./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5_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_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/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 32d9f155778c5c4efaa55d37fdad329bb0d271b5 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 23:28:43,837 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 23:28:43,839 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 23:28:43,846 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 23:28:43,846 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 23:28:43,847 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 23:28:43,847 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 23:28:43,848 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 23:28:43,849 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 23:28:43,850 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 23:28:43,850 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 23:28:43,850 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 23:28:43,851 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 23:28:43,851 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 23:28:43,852 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 23:28:43,852 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 23:28:43,853 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 23:28:43,854 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 23:28:43,856 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 23:28:43,857 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 23:28:43,857 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 23:28:43,858 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 23:28:43,859 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 23:28:43,859 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 23:28:43,860 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 23:28:43,860 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 23:28:43,861 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 23:28:43,861 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 23:28:43,862 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 23:28:43,863 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 23:28:43,863 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 23:28:43,863 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 23:28:43,863 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 23:28:43,864 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 23:28:43,864 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 23:28:43,865 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 23:28:43,865 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-22 23:28:43,873 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 23:28:43,873 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 23:28:43,874 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 23:28:43,874 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 23:28:43,874 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-22 23:28:43,875 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-22 23:28:43,875 INFO L133 SettingsManager]: * Use SBE=true [2018-11-22 23:28:43,875 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 23:28:43,875 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 23:28:43,875 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-22 23:28:43,875 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 23:28:43,876 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 23:28:43,876 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 23:28:43,876 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-22 23:28:43,876 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-22 23:28:43,876 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-22 23:28:43,876 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 23:28:43,876 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 23:28:43,877 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 23:28:43,877 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 23:28:43,877 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 23:28:43,877 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 23:28:43,877 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 23:28:43,877 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 23:28:43,877 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 23:28:43,878 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 23:28:43,878 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-22 23:28:43,878 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 23:28:43,878 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_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/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 -> 32d9f155778c5c4efaa55d37fdad329bb0d271b5 [2018-11-22 23:28:43,903 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 23:28:43,913 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 23:28:43,916 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 23:28:43,917 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 23:28:43,918 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 23:28:43,918 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5_true-valid-memsafety.c [2018-11-22 23:28:43,968 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/data/f7b3b19e1/3b5e8aaa6be0402ead955368a89b99e5/FLAG7c78110c0 [2018-11-22 23:28:44,300 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 23:28:44,300 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5_true-valid-memsafety.c [2018-11-22 23:28:44,304 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/data/f7b3b19e1/3b5e8aaa6be0402ead955368a89b99e5/FLAG7c78110c0 [2018-11-22 23:28:44,725 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/data/f7b3b19e1/3b5e8aaa6be0402ead955368a89b99e5 [2018-11-22 23:28:44,730 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 23:28:44,731 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-22 23:28:44,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 23:28:44,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 23:28:44,734 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 23:28:44,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:28:44" (1/1) ... [2018-11-22 23:28:44,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af1dc5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:28:44, skipping insertion in model container [2018-11-22 23:28:44,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:28:44" (1/1) ... [2018-11-22 23:28:44,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 23:28:44,754 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 23:28:44,858 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:28:44,864 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 23:28:44,875 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:28:44,884 INFO L195 MainTranslator]: Completed translation [2018-11-22 23:28:44,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:28:44 WrapperNode [2018-11-22 23:28:44,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 23:28:44,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 23:28:44,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 23:28:44,885 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 23:28:44,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:28:44" (1/1) ... [2018-11-22 23:28:44,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:28:44" (1/1) ... [2018-11-22 23:28:44,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:28:44" (1/1) ... [2018-11-22 23:28:44,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:28:44" (1/1) ... [2018-11-22 23:28:44,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:28:44" (1/1) ... [2018-11-22 23:28:44,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:28:44" (1/1) ... [2018-11-22 23:28:44,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:28:44" (1/1) ... [2018-11-22 23:28:44,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 23:28:44,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 23:28:44,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 23:28:44,910 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 23:28:44,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:28:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 23:28:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 23:28:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 23:28:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-11-22 23:28:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 23:28:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-11-22 23:28:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-22 23:28:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 23:28:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-22 23:28:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-22 23:28:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-22 23:28:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 23:28:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 23:28:45,159 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 23:28:45,159 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-11-22 23:28:45,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:28:45 BoogieIcfgContainer [2018-11-22 23:28:45,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 23:28:45,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 23:28:45,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 23:28:45,162 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 23:28:45,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:28:44" (1/3) ... [2018-11-22 23:28:45,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c4040c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:28:45, skipping insertion in model container [2018-11-22 23:28:45,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:28:44" (2/3) ... [2018-11-22 23:28:45,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c4040c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:28:45, skipping insertion in model container [2018-11-22 23:28:45,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:28:45" (3/3) ... [2018-11-22 23:28:45,167 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength5_true-valid-memsafety.c [2018-11-22 23:28:45,176 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 23:28:45,183 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2018-11-22 23:28:45,196 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2018-11-22 23:28:45,213 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-22 23:28:45,214 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 23:28:45,214 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-22 23:28:45,214 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 23:28:45,214 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 23:28:45,214 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 23:28:45,215 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 23:28:45,215 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 23:28:45,215 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 23:28:45,229 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-11-22 23:28:45,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-22 23:28:45,236 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:28:45,237 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:28:45,238 INFO L423 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-11-22 23:28:45,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:28:45,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2018-11-22 23:28:45,243 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:28:45,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:28:45,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:45,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:45,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:28:45,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:28:45,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 23:28:45,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 23:28:45,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 23:28:45,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:28:45,349 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2018-11-22 23:28:45,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:28:45,409 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2018-11-22 23:28:45,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 23:28:45,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-22 23:28:45,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:28:45,417 INFO L225 Difference]: With dead ends: 58 [2018-11-22 23:28:45,417 INFO L226 Difference]: Without dead ends: 54 [2018-11-22 23:28:45,418 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:28:45,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-22 23:28:45,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2018-11-22 23:28:45,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-22 23:28:45,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-11-22 23:28:45,444 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2018-11-22 23:28:45,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:28:45,444 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-11-22 23:28:45,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 23:28:45,444 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-11-22 23:28:45,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-22 23:28:45,445 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:28:45,445 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:28:45,445 INFO L423 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-11-22 23:28:45,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:28:45,445 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2018-11-22 23:28:45,446 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:28:45,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:28:45,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:45,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:45,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:28:45,521 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:28:45,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-22 23:28:45,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-22 23:28:45,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-22 23:28:45,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-22 23:28:45,523 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 5 states. [2018-11-22 23:28:45,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:28:45,621 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2018-11-22 23:28:45,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-22 23:28:45,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-22 23:28:45,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:28:45,622 INFO L225 Difference]: With dead ends: 59 [2018-11-22 23:28:45,622 INFO L226 Difference]: Without dead ends: 59 [2018-11-22 23:28:45,623 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 [2018-11-22 23:28:45,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-11-22 23:28:45,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 45. [2018-11-22 23:28:45,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-22 23:28:45,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2018-11-22 23:28:45,629 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 11 [2018-11-22 23:28:45,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:28:45,629 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2018-11-22 23:28:45,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-22 23:28:45,629 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2018-11-22 23:28:45,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-22 23:28:45,630 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:28:45,630 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:28:45,630 INFO L423 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-11-22 23:28:45,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:28:45,631 INFO L82 PathProgramCache]: Analyzing trace with hash 143250926, now seen corresponding path program 1 times [2018-11-22 23:28:45,631 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:28:45,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:28:45,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:45,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:45,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:45,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:28:45,701 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:28:45,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-22 23:28:45,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 23:28:45,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 23:28:45,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:28:45,702 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 3 states. [2018-11-22 23:28:45,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:28:45,717 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2018-11-22 23:28:45,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 23:28:45,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-11-22 23:28:45,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:28:45,719 INFO L225 Difference]: With dead ends: 43 [2018-11-22 23:28:45,719 INFO L226 Difference]: Without dead ends: 43 [2018-11-22 23:28:45,719 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:28:45,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-22 23:28:45,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-22 23:28:45,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-22 23:28:45,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2018-11-22 23:28:45,723 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 15 [2018-11-22 23:28:45,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:28:45,723 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2018-11-22 23:28:45,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 23:28:45,723 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2018-11-22 23:28:45,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-22 23:28:45,723 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:28:45,723 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:28:45,724 INFO L423 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-11-22 23:28:45,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:28:45,724 INFO L82 PathProgramCache]: Analyzing trace with hash 143250927, now seen corresponding path program 1 times [2018-11-22 23:28:45,724 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:28:45,724 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:28:45,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:45,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:45,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:28:45,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:28:45,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 23:28:45,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-22 23:28:45,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-22 23:28:45,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-22 23:28:45,777 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 4 states. [2018-11-22 23:28:45,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:28:45,839 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-11-22 23:28:45,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 23:28:45,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-11-22 23:28:45,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:28:45,840 INFO L225 Difference]: With dead ends: 47 [2018-11-22 23:28:45,840 INFO L226 Difference]: Without dead ends: 47 [2018-11-22 23:28:45,840 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-22 23:28:45,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-22 23:28:45,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2018-11-22 23:28:45,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-22 23:28:45,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2018-11-22 23:28:45,845 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 15 [2018-11-22 23:28:45,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:28:45,846 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2018-11-22 23:28:45,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-22 23:28:45,846 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2018-11-22 23:28:45,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-22 23:28:45,846 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:28:45,846 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] [2018-11-22 23:28:45,847 INFO L423 AbstractCegarLoop]: === Iteration 5 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-11-22 23:28:45,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:28:45,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1902162976, now seen corresponding path program 1 times [2018-11-22 23:28:45,847 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:28:45,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:28:45,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:45,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:45,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:28:45,877 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:28:45,877 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 23:28:45,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:45,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:28:45,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:28:45,948 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 23:28:45,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-11-22 23:28:45,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-22 23:28:45,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-22 23:28:45,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-22 23:28:45,949 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 5 states. [2018-11-22 23:28:46,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:28:46,000 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2018-11-22 23:28:46,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-22 23:28:46,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-11-22 23:28:46,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:28:46,001 INFO L225 Difference]: With dead ends: 69 [2018-11-22 23:28:46,001 INFO L226 Difference]: Without dead ends: 69 [2018-11-22 23:28:46,002 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 [2018-11-22 23:28:46,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-11-22 23:28:46,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2018-11-22 23:28:46,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-22 23:28:46,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-11-22 23:28:46,011 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 21 [2018-11-22 23:28:46,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:28:46,011 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-11-22 23:28:46,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-22 23:28:46,012 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-11-22 23:28:46,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-22 23:28:46,012 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:28:46,012 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:28:46,012 INFO L423 AbstractCegarLoop]: === Iteration 6 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-11-22 23:28:46,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:28:46,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1165178250, now seen corresponding path program 1 times [2018-11-22 23:28:46,013 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:28:46,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:28:46,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:46,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:46,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:46,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:28:46,086 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:28:46,087 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 23:28:46,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:46,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:28:46,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-22 23:28:46,159 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-22 23:28:46,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2018-11-22 23:28:46,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-22 23:28:46,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-22 23:28:46,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-22 23:28:46,160 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 7 states. [2018-11-22 23:28:46,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:28:46,287 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2018-11-22 23:28:46,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-22 23:28:46,288 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-11-22 23:28:46,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:28:46,289 INFO L225 Difference]: With dead ends: 101 [2018-11-22 23:28:46,289 INFO L226 Difference]: Without dead ends: 101 [2018-11-22 23:28:46,290 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-22 23:28:46,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-11-22 23:28:46,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 54. [2018-11-22 23:28:46,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-22 23:28:46,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2018-11-22 23:28:46,296 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 22 [2018-11-22 23:28:46,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:28:46,296 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2018-11-22 23:28:46,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-22 23:28:46,296 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2018-11-22 23:28:46,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-22 23:28:46,297 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:28:46,297 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] [2018-11-22 23:28:46,298 INFO L423 AbstractCegarLoop]: === Iteration 7 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-11-22 23:28:46,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:28:46,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1760787427, now seen corresponding path program 1 times [2018-11-22 23:28:46,298 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:28:46,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:28:46,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:46,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:46,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-22 23:28:46,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:28:46,347 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 23:28:46,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:46,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:28:46,385 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-11-22 23:28:46,390 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 11 [2018-11-22 23:28:46,390 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:28:46,393 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:28:46,396 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:28:46,396 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2018-11-22 23:28:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-22 23:28:46,439 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 23:28:46,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 6 [2018-11-22 23:28:46,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-22 23:28:46,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-22 23:28:46,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-22 23:28:46,440 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 7 states. [2018-11-22 23:28:46,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:28:46,487 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2018-11-22 23:28:46,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-22 23:28:46,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-11-22 23:28:46,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:28:46,488 INFO L225 Difference]: With dead ends: 53 [2018-11-22 23:28:46,488 INFO L226 Difference]: Without dead ends: 53 [2018-11-22 23:28:46,488 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-11-22 23:28:46,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-22 23:28:46,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-11-22 23:28:46,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-22 23:28:46,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2018-11-22 23:28:46,492 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 23 [2018-11-22 23:28:46,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:28:46,492 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2018-11-22 23:28:46,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-22 23:28:46,493 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2018-11-22 23:28:46,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-22 23:28:46,493 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:28:46,493 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] [2018-11-22 23:28:46,494 INFO L423 AbstractCegarLoop]: === Iteration 8 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-11-22 23:28:46,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:28:46,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1760787428, now seen corresponding path program 1 times [2018-11-22 23:28:46,494 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:28:46,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:28:46,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:46,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:46,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-22 23:28:46,578 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:28:46,579 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 23:28:46,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:46,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:28:46,609 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-11-22 23:28:46,614 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:28:46,623 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 2 case distinctions, treesize of input 12 treesize of output 15 [2018-11-22 23:28:46,623 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-22 23:28:46,634 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-22 23:28:46,649 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 2 xjuncts. [2018-11-22 23:28:46,649 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:13, output treesize:24 [2018-11-22 23:28:46,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-22 23:28:46,744 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 23:28:46,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2018-11-22 23:28:46,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-22 23:28:46,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-22 23:28:46,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-22 23:28:46,745 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 9 states. [2018-11-22 23:28:46,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:28:46,839 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2018-11-22 23:28:46,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-22 23:28:46,840 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-11-22 23:28:46,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:28:46,840 INFO L225 Difference]: With dead ends: 55 [2018-11-22 23:28:46,841 INFO L226 Difference]: Without dead ends: 55 [2018-11-22 23:28:46,841 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-11-22 23:28:46,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-22 23:28:46,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2018-11-22 23:28:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-22 23:28:46,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2018-11-22 23:28:46,845 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 23 [2018-11-22 23:28:46,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:28:46,845 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2018-11-22 23:28:46,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-22 23:28:46,845 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2018-11-22 23:28:46,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-22 23:28:46,846 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:28:46,846 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:28:46,846 INFO L423 AbstractCegarLoop]: === Iteration 9 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-11-22 23:28:46,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:28:46,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1134972881, now seen corresponding path program 1 times [2018-11-22 23:28:46,847 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:28:46,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:28:46,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:46,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:46,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:46,892 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-22 23:28:46,892 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:28:46,892 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 23:28:46,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:46,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:28:46,930 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-22 23:28:46,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-22 23:28:46,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2018-11-22 23:28:46,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-22 23:28:46,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-22 23:28:46,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-22 23:28:46,945 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 9 states. [2018-11-22 23:28:47,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:28:47,036 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2018-11-22 23:28:47,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-22 23:28:47,037 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-11-22 23:28:47,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:28:47,037 INFO L225 Difference]: With dead ends: 62 [2018-11-22 23:28:47,037 INFO L226 Difference]: Without dead ends: 59 [2018-11-22 23:28:47,038 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-22 23:28:47,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-11-22 23:28:47,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2018-11-22 23:28:47,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-22 23:28:47,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-11-22 23:28:47,041 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 26 [2018-11-22 23:28:47,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:28:47,041 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-11-22 23:28:47,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-22 23:28:47,041 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-11-22 23:28:47,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-22 23:28:47,042 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:28:47,042 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] [2018-11-22 23:28:47,042 INFO L423 AbstractCegarLoop]: === Iteration 10 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-11-22 23:28:47,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:28:47,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1992931931, now seen corresponding path program 1 times [2018-11-22 23:28:47,043 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:28:47,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:28:47,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:47,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:47,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:47,090 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:28:47,090 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:28:47,091 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 23:28:47,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:47,116 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:28:47,162 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:28:47,177 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 23:28:47,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2018-11-22 23:28:47,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-22 23:28:47,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-22 23:28:47,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-11-22 23:28:47,178 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 11 states. [2018-11-22 23:28:47,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:28:47,282 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2018-11-22 23:28:47,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-22 23:28:47,283 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2018-11-22 23:28:47,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:28:47,283 INFO L225 Difference]: With dead ends: 79 [2018-11-22 23:28:47,284 INFO L226 Difference]: Without dead ends: 79 [2018-11-22 23:28:47,284 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 [2018-11-22 23:28:47,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-11-22 23:28:47,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 63. [2018-11-22 23:28:47,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-22 23:28:47,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2018-11-22 23:28:47,288 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 27 [2018-11-22 23:28:47,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:28:47,288 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2018-11-22 23:28:47,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-22 23:28:47,288 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2018-11-22 23:28:47,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-22 23:28:47,289 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:28:47,289 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:28:47,289 INFO L423 AbstractCegarLoop]: === Iteration 11 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-11-22 23:28:47,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:28:47,289 INFO L82 PathProgramCache]: Analyzing trace with hash -790766996, now seen corresponding path program 1 times [2018-11-22 23:28:47,290 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:28:47,290 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:28:47,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:47,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:47,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:47,345 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-22 23:28:47,345 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:28:47,345 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 23:28:47,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:47,375 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:28:47,387 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2018-11-22 23:28:47,388 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 23:28:47,395 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-11-22 23:28:47,399 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:28:47,400 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 21 [2018-11-22 23:28:47,400 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-22 23:28:47,407 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:28:47,414 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:28:47,415 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2018-11-22 23:28:47,508 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-22 23:28:47,524 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 23:28:47,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2018-11-22 23:28:47,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-22 23:28:47,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-22 23:28:47,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-22 23:28:47,525 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 7 states. [2018-11-22 23:28:47,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:28:47,581 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2018-11-22 23:28:47,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-22 23:28:47,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2018-11-22 23:28:47,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:28:47,582 INFO L225 Difference]: With dead ends: 67 [2018-11-22 23:28:47,582 INFO L226 Difference]: Without dead ends: 67 [2018-11-22 23:28:47,583 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-22 23:28:47,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-11-22 23:28:47,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2018-11-22 23:28:47,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-11-22 23:28:47,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-11-22 23:28:47,586 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 31 [2018-11-22 23:28:47,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:28:47,587 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-11-22 23:28:47,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-22 23:28:47,587 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-11-22 23:28:47,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-22 23:28:47,588 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:28:47,588 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, 1, 1, 1, 1, 1] [2018-11-22 23:28:47,588 INFO L423 AbstractCegarLoop]: === Iteration 12 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-11-22 23:28:47,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:28:47,589 INFO L82 PathProgramCache]: Analyzing trace with hash 894123677, now seen corresponding path program 1 times [2018-11-22 23:28:47,589 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:28:47,589 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:28:47,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:47,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:47,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:47,627 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-22 23:28:47,628 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:28:47,628 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/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 [2018-11-22 23:28:47,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:47,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:28:47,667 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-22 23:28:47,683 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 23:28:47,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-22 23:28:47,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-22 23:28:47,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-22 23:28:47,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-22 23:28:47,684 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 6 states. [2018-11-22 23:28:47,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:28:47,728 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2018-11-22 23:28:47,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-22 23:28:47,729 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2018-11-22 23:28:47,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:28:47,729 INFO L225 Difference]: With dead ends: 93 [2018-11-22 23:28:47,729 INFO L226 Difference]: Without dead ends: 93 [2018-11-22 23:28:47,730 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-22 23:28:47,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-11-22 23:28:47,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 72. [2018-11-22 23:28:47,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-11-22 23:28:47,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2018-11-22 23:28:47,733 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 37 [2018-11-22 23:28:47,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:28:47,733 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2018-11-22 23:28:47,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-22 23:28:47,733 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2018-11-22 23:28:47,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-22 23:28:47,734 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:28:47,734 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] [2018-11-22 23:28:47,734 INFO L423 AbstractCegarLoop]: === Iteration 13 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-11-22 23:28:47,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:28:47,734 INFO L82 PathProgramCache]: Analyzing trace with hash -174164318, now seen corresponding path program 2 times [2018-11-22 23:28:47,734 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:28:47,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:28:47,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:47,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:47,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:47,797 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-22 23:28:47,797 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:28:47,798 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 23:28:47,808 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-22 23:28:47,828 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-22 23:28:47,828 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 23:28:47,830 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:28:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-22 23:28:47,913 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 23:28:47,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2018-11-22 23:28:47,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-22 23:28:47,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-22 23:28:47,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-11-22 23:28:47,914 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand 15 states. [2018-11-22 23:28:48,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:28:48,133 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2018-11-22 23:28:48,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-22 23:28:48,133 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2018-11-22 23:28:48,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:28:48,134 INFO L225 Difference]: With dead ends: 117 [2018-11-22 23:28:48,134 INFO L226 Difference]: Without dead ends: 117 [2018-11-22 23:28:48,134 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2018-11-22 23:28:48,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-11-22 23:28:48,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 90. [2018-11-22 23:28:48,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-11-22 23:28:48,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 101 transitions. [2018-11-22 23:28:48,139 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 101 transitions. Word has length 43 [2018-11-22 23:28:48,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:28:48,139 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 101 transitions. [2018-11-22 23:28:48,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-22 23:28:48,140 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 101 transitions. [2018-11-22 23:28:48,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-22 23:28:48,140 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:28:48,140 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:28:48,141 INFO L423 AbstractCegarLoop]: === Iteration 14 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-11-22 23:28:48,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:28:48,141 INFO L82 PathProgramCache]: Analyzing trace with hash 2073773289, now seen corresponding path program 2 times [2018-11-22 23:28:48,141 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:28:48,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:28:48,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:48,142 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 23:28:48,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:48,237 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-22 23:28:48,237 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:28:48,237 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 23:28:48,252 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-22 23:28:48,285 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-22 23:28:48,285 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 23:28:48,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:28:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-22 23:28:48,353 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 23:28:48,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 13 [2018-11-22 23:28:48,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-22 23:28:48,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-22 23:28:48,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-11-22 23:28:48,354 INFO L87 Difference]: Start difference. First operand 90 states and 101 transitions. Second operand 13 states. [2018-11-22 23:28:48,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:28:48,524 INFO L93 Difference]: Finished difference Result 122 states and 129 transitions. [2018-11-22 23:28:48,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-22 23:28:48,524 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2018-11-22 23:28:48,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:28:48,525 INFO L225 Difference]: With dead ends: 122 [2018-11-22 23:28:48,525 INFO L226 Difference]: Without dead ends: 116 [2018-11-22 23:28:48,525 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2018-11-22 23:28:48,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-11-22 23:28:48,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 100. [2018-11-22 23:28:48,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-11-22 23:28:48,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2018-11-22 23:28:48,529 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 47 [2018-11-22 23:28:48,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:28:48,529 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2018-11-22 23:28:48,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-22 23:28:48,529 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2018-11-22 23:28:48,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-22 23:28:48,530 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:28:48,530 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:28:48,530 INFO L423 AbstractCegarLoop]: === Iteration 15 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-11-22 23:28:48,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:28:48,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1381084076, now seen corresponding path program 3 times [2018-11-22 23:28:48,530 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:28:48,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:28:48,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:48,531 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 23:28:48,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:48,615 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-11-22 23:28:48,615 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:28:48,615 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 23:28:48,628 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-22 23:28:48,645 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-22 23:28:48,645 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 23:28:48,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:28:48,657 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2018-11-22 23:28:48,657 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 23:28:48,661 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-11-22 23:28:48,663 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:28:48,663 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 21 [2018-11-22 23:28:48,663 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-22 23:28:48,667 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:28:48,673 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:28:48,673 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2018-11-22 23:28:48,824 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-22 23:28:48,850 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 23:28:48,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2018-11-22 23:28:48,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-22 23:28:48,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-22 23:28:48,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-11-22 23:28:48,851 INFO L87 Difference]: Start difference. First operand 100 states and 111 transitions. Second operand 12 states. [2018-11-22 23:28:49,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:28:49,020 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2018-11-22 23:28:49,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-22 23:28:49,020 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2018-11-22 23:28:49,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:28:49,021 INFO L225 Difference]: With dead ends: 99 [2018-11-22 23:28:49,022 INFO L226 Difference]: Without dead ends: 99 [2018-11-22 23:28:49,022 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2018-11-22 23:28:49,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-11-22 23:28:49,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2018-11-22 23:28:49,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-11-22 23:28:49,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions. [2018-11-22 23:28:49,031 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 52 [2018-11-22 23:28:49,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:28:49,031 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions. [2018-11-22 23:28:49,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-22 23:28:49,031 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions. [2018-11-22 23:28:49,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-11-22 23:28:49,032 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:28:49,032 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:28:49,032 INFO L423 AbstractCegarLoop]: === Iteration 16 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-11-22 23:28:49,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:28:49,036 INFO L82 PathProgramCache]: Analyzing trace with hash 267240299, now seen corresponding path program 1 times [2018-11-22 23:28:49,036 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:28:49,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:28:49,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:49,037 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 23:28:49,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:49,081 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-11-22 23:28:49,081 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:28:49,081 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 23:28:49,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:49,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:28:49,179 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 91 proven. 7 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-11-22 23:28:49,193 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 23:28:49,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 15 [2018-11-22 23:28:49,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-22 23:28:49,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-22 23:28:49,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-11-22 23:28:49,194 INFO L87 Difference]: Start difference. First operand 98 states and 105 transitions. Second operand 15 states. [2018-11-22 23:28:49,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:28:49,386 INFO L93 Difference]: Finished difference Result 155 states and 162 transitions. [2018-11-22 23:28:49,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-22 23:28:49,387 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 82 [2018-11-22 23:28:49,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:28:49,387 INFO L225 Difference]: With dead ends: 155 [2018-11-22 23:28:49,387 INFO L226 Difference]: Without dead ends: 152 [2018-11-22 23:28:49,388 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2018-11-22 23:28:49,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-11-22 23:28:49,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 113. [2018-11-22 23:28:49,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-11-22 23:28:49,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2018-11-22 23:28:49,391 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 82 [2018-11-22 23:28:49,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:28:49,391 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2018-11-22 23:28:49,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-22 23:28:49,391 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2018-11-22 23:28:49,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-22 23:28:49,392 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:28:49,392 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:28:49,392 INFO L423 AbstractCegarLoop]: === Iteration 17 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-11-22 23:28:49,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:28:49,393 INFO L82 PathProgramCache]: Analyzing trace with hash -311092151, now seen corresponding path program 2 times [2018-11-22 23:28:49,393 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:28:49,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:28:49,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:49,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:28:49,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:28:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:28:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-11-22 23:28:49,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:28:49,455 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 23:28:49,468 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-22 23:28:49,483 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-22 23:28:49,483 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 23:28:49,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:28:49,524 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:28:49,524 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-11-22 23:28:49,527 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-11-22 23:28:49,527 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:28:49,530 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:28:49,533 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-22 23:28:49,533 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-11-22 23:28:49,581 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:28:49,582 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-11-22 23:28:49,584 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-11-22 23:28:49,585 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:28:49,588 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:28:49,591 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-22 23:28:49,591 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-11-22 23:28:49,622 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:28:49,622 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-11-22 23:28:49,624 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-11-22 23:28:49,624 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:28:49,627 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:28:49,630 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-22 23:28:49,630 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-11-22 23:28:49,661 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:28:49,662 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-11-22 23:28:49,665 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-11-22 23:28:49,665 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:28:49,668 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:28:49,672 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-22 23:28:49,672 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-11-22 23:28:49,707 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:28:49,708 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-11-22 23:28:49,710 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-11-22 23:28:49,710 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:28:49,714 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:28:49,717 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-22 23:28:49,717 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-11-22 23:28:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2018-11-22 23:28:50,250 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-22 23:28:50,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2018-11-22 23:28:50,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-22 23:28:50,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-22 23:28:50,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=93, Unknown=1, NotChecked=0, Total=132 [2018-11-22 23:28:50,251 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand 12 states. [2018-11-22 23:28:50,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:28:50,500 INFO L93 Difference]: Finished difference Result 142 states and 149 transitions. [2018-11-22 23:28:50,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-22 23:28:50,501 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 113 [2018-11-22 23:28:50,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:28:50,501 INFO L225 Difference]: With dead ends: 142 [2018-11-22 23:28:50,501 INFO L226 Difference]: Without dead ends: 0 [2018-11-22 23:28:50,502 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 102 SyntacticMatches, 9 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=162, Invalid=437, Unknown=1, NotChecked=0, Total=600 [2018-11-22 23:28:50,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-22 23:28:50,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-22 23:28:50,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-22 23:28:50,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-22 23:28:50,502 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 113 [2018-11-22 23:28:50,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:28:50,503 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 23:28:50,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-22 23:28:50,503 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-22 23:28:50,503 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-22 23:28:50,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 11:28:50 BoogieIcfgContainer [2018-11-22 23:28:50,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 23:28:50,507 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 23:28:50,507 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 23:28:50,507 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 23:28:50,508 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:28:45" (3/4) ... [2018-11-22 23:28:50,511 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-22 23:28:50,516 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-22 23:28:50,517 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2018-11-22 23:28:50,517 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-22 23:28:50,520 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-11-22 23:28:50,520 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-22 23:28:50,520 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-22 23:28:50,520 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-22 23:28:50,548 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3a0a4952-aee0-4c71-a350-c0ebbc2406d5/bin-2019/uautomizer/witness.graphml [2018-11-22 23:28:50,549 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 23:28:50,549 INFO L168 Benchmark]: Toolchain (without parser) took 5819.06 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 290.5 MB). Free memory was 958.0 MB in the beginning and 959.4 MB in the end (delta: -1.3 MB). Peak memory consumption was 289.1 MB. Max. memory is 11.5 GB. [2018-11-22 23:28:50,550 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 23:28:50,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 153.32 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 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. [2018-11-22 23:28:50,551 INFO L168 Benchmark]: Boogie Preprocessor took 24.38 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 23:28:50,551 INFO L168 Benchmark]: RCFGBuilder took 250.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-22 23:28:50,551 INFO L168 Benchmark]: TraceAbstraction took 5346.54 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 132.1 MB). Free memory was 1.1 GB in the beginning and 966.0 MB in the end (delta: 169.1 MB). Peak memory consumption was 301.2 MB. Max. memory is 11.5 GB. [2018-11-22 23:28:50,552 INFO L168 Benchmark]: Witness Printer took 41.58 ms. Allocated memory is still 1.3 GB. Free memory was 966.0 MB in the beginning and 959.4 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-11-22 23:28:50,556 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 153.32 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 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 24.38 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 250.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5346.54 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 132.1 MB). Free memory was 1.1 GB in the beginning and 966.0 MB in the end (delta: 169.1 MB). Peak memory consumption was 301.2 MB. Max. memory is 11.5 GB. * Witness Printer took 41.58 ms. Allocated memory is still 1.3 GB. Free memory was 966.0 MB in the beginning and 959.4 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - 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, 5.2s OverallTime, 17 OverallIterations, 9 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 437 SDtfs, 1053 SDslu, 1194 SDs, 0 SdLazy, 2054 SolverSat, 231 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 687 GetRequests, 501 SyntacticMatches, 27 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=16, 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, 17 MinimizatonAttempts, 227 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 1145 NumberOfCodeBlocks, 1024 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 1115 ConstructedInterpolants, 152 QuantifiedInterpolants, 378476 SizeOfPredicates, 28 NumberOfNonLiveVariables, 1634 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 30 InterpolantComputations, 7 PerfectInterpolantSequences, 1135/1320 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...