 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2018-11-23 13:57:20,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:57:20,302 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2018-11-23 13:57:20,302 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:57:20,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:57:20,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:20,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:57:20,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:57:20,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:57:20,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:57:20,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 13:57:20,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 13:57:20,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 13:57:20,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:57:20,354 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 5 states. [2018-11-23 13:57:20,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:57:20,469 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2018-11-23 13:57:20,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 13:57:20,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-23 13:57:20,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:57:20,470 INFO L225 Difference]: With dead ends: 59 [2018-11-23 13:57:20,470 INFO L226 Difference]: Without dead ends: 59 [2018-11-23 13:57:20,471 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 13:57:20,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-11-23 13:57:20,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 45. [2018-11-23 13:57:20,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-23 13:57:20,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2018-11-23 13:57:20,476 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 11 [2018-11-23 13:57:20,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:57:20,476 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2018-11-23 13:57:20,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 13:57:20,476 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2018-11-23 13:57:20,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-23 13:57:20,477 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:57:20,477 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:57:20,477 INFO L423 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2018-11-23 13:57:20,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:57:20,477 INFO L82 PathProgramCache]: Analyzing trace with hash 143250926, now seen corresponding path program 1 times [2018-11-23 13:57:20,477 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:57:20,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:57:20,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:20,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:57:20,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:57:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:57:20,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:57:20,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 13:57:20,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 13:57:20,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 13:57:20,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 13:57:20,509 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 3 states. [2018-11-23 13:57:20,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:57:20,525 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2018-11-23 13:57:20,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 13:57:20,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-11-23 13:57:20,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:57:20,528 INFO L225 Difference]: With dead ends: 43 [2018-11-23 13:57:20,528 INFO L226 Difference]: Without dead ends: 43 [2018-11-23 13:57:20,528 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 [2018-11-23 13:57:20,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-23 13:57:20,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-23 13:57:20,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-23 13:57:20,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2018-11-23 13:57:20,531 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 15 [2018-11-23 13:57:20,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:57:20,532 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2018-11-23 13:57:20,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 13:57:20,532 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2018-11-23 13:57:20,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-23 13:57:20,532 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:57:20,532 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:57:20,532 INFO L423 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2018-11-23 13:57:20,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:57:20,532 INFO L82 PathProgramCache]: Analyzing trace with hash 143250927, now seen corresponding path program 1 times [2018-11-23 13:57:20,533 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:57:20,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:57:20,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:20,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:57:20,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:57:20,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:57:20,582 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:57:20,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 13:57:20,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 13:57:20,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 13:57:20,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 13:57:20,583 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 3 states. [2018-11-23 13:57:20,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:57:20,602 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-11-23 13:57:20,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 13:57:20,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-11-23 13:57:20,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:57:20,603 INFO L225 Difference]: With dead ends: 47 [2018-11-23 13:57:20,604 INFO L226 Difference]: Without dead ends: 47 [2018-11-23 13:57:20,604 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 [2018-11-23 13:57:20,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-23 13:57:20,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2018-11-23 13:57:20,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-23 13:57:20,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2018-11-23 13:57:20,606 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 15 [2018-11-23 13:57:20,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:57:20,607 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2018-11-23 13:57:20,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 13:57:20,607 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2018-11-23 13:57:20,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-23 13:57:20,607 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:57:20,607 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:57:20,608 INFO L423 AbstractCegarLoop]: === Iteration 5 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2018-11-23 13:57:20,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:57:20,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1902162976, now seen corresponding path program 1 times [2018-11-23 13:57:20,608 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:57:20,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:57:20,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:20,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:57:20,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:57:20,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:57:20,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:57:20,646 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80050536-03ad-4774-a9d8-95dbf43e3f21/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 [2018-11-23 13:57:20,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:57:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:57:20,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:57:20,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:57:20,718 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 13:57:20,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-11-23 13:57:20,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 13:57:20,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 13:57:20,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:57:20,719 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 5 states. [2018-11-23 13:57:20,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:57:20,769 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2018-11-23 13:57:20,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 13:57:20,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-11-23 13:57:20,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:57:20,770 INFO L225 Difference]: With dead ends: 69 [2018-11-23 13:57:20,770 INFO L226 Difference]: Without dead ends: 69 [2018-11-23 13:57:20,771 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:57:20,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-11-23 13:57:20,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2018-11-23 13:57:20,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-23 13:57:20,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-11-23 13:57:20,775 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 21 [2018-11-23 13:57:20,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:57:20,775 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-11-23 13:57:20,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 13:57:20,775 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-11-23 13:57:20,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-23 13:57:20,776 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:57:20,776 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:57:20,776 INFO L423 AbstractCegarLoop]: === Iteration 6 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2018-11-23 13:57:20,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:57:20,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1165178250, now seen corresponding path program 1 times [2018-11-23 13:57:20,777 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:57:20,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:57:20,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:20,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:57:20,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:57:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 13:57:20,830 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:57:20,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 13:57:20,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 13:57:20,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 13:57:20,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:57:20,831 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 5 states. [2018-11-23 13:57:20,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:57:20,879 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2018-11-23 13:57:20,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 13:57:20,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-23 13:57:20,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:57:20,880 INFO L225 Difference]: With dead ends: 62 [2018-11-23 13:57:20,880 INFO L226 Difference]: Without dead ends: 62 [2018-11-23 13:57:20,881 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-23 13:57:20,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-11-23 13:57:20,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2018-11-23 13:57:20,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-23 13:57:20,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2018-11-23 13:57:20,887 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 22 [2018-11-23 13:57:20,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:57:20,888 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2018-11-23 13:57:20,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 13:57:20,888 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2018-11-23 13:57:20,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-23 13:57:20,889 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:57:20,890 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:57:20,890 INFO L423 AbstractCegarLoop]: === Iteration 7 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2018-11-23 13:57:20,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:57:20,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1760787427, now seen corresponding path program 1 times [2018-11-23 13:57:20,890 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:57:20,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:57:20,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:20,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:57:20,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:57:20,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:57:20,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:57:20,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 13:57:20,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 13:57:20,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 13:57:20,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:57:20,934 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 5 states. [2018-11-23 13:57:20,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:57:20,975 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2018-11-23 13:57:20,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 13:57:20,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-11-23 13:57:20,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:57:20,976 INFO L225 Difference]: With dead ends: 53 [2018-11-23 13:57:20,976 INFO L226 Difference]: Without dead ends: 53 [2018-11-23 13:57:20,977 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 13:57:20,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-23 13:57:20,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-11-23 13:57:20,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-23 13:57:20,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2018-11-23 13:57:20,980 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 23 [2018-11-23 13:57:20,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:57:20,981 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2018-11-23 13:57:20,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 13:57:20,981 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2018-11-23 13:57:20,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-23 13:57:20,981 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:57:20,981 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:57:20,982 INFO L423 AbstractCegarLoop]: === Iteration 8 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2018-11-23 13:57:20,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:57:20,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1760787428, now seen corresponding path program 1 times [2018-11-23 13:57:20,982 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:57:20,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:57:20,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:20,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:57:20,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:57:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:57:21,102 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:57:21,103 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80050536-03ad-4774-a9d8-95dbf43e3f21/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 [2018-11-23 13:57:21,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:57:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:57:21,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:57:21,148 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-23 13:57:21,149 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 13:57:21,157 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:57:21,157 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-23 13:57:21,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 13:57:21,227 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 13:57:21,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2018-11-23 13:57:21,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 13:57:21,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 13:57:21,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-11-23 13:57:21,228 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 11 states. [2018-11-23 13:57:21,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:57:21,378 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2018-11-23 13:57:21,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 13:57:21,379 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2018-11-23 13:57:21,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:57:21,380 INFO L225 Difference]: With dead ends: 64 [2018-11-23 13:57:21,380 INFO L226 Difference]: Without dead ends: 64 [2018-11-23 13:57:21,380 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-11-23 13:57:21,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-23 13:57:21,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2018-11-23 13:57:21,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-23 13:57:21,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2018-11-23 13:57:21,384 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 23 [2018-11-23 13:57:21,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:57:21,385 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2018-11-23 13:57:21,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 13:57:21,385 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2018-11-23 13:57:21,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-23 13:57:21,385 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:57:21,385 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:57:21,386 INFO L423 AbstractCegarLoop]: === Iteration 9 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2018-11-23 13:57:21,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:57:21,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1134972881, now seen corresponding path program 1 times [2018-11-23 13:57:21,386 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:57:21,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:57:21,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:21,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:57:21,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:57:21,469 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-23 13:57:21,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:57:21,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 13:57:21,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 13:57:21,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 13:57:21,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 13:57:21,470 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 6 states. [2018-11-23 13:57:21,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:57:21,514 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2018-11-23 13:57:21,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 13:57:21,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-11-23 13:57:21,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:57:21,515 INFO L225 Difference]: With dead ends: 52 [2018-11-23 13:57:21,515 INFO L226 Difference]: Without dead ends: 52 [2018-11-23 13:57:21,516 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 13:57:21,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-23 13:57:21,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2018-11-23 13:57:21,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-23 13:57:21,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2018-11-23 13:57:21,519 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 26 [2018-11-23 13:57:21,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:57:21,520 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2018-11-23 13:57:21,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 13:57:21,520 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2018-11-23 13:57:21,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-23 13:57:21,520 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:57:21,521 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:57:21,523 INFO L423 AbstractCegarLoop]: === Iteration 10 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2018-11-23 13:57:21,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:57:21,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1992931931, now seen corresponding path program 1 times [2018-11-23 13:57:21,523 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:57:21,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:57:21,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:21,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:57:21,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:57:21,574 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:57:21,574 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:57:21,574 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80050536-03ad-4774-a9d8-95dbf43e3f21/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 [2018-11-23 13:57:21,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:57:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:57:21,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:57:21,647 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:57:21,661 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 13:57:21,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2018-11-23 13:57:21,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 13:57:21,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 13:57:21,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-11-23 13:57:21,662 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 11 states. [2018-11-23 13:57:21,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:57:21,738 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2018-11-23 13:57:21,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 13:57:21,739 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2018-11-23 13:57:21,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:57:21,739 INFO L225 Difference]: With dead ends: 78 [2018-11-23 13:57:21,739 INFO L226 Difference]: Without dead ends: 78 [2018-11-23 13:57:21,739 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2018-11-23 13:57:21,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-11-23 13:57:21,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 62. [2018-11-23 13:57:21,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-23 13:57:21,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2018-11-23 13:57:21,743 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 27 [2018-11-23 13:57:21,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:57:21,744 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2018-11-23 13:57:21,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 13:57:21,744 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2018-11-23 13:57:21,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-23 13:57:21,744 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:57:21,745 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:57:21,745 INFO L423 AbstractCegarLoop]: === Iteration 11 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2018-11-23 13:57:21,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:57:21,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1979886526, now seen corresponding path program 2 times [2018-11-23 13:57:21,745 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:57:21,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:57:21,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:21,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:57:21,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:57:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-23 13:57:21,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:57:21,791 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80050536-03ad-4774-a9d8-95dbf43e3f21/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 [2018-11-23 13:57:21,808 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 13:57:21,817 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-23 13:57:21,818 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 13:57:21,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:57:21,833 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-23 13:57:21,833 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 13:57:21,837 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:57:21,837 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-23 13:57:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-23 13:57:21,910 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 13:57:21,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2018-11-23 13:57:21,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 13:57:21,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 13:57:21,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-23 13:57:21,911 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 9 states. [2018-11-23 13:57:22,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:57:22,040 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2018-11-23 13:57:22,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 13:57:22,041 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2018-11-23 13:57:22,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:57:22,041 INFO L225 Difference]: With dead ends: 89 [2018-11-23 13:57:22,041 INFO L226 Difference]: Without dead ends: 89 [2018-11-23 13:57:22,042 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2018-11-23 13:57:22,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-11-23 13:57:22,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2018-11-23 13:57:22,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-11-23 13:57:22,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2018-11-23 13:57:22,046 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 32 [2018-11-23 13:57:22,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:57:22,047 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2018-11-23 13:57:22,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 13:57:22,047 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2018-11-23 13:57:22,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-23 13:57:22,048 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:57:22,049 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:57:22,049 INFO L423 AbstractCegarLoop]: === Iteration 12 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2018-11-23 13:57:22,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:57:22,049 INFO L82 PathProgramCache]: Analyzing trace with hash 2014379143, now seen corresponding path program 2 times [2018-11-23 13:57:22,049 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:57:22,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:57:22,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:22,050 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 13:57:22,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:57:22,121 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-23 13:57:22,121 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:57:22,121 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80050536-03ad-4774-a9d8-95dbf43e3f21/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 [2018-11-23 13:57:22,128 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 13:57:22,142 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 13:57:22,142 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 13:57:22,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:57:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-23 13:57:22,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 13:57:22,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 14 [2018-11-23 13:57:22,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-23 13:57:22,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-23 13:57:22,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2018-11-23 13:57:22,197 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 14 states. [2018-11-23 13:57:22,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:57:22,376 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2018-11-23 13:57:22,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 13:57:22,377 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2018-11-23 13:57:22,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:57:22,378 INFO L225 Difference]: With dead ends: 95 [2018-11-23 13:57:22,378 INFO L226 Difference]: Without dead ends: 89 [2018-11-23 13:57:22,378 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2018-11-23 13:57:22,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-11-23 13:57:22,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2018-11-23 13:57:22,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-11-23 13:57:22,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2018-11-23 13:57:22,382 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 38 [2018-11-23 13:57:22,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:57:22,382 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2018-11-23 13:57:22,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-23 13:57:22,382 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2018-11-23 13:57:22,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-23 13:57:22,383 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:57:22,383 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:57:22,383 INFO L423 AbstractCegarLoop]: === Iteration 13 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2018-11-23 13:57:22,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:57:22,384 INFO L82 PathProgramCache]: Analyzing trace with hash -174164318, now seen corresponding path program 3 times [2018-11-23 13:57:22,384 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:57:22,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:57:22,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:22,384 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 13:57:22,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:57:22,433 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-23 13:57:22,434 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:57:22,434 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80050536-03ad-4774-a9d8-95dbf43e3f21/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 [2018-11-23 13:57:22,446 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 13:57:22,460 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-23 13:57:22,461 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 13:57:22,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:57:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-23 13:57:22,484 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 13:57:22,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2018-11-23 13:57:22,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 13:57:22,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 13:57:22,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-23 13:57:22,485 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand 7 states. [2018-11-23 13:57:22,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:57:22,536 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2018-11-23 13:57:22,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 13:57:22,536 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2018-11-23 13:57:22,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:57:22,537 INFO L225 Difference]: With dead ends: 82 [2018-11-23 13:57:22,537 INFO L226 Difference]: Without dead ends: 82 [2018-11-23 13:57:22,538 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-11-23 13:57:22,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-11-23 13:57:22,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2018-11-23 13:57:22,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-11-23 13:57:22,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2018-11-23 13:57:22,542 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 43 [2018-11-23 13:57:22,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:57:22,542 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2018-11-23 13:57:22,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 13:57:22,542 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2018-11-23 13:57:22,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-23 13:57:22,543 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:57:22,543 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:57:22,543 INFO L423 AbstractCegarLoop]: === Iteration 14 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2018-11-23 13:57:22,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:57:22,543 INFO L82 PathProgramCache]: Analyzing trace with hash -2125667663, now seen corresponding path program 1 times [2018-11-23 13:57:22,543 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:57:22,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:57:22,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:22,544 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 13:57:22,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:57:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-11-23 13:57:22,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:57:22,599 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80050536-03ad-4774-a9d8-95dbf43e3f21/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 [2018-11-23 13:57:22,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:57:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:57:22,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:57:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 81 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-23 13:57:22,691 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 13:57:22,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2018-11-23 13:57:22,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 13:57:22,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 13:57:22,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-11-23 13:57:22,692 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 13 states. [2018-11-23 13:57:22,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:57:22,859 INFO L93 Difference]: Finished difference Result 123 states and 129 transitions. [2018-11-23 13:57:22,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 13:57:22,860 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 72 [2018-11-23 13:57:22,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:57:22,861 INFO L225 Difference]: With dead ends: 123 [2018-11-23 13:57:22,861 INFO L226 Difference]: Without dead ends: 120 [2018-11-23 13:57:22,861 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2018-11-23 13:57:22,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-11-23 13:57:22,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 93. [2018-11-23 13:57:22,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-11-23 13:57:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2018-11-23 13:57:22,864 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 72 [2018-11-23 13:57:22,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:57:22,865 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2018-11-23 13:57:22,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 13:57:22,865 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2018-11-23 13:57:22,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-11-23 13:57:22,866 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:57:22,866 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:57:22,866 INFO L423 AbstractCegarLoop]: === Iteration 15 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2018-11-23 13:57:22,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:57:22,867 INFO L82 PathProgramCache]: Analyzing trace with hash 241209475, now seen corresponding path program 2 times [2018-11-23 13:57:22,867 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:57:22,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:57:22,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:22,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:57:22,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:57:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:57:22,929 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2018-11-23 13:57:22,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:57:22,929 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80050536-03ad-4774-a9d8-95dbf43e3f21/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 13:57:22,938 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 13:57:22,949 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-23 13:57:22,949 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 13:57:22,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:57:22,991 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:57:22,992 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-11-23 13:57:22,992 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 13:57:22,997 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. [2018-11-23 13:57:22,997 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-11-23 13:57:23,018 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:57:23,019 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-11-23 13:57:23,019 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 13:57:23,021 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. [2018-11-23 13:57:23,021 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-11-23 13:57:23,039 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:57:23,039 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-11-23 13:57:23,040 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 13:57:23,044 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. [2018-11-23 13:57:23,044 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-11-23 13:57:23,067 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:57:23,068 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-11-23 13:57:23,069 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 13:57:23,071 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. [2018-11-23 13:57:23,071 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-11-23 13:57:23,092 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:57:23,092 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-11-23 13:57:23,092 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 13:57:23,094 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. [2018-11-23 13:57:23,094 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-11-23 13:57:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2018-11-23 13:57:23,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 13:57:23,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2018-11-23 13:57:23,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 13:57:23,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 13:57:23,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=93, Unknown=1, NotChecked=0, Total=132 [2018-11-23 13:57:23,423 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 12 states. [2018-11-23 13:57:23,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:57:23,634 INFO L93 Difference]: Finished difference Result 122 states and 129 transitions. [2018-11-23 13:57:23,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-23 13:57:23,635 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 103 [2018-11-23 13:57:23,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:57:23,635 INFO L225 Difference]: With dead ends: 122 [2018-11-23 13:57:23,635 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 13:57:23,636 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 92 SyntacticMatches, 9 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=437, Unknown=1, NotChecked=0, Total=600 [2018-11-23 13:57:23,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 13:57:23,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 13:57:23,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 13:57:23,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 13:57:23,636 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2018-11-23 13:57:23,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:57:23,637 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 13:57:23,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 13:57:23,637 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 13:57:23,637 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 13:57:23,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:57:23 BoogieIcfgContainer [2018-11-23 13:57:23,642 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 13:57:23,642 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 13:57:23,642 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 13:57:23,642 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 13:57:23,643 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:57:20" (3/4) ... [2018-11-23 13:57:23,646 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 13:57:23,651 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 13:57:23,651 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2018-11-23 13:57:23,651 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 13:57:23,655 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2018-11-23 13:57:23,655 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-23 13:57:23,655 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 13:57:23,655 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 13:57:23,687 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_80050536-03ad-4774-a9d8-95dbf43e3f21/bin-2019/uautomizer/witness.graphml [2018-11-23 13:57:23,688 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 13:57:23,688 INFO L168 Benchmark]: Toolchain (without parser) took 4127.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 217.6 MB). Free memory was 958.1 MB in the beginning and 850.6 MB in the end (delta: 107.4 MB). Peak memory consumption was 325.0 MB. Max. memory is 11.5 GB. [2018-11-23 13:57:23,689 INFO L168 Benchmark]: CDTParser took 0.10 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. [2018-11-23 13:57:23,690 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.47 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 13:57:23,690 INFO L168 Benchmark]: Boogie Preprocessor took 66.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 947.3 MB in the beginning and 1.2 GB in the end (delta: -209.0 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. [2018-11-23 13:57:23,691 INFO L168 Benchmark]: RCFGBuilder took 206.55 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: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. [2018-11-23 13:57:23,691 INFO L168 Benchmark]: TraceAbstraction took 3628.61 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 850.6 MB in the end (delta: 277.2 MB). Peak memory consumption was 343.2 MB. Max. memory is 11.5 GB. [2018-11-23 13:57:23,691 INFO L168 Benchmark]: Witness Printer took 45.51 ms. Allocated memory is still 1.2 GB. Free memory is still 850.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:57:23,693 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 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 176.47 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 66.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 947.3 MB in the beginning and 1.2 GB in the end (delta: -209.0 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 206.55 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: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3628.61 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 850.6 MB in the end (delta: 277.2 MB). Peak memory consumption was 343.2 MB. Max. memory is 11.5 GB. * Witness Printer took 45.51 ms. Allocated memory is still 1.2 GB. Free memory is still 850.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 23]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 23]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 26]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 26]: 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, 3.5s OverallTime, 15 OverallIterations, 7 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 383 SDtfs, 927 SDslu, 962 SDs, 0 SdLazy, 1344 SolverSat, 251 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 486 GetRequests, 346 SyntacticMatches, 15 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=14, 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, 15 MinimizatonAttempts, 134 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 840 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 817 ConstructedInterpolants, 76 QuantifiedInterpolants, 158485 SizeOfPredicates, 15 NumberOfNonLiveVariables, 864 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 23 InterpolantComputations, 11 PerfectInterpolantSequences, 754/881 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...