./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/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 0.1.24-cad4683 [2019-11-15 23:25:55,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:25:55,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:25:55,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:25:55,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:25:55,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:25:55,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:25:55,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:25:55,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:25:55,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:25:55,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:25:55,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:25:55,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:25:55,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:25:55,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:25:55,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:25:55,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:25:55,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:25:55,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:25:55,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:25:55,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:25:55,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:25:55,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:25:55,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:25:55,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:25:55,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:25:55,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:25:55,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:25:55,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:25:55,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:25:55,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:25:55,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:25:55,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:25:55,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:25:55,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:25:55,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:25:55,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:25:55,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:25:55,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:25:55,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:25:55,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:25:55,919 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-15 23:25:55,953 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:25:55,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:25:55,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:25:55,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:25:55,955 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:25:55,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:25:55,956 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:25:55,956 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 23:25:55,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:25:55,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:25:55,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:25:55,957 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 23:25:55,957 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 23:25:55,957 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 23:25:55,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:25:55,958 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:25:55,958 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:25:55,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:25:55,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:25:55,959 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:25:55,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:25:55,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:25:55,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:25:55,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:25:55,960 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:25:55,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:25:55,960 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/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 [2019-11-15 23:25:56,012 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:25:56,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:25:56,027 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:25:56,029 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:25:56,029 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:25:56,030 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c [2019-11-15 23:25:56,089 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/data/4b405514b/f24e4fb71d5d41b0bdba795489ae1ea8/FLAG81dd8602a [2019-11-15 23:25:56,528 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:25:56,529 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c [2019-11-15 23:25:56,536 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/data/4b405514b/f24e4fb71d5d41b0bdba795489ae1ea8/FLAG81dd8602a [2019-11-15 23:25:56,973 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/data/4b405514b/f24e4fb71d5d41b0bdba795489ae1ea8 [2019-11-15 23:25:56,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:25:56,976 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 23:25:56,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:25:56,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:25:56,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:25:56,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:25:56" (1/1) ... [2019-11-15 23:25:56,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@433af1c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:56, skipping insertion in model container [2019-11-15 23:25:56,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:25:56" (1/1) ... [2019-11-15 23:25:56,997 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:25:57,015 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:25:57,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:25:57,268 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:25:57,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:25:57,306 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:25:57,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:57 WrapperNode [2019-11-15 23:25:57,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:25:57,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:25:57,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:25:57,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:25:57,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:57" (1/1) ... [2019-11-15 23:25:57,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:57" (1/1) ... [2019-11-15 23:25:57,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:57" (1/1) ... [2019-11-15 23:25:57,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:57" (1/1) ... [2019-11-15 23:25:57,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:57" (1/1) ... [2019-11-15 23:25:57,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:57" (1/1) ... [2019-11-15 23:25:57,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:57" (1/1) ... [2019-11-15 23:25:57,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:25:57,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:25:57,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:25:57,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:25:57,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/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 [2019-11-15 23:25:57,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 23:25:57,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:25:57,432 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-11-15 23:25:57,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 23:25:57,432 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-11-15 23:25:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 23:25:57,434 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 23:25:57,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:25:57,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 23:25:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:25:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 23:25:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:25:57,921 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:25:57,922 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-15 23:25:57,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:25:57 BoogieIcfgContainer [2019-11-15 23:25:57,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:25:57,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:25:57,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:25:57,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:25:57,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:25:56" (1/3) ... [2019-11-15 23:25:57,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dcaf04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:25:57, skipping insertion in model container [2019-11-15 23:25:57,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:57" (2/3) ... [2019-11-15 23:25:57,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dcaf04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:25:57, skipping insertion in model container [2019-11-15 23:25:57,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:25:57" (3/3) ... [2019-11-15 23:25:57,932 INFO L109 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength5.c [2019-11-15 23:25:57,943 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:25:57,951 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-11-15 23:25:57,964 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-11-15 23:25:57,986 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:25:57,986 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 23:25:57,986 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:25:57,987 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:25:57,987 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:25:57,987 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:25:57,987 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:25:57,987 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:25:58,005 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-11-15 23:25:58,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 23:25:58,017 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:25:58,018 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:25:58,020 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 23:25:58,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:25:58,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2019-11-15 23:25:58,035 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:25:58,035 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392294839] [2019-11-15 23:25:58,036 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:58,036 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:58,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:25:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:58,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:25:58,221 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392294839] [2019-11-15 23:25:58,222 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:25:58,223 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 23:25:58,223 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099390398] [2019-11-15 23:25:58,228 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:25:58,228 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:25:58,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:25:58,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:25:58,247 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2019-11-15 23:25:58,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:25:58,608 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2019-11-15 23:25:58,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 23:25:58,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-15 23:25:58,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:25:58,628 INFO L225 Difference]: With dead ends: 58 [2019-11-15 23:25:58,628 INFO L226 Difference]: Without dead ends: 54 [2019-11-15 23:25:58,630 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:25:58,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-15 23:25:58,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2019-11-15 23:25:58,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-15 23:25:58,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2019-11-15 23:25:58,713 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2019-11-15 23:25:58,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:25:58,715 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2019-11-15 23:25:58,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:25:58,716 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2019-11-15 23:25:58,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 23:25:58,718 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:25:58,718 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:25:58,718 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 23:25:58,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:25:58,720 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2019-11-15 23:25:58,720 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:25:58,720 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055724702] [2019-11-15 23:25:58,721 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:58,721 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:58,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:25:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:25:58,834 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055724702] [2019-11-15 23:25:58,834 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:25:58,834 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 23:25:58,835 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79335229] [2019-11-15 23:25:58,836 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:25:58,836 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:25:58,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:25:58,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:25:58,837 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 6 states. [2019-11-15 23:25:59,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:25:59,121 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2019-11-15 23:25:59,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:25:59,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-15 23:25:59,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:25:59,124 INFO L225 Difference]: With dead ends: 59 [2019-11-15 23:25:59,124 INFO L226 Difference]: Without dead ends: 59 [2019-11-15 23:25:59,125 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:25:59,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-15 23:25:59,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 45. [2019-11-15 23:25:59,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-15 23:25:59,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2019-11-15 23:25:59,142 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 11 [2019-11-15 23:25:59,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:25:59,142 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2019-11-15 23:25:59,143 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:25:59,143 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2019-11-15 23:25:59,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 23:25:59,144 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:25:59,144 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:25:59,144 INFO L410 AbstractCegarLoop]: === Iteration 3 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 23:25:59,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:25:59,145 INFO L82 PathProgramCache]: Analyzing trace with hash 143250926, now seen corresponding path program 1 times [2019-11-15 23:25:59,146 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:25:59,146 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133921278] [2019-11-15 23:25:59,147 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:59,148 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:59,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:25:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:59,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:25:59,254 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133921278] [2019-11-15 23:25:59,254 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:25:59,254 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:25:59,254 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135098700] [2019-11-15 23:25:59,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:25:59,255 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:25:59,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:25:59,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:25:59,256 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 4 states. [2019-11-15 23:25:59,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:25:59,358 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2019-11-15 23:25:59,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:25:59,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-15 23:25:59,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:25:59,361 INFO L225 Difference]: With dead ends: 43 [2019-11-15 23:25:59,362 INFO L226 Difference]: Without dead ends: 43 [2019-11-15 23:25:59,362 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:25:59,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-15 23:25:59,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-11-15 23:25:59,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-15 23:25:59,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2019-11-15 23:25:59,369 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 15 [2019-11-15 23:25:59,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:25:59,369 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2019-11-15 23:25:59,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:25:59,369 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2019-11-15 23:25:59,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 23:25:59,370 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:25:59,370 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:25:59,371 INFO L410 AbstractCegarLoop]: === Iteration 4 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 23:25:59,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:25:59,371 INFO L82 PathProgramCache]: Analyzing trace with hash 143250927, now seen corresponding path program 1 times [2019-11-15 23:25:59,371 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:25:59,371 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904420731] [2019-11-15 23:25:59,372 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:59,372 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:59,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:25:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:59,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:25:59,468 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904420731] [2019-11-15 23:25:59,468 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:25:59,468 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:25:59,469 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082297429] [2019-11-15 23:25:59,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:25:59,469 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:25:59,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:25:59,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:25:59,470 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 4 states. [2019-11-15 23:25:59,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:25:59,585 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2019-11-15 23:25:59,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:25:59,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-15 23:25:59,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:25:59,587 INFO L225 Difference]: With dead ends: 47 [2019-11-15 23:25:59,587 INFO L226 Difference]: Without dead ends: 47 [2019-11-15 23:25:59,588 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:25:59,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-15 23:25:59,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2019-11-15 23:25:59,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-15 23:25:59,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2019-11-15 23:25:59,595 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 15 [2019-11-15 23:25:59,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:25:59,595 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2019-11-15 23:25:59,595 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:25:59,596 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2019-11-15 23:25:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-15 23:25:59,597 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:25:59,597 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:25:59,597 INFO L410 AbstractCegarLoop]: === Iteration 5 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 23:25:59,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:25:59,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1902162976, now seen corresponding path program 1 times [2019-11-15 23:25:59,598 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:25:59,598 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974405098] [2019-11-15 23:25:59,598 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:59,598 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:59,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:25:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:59,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:25:59,704 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974405098] [2019-11-15 23:25:59,704 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26304056] [2019-11-15 23:25:59,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:25:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:59,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 23:25:59,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:25:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:25:59,829 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:25:59,829 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-11-15 23:25:59,829 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666946309] [2019-11-15 23:25:59,831 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:25:59,832 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:25:59,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:25:59,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:25:59,833 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 6 states. [2019-11-15 23:25:59,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:25:59,996 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2019-11-15 23:25:59,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 23:25:59,997 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-11-15 23:25:59,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:25:59,998 INFO L225 Difference]: With dead ends: 69 [2019-11-15 23:25:59,999 INFO L226 Difference]: Without dead ends: 69 [2019-11-15 23:25:59,999 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:26:00,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-11-15 23:26:00,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2019-11-15 23:26:00,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-15 23:26:00,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2019-11-15 23:26:00,008 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 21 [2019-11-15 23:26:00,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:26:00,008 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2019-11-15 23:26:00,008 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:26:00,008 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2019-11-15 23:26:00,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 23:26:00,009 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:26:00,009 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:26:00,215 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:00,216 INFO L410 AbstractCegarLoop]: === Iteration 6 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 23:26:00,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:26:00,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1165178250, now seen corresponding path program 1 times [2019-11-15 23:26:00,217 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:26:00,217 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061161508] [2019-11-15 23:26:00,218 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:00,218 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:00,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:26:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:26:00,370 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061161508] [2019-11-15 23:26:00,370 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172588843] [2019-11-15 23:26:00,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:00,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 23:26:00,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:26:00,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-15 23:26:00,439 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:26:00,439 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2019-11-15 23:26:00,439 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528686099] [2019-11-15 23:26:00,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:26:00,440 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:26:00,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:26:00,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:26:00,441 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 3 states. [2019-11-15 23:26:00,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:26:00,488 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2019-11-15 23:26:00,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:26:00,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-11-15 23:26:00,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:26:00,491 INFO L225 Difference]: With dead ends: 62 [2019-11-15 23:26:00,491 INFO L226 Difference]: Without dead ends: 62 [2019-11-15 23:26:00,492 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:26:00,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-11-15 23:26:00,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2019-11-15 23:26:00,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-15 23:26:00,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2019-11-15 23:26:00,498 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 22 [2019-11-15 23:26:00,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:26:00,499 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2019-11-15 23:26:00,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:26:00,499 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2019-11-15 23:26:00,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-15 23:26:00,500 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:26:00,501 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:26:00,702 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:00,702 INFO L410 AbstractCegarLoop]: === Iteration 7 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 23:26:00,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:26:00,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1760787427, now seen corresponding path program 1 times [2019-11-15 23:26:00,703 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:26:00,703 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512842578] [2019-11-15 23:26:00,703 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:00,704 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:00,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:26:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:00,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:26:00,793 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512842578] [2019-11-15 23:26:00,793 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760156350] [2019-11-15 23:26:00,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:00,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 23:26:00,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:26:00,940 INFO L341 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-15 23:26:00,941 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2019-11-15 23:26:00,941 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:26:00,947 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:26:00,948 INFO L496 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. [2019-11-15 23:26:00,949 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2019-11-15 23:26:01,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:26:01,004 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:26:01,004 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-11-15 23:26:01,004 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084797836] [2019-11-15 23:26:01,005 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 23:26:01,005 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:26:01,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 23:26:01,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:26:01,006 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 8 states. [2019-11-15 23:26:01,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:26:01,197 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2019-11-15 23:26:01,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 23:26:01,198 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2019-11-15 23:26:01,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:26:01,199 INFO L225 Difference]: With dead ends: 53 [2019-11-15 23:26:01,199 INFO L226 Difference]: Without dead ends: 53 [2019-11-15 23:26:01,199 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-11-15 23:26:01,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-15 23:26:01,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2019-11-15 23:26:01,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-15 23:26:01,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2019-11-15 23:26:01,204 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 23 [2019-11-15 23:26:01,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:26:01,204 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2019-11-15 23:26:01,204 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 23:26:01,205 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2019-11-15 23:26:01,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-15 23:26:01,207 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:26:01,208 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:26:01,415 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:01,416 INFO L410 AbstractCegarLoop]: === Iteration 8 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 23:26:01,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:26:01,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1760787428, now seen corresponding path program 1 times [2019-11-15 23:26:01,416 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:26:01,417 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076879290] [2019-11-15 23:26:01,417 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:01,417 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:01,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:26:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:01,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:26:01,572 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076879290] [2019-11-15 23:26:01,574 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816241939] [2019-11-15 23:26:01,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:01,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-15 23:26:01,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:26:01,695 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:26:01,695 INFO L375 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 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2019-11-15 23:26:01,696 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:26:01,720 INFO L567 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2019-11-15 23:26:01,721 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:26:01,722 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2019-11-15 23:26:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:26:01,809 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:26:01,809 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-11-15 23:26:01,809 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007296047] [2019-11-15 23:26:01,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 23:26:01,810 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:26:01,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 23:26:01,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-11-15 23:26:01,810 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 10 states. [2019-11-15 23:26:02,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:26:02,059 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2019-11-15 23:26:02,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 23:26:02,060 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2019-11-15 23:26:02,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:26:02,061 INFO L225 Difference]: With dead ends: 55 [2019-11-15 23:26:02,062 INFO L226 Difference]: Without dead ends: 55 [2019-11-15 23:26:02,062 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-11-15 23:26:02,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-15 23:26:02,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2019-11-15 23:26:02,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-15 23:26:02,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2019-11-15 23:26:02,072 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 23 [2019-11-15 23:26:02,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:26:02,075 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2019-11-15 23:26:02,075 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 23:26:02,076 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2019-11-15 23:26:02,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-15 23:26:02,079 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:26:02,079 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:26:02,285 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:02,285 INFO L410 AbstractCegarLoop]: === Iteration 9 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 23:26:02,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:26:02,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1134972881, now seen corresponding path program 1 times [2019-11-15 23:26:02,286 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:26:02,286 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441059179] [2019-11-15 23:26:02,286 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:02,286 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:02,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:26:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:26:02,403 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441059179] [2019-11-15 23:26:02,403 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929384610] [2019-11-15 23:26:02,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:02,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 23:26:02,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:26:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:26:02,517 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:26:02,517 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2019-11-15 23:26:02,517 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418696358] [2019-11-15 23:26:02,517 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:26:02,518 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:26:02,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:26:02,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-15 23:26:02,518 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 6 states. [2019-11-15 23:26:02,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:26:02,657 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2019-11-15 23:26:02,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:26:02,658 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-11-15 23:26:02,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:26:02,659 INFO L225 Difference]: With dead ends: 62 [2019-11-15 23:26:02,659 INFO L226 Difference]: Without dead ends: 59 [2019-11-15 23:26:02,660 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-15 23:26:02,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-15 23:26:02,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2019-11-15 23:26:02,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-15 23:26:02,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2019-11-15 23:26:02,665 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 26 [2019-11-15 23:26:02,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:26:02,665 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2019-11-15 23:26:02,665 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:26:02,666 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2019-11-15 23:26:02,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-15 23:26:02,666 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:26:02,667 INFO L380 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] [2019-11-15 23:26:02,876 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:02,876 INFO L410 AbstractCegarLoop]: === Iteration 10 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 23:26:02,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:26:02,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1992931931, now seen corresponding path program 1 times [2019-11-15 23:26:02,877 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:26:02,877 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101429651] [2019-11-15 23:26:02,877 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:02,877 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:02,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:26:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:02,972 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:26:02,972 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101429651] [2019-11-15 23:26:02,973 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839481366] [2019-11-15 23:26:02,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:03,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-15 23:26:03,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:26:03,096 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:26:03,096 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:26:03,096 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 12 [2019-11-15 23:26:03,096 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77244190] [2019-11-15 23:26:03,097 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-15 23:26:03,097 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:26:03,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-15 23:26:03,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-11-15 23:26:03,098 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 12 states. [2019-11-15 23:26:03,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:26:03,434 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2019-11-15 23:26:03,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 23:26:03,434 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2019-11-15 23:26:03,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:26:03,435 INFO L225 Difference]: With dead ends: 79 [2019-11-15 23:26:03,435 INFO L226 Difference]: Without dead ends: 79 [2019-11-15 23:26:03,436 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2019-11-15 23:26:03,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-11-15 23:26:03,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 63. [2019-11-15 23:26:03,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-15 23:26:03,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2019-11-15 23:26:03,443 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 27 [2019-11-15 23:26:03,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:26:03,443 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2019-11-15 23:26:03,443 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-15 23:26:03,446 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2019-11-15 23:26:03,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-15 23:26:03,450 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:26:03,450 INFO L380 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] [2019-11-15 23:26:03,654 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:03,654 INFO L410 AbstractCegarLoop]: === Iteration 11 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 23:26:03,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:26:03,655 INFO L82 PathProgramCache]: Analyzing trace with hash -790766996, now seen corresponding path program 1 times [2019-11-15 23:26:03,655 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:26:03,655 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741595140] [2019-11-15 23:26:03,656 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:03,656 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:03,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:26:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:03,820 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-15 23:26:03,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741595140] [2019-11-15 23:26:03,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129200715] [2019-11-15 23:26:03,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:03,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-15 23:26:03,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:26:03,887 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_13|], 1=[|v_#valid_25|]} [2019-11-15 23:26:03,892 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:26:03,893 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 11 [2019-11-15 23:26:03,893 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:26:03,904 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:26:03,907 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:26:03,912 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 5 treesize of output 3 [2019-11-15 23:26:03,912 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:26:03,921 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:26:03,922 INFO L496 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. [2019-11-15 23:26:03,922 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2019-11-15 23:26:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-15 23:26:04,061 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:26:04,061 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2019-11-15 23:26:04,061 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516274710] [2019-11-15 23:26:04,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-15 23:26:04,062 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:26:04,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-15 23:26:04,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-15 23:26:04,063 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 9 states. [2019-11-15 23:26:04,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:26:04,344 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2019-11-15 23:26:04,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 23:26:04,345 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2019-11-15 23:26:04,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:26:04,346 INFO L225 Difference]: With dead ends: 67 [2019-11-15 23:26:04,346 INFO L226 Difference]: Without dead ends: 67 [2019-11-15 23:26:04,347 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-11-15 23:26:04,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-11-15 23:26:04,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2019-11-15 23:26:04,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-15 23:26:04,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2019-11-15 23:26:04,360 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 31 [2019-11-15 23:26:04,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:26:04,362 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2019-11-15 23:26:04,363 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-15 23:26:04,363 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2019-11-15 23:26:04,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-15 23:26:04,368 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:26:04,368 INFO L380 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] [2019-11-15 23:26:04,572 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:04,573 INFO L410 AbstractCegarLoop]: === Iteration 12 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 23:26:04,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:26:04,573 INFO L82 PathProgramCache]: Analyzing trace with hash 894123677, now seen corresponding path program 1 times [2019-11-15 23:26:04,573 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:26:04,573 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786961224] [2019-11-15 23:26:04,573 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:04,573 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:04,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:26:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:04,650 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-15 23:26:04,650 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786961224] [2019-11-15 23:26:04,650 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261620479] [2019-11-15 23:26:04,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:04,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:26:04,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:26:04,749 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-15 23:26:04,750 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:26:04,750 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-11-15 23:26:04,750 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359327698] [2019-11-15 23:26:04,751 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 23:26:04,751 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:26:04,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 23:26:04,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:26:04,751 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 7 states. [2019-11-15 23:26:04,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:26:04,887 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2019-11-15 23:26:04,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:26:04,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2019-11-15 23:26:04,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:26:04,889 INFO L225 Difference]: With dead ends: 93 [2019-11-15 23:26:04,889 INFO L226 Difference]: Without dead ends: 93 [2019-11-15 23:26:04,889 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:26:04,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-11-15 23:26:04,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 72. [2019-11-15 23:26:04,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-15 23:26:04,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2019-11-15 23:26:04,896 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 37 [2019-11-15 23:26:04,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:26:04,897 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2019-11-15 23:26:04,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 23:26:04,897 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2019-11-15 23:26:04,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-15 23:26:04,899 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:26:04,899 INFO L380 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] [2019-11-15 23:26:05,103 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:05,104 INFO L410 AbstractCegarLoop]: === Iteration 13 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 23:26:05,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:26:05,104 INFO L82 PathProgramCache]: Analyzing trace with hash -174164318, now seen corresponding path program 2 times [2019-11-15 23:26:05,105 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:26:05,105 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867706799] [2019-11-15 23:26:05,105 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:05,105 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:05,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:26:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-15 23:26:05,225 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867706799] [2019-11-15 23:26:05,226 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101195522] [2019-11-15 23:26:05,226 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:05,287 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 23:26:05,287 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:26:05,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 23:26:05,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:26:05,431 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-15 23:26:05,431 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:26:05,431 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2019-11-15 23:26:05,431 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139391392] [2019-11-15 23:26:05,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-15 23:26:05,432 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:26:05,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-15 23:26:05,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-11-15 23:26:05,433 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand 16 states. [2019-11-15 23:26:05,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:26:05,954 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2019-11-15 23:26:05,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-15 23:26:05,955 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 43 [2019-11-15 23:26:05,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:26:05,957 INFO L225 Difference]: With dead ends: 117 [2019-11-15 23:26:05,957 INFO L226 Difference]: Without dead ends: 117 [2019-11-15 23:26:05,957 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2019-11-15 23:26:05,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2019-11-15 23:26:05,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 90. [2019-11-15 23:26:05,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-11-15 23:26:05,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 101 transitions. [2019-11-15 23:26:05,973 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 101 transitions. Word has length 43 [2019-11-15 23:26:05,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:26:05,973 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 101 transitions. [2019-11-15 23:26:05,974 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-15 23:26:05,974 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 101 transitions. [2019-11-15 23:26:05,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-15 23:26:05,975 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:26:05,975 INFO L380 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] [2019-11-15 23:26:06,188 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:06,188 INFO L410 AbstractCegarLoop]: === Iteration 14 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 23:26:06,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:26:06,188 INFO L82 PathProgramCache]: Analyzing trace with hash 2073773289, now seen corresponding path program 2 times [2019-11-15 23:26:06,189 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:26:06,189 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878407694] [2019-11-15 23:26:06,189 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:06,189 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:06,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:26:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:06,379 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-15 23:26:06,380 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878407694] [2019-11-15 23:26:06,380 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690447212] [2019-11-15 23:26:06,380 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:06,439 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 23:26:06,439 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:26:06,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 23:26:06,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:26:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-15 23:26:06,534 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:26:06,534 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 14 [2019-11-15 23:26:06,534 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056160878] [2019-11-15 23:26:06,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-15 23:26:06,535 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:26:06,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-15 23:26:06,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2019-11-15 23:26:06,535 INFO L87 Difference]: Start difference. First operand 90 states and 101 transitions. Second operand 14 states. [2019-11-15 23:26:07,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:26:07,018 INFO L93 Difference]: Finished difference Result 122 states and 129 transitions. [2019-11-15 23:26:07,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-15 23:26:07,018 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2019-11-15 23:26:07,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:26:07,020 INFO L225 Difference]: With dead ends: 122 [2019-11-15 23:26:07,020 INFO L226 Difference]: Without dead ends: 116 [2019-11-15 23:26:07,020 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2019-11-15 23:26:07,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-11-15 23:26:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 100. [2019-11-15 23:26:07,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-11-15 23:26:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2019-11-15 23:26:07,027 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 47 [2019-11-15 23:26:07,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:26:07,027 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2019-11-15 23:26:07,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-15 23:26:07,027 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2019-11-15 23:26:07,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-15 23:26:07,041 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:26:07,041 INFO L380 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] [2019-11-15 23:26:07,245 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:07,245 INFO L410 AbstractCegarLoop]: === Iteration 15 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 23:26:07,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:26:07,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1381084076, now seen corresponding path program 3 times [2019-11-15 23:26:07,246 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:26:07,246 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931888736] [2019-11-15 23:26:07,246 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:07,247 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:07,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:26:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 23 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-15 23:26:07,548 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931888736] [2019-11-15 23:26:07,549 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662860872] [2019-11-15 23:26:07,549 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:07,650 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-15 23:26:07,650 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:26:07,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-15 23:26:07,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:26:07,658 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_14|], 1=[|v_#valid_26|]} [2019-11-15 23:26:07,662 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:26:07,664 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 11 [2019-11-15 23:26:07,664 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:26:07,678 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:26:07,684 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:26:07,687 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 5 treesize of output 3 [2019-11-15 23:26:07,687 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:26:07,695 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:26:07,696 INFO L496 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. [2019-11-15 23:26:07,696 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2019-11-15 23:26:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-15 23:26:08,069 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:26:08,070 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 17 [2019-11-15 23:26:08,071 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121181582] [2019-11-15 23:26:08,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-15 23:26:08,072 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:26:08,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-15 23:26:08,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-11-15 23:26:08,073 INFO L87 Difference]: Start difference. First operand 100 states and 111 transitions. Second operand 18 states. [2019-11-15 23:26:09,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:26:09,296 INFO L93 Difference]: Finished difference Result 126 states and 143 transitions. [2019-11-15 23:26:09,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-15 23:26:09,297 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 52 [2019-11-15 23:26:09,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:26:09,299 INFO L225 Difference]: With dead ends: 126 [2019-11-15 23:26:09,300 INFO L226 Difference]: Without dead ends: 126 [2019-11-15 23:26:09,301 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=231, Invalid=1029, Unknown=0, NotChecked=0, Total=1260 [2019-11-15 23:26:09,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-11-15 23:26:09,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 119. [2019-11-15 23:26:09,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-11-15 23:26:09,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2019-11-15 23:26:09,311 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 52 [2019-11-15 23:26:09,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:26:09,311 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2019-11-15 23:26:09,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-15 23:26:09,311 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2019-11-15 23:26:09,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-11-15 23:26:09,314 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:26:09,314 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:26:09,518 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:09,518 INFO L410 AbstractCegarLoop]: === Iteration 16 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 23:26:09,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:26:09,519 INFO L82 PathProgramCache]: Analyzing trace with hash -185613816, now seen corresponding path program 2 times [2019-11-15 23:26:09,519 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:26:09,519 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744698772] [2019-11-15 23:26:09,519 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:09,520 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:09,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:26:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:09,715 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2019-11-15 23:26:09,715 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744698772] [2019-11-15 23:26:09,715 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578943953] [2019-11-15 23:26:09,715 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:09,786 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-15 23:26:09,787 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:26:09,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 23:26:09,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:26:09,804 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_15|], 1=[|v_#valid_27|]} [2019-11-15 23:26:09,808 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:26:09,810 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 11 [2019-11-15 23:26:09,810 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:26:09,820 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:26:09,823 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:26:09,826 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 5 treesize of output 3 [2019-11-15 23:26:09,826 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:26:09,834 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:26:09,835 INFO L496 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. [2019-11-15 23:26:09,835 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2019-11-15 23:26:10,296 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2019-11-15 23:26:10,296 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:26:10,297 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2019-11-15 23:26:10,297 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978678010] [2019-11-15 23:26:10,298 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:26:10,298 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:26:10,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:26:10,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-11-15 23:26:10,299 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand 6 states. [2019-11-15 23:26:10,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:26:10,356 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2019-11-15 23:26:10,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 23:26:10,357 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2019-11-15 23:26:10,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:26:10,358 INFO L225 Difference]: With dead ends: 118 [2019-11-15 23:26:10,359 INFO L226 Difference]: Without dead ends: 118 [2019-11-15 23:26:10,359 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 125 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-11-15 23:26:10,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-11-15 23:26:10,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2019-11-15 23:26:10,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-11-15 23:26:10,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 130 transitions. [2019-11-15 23:26:10,368 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 130 transitions. Word has length 126 [2019-11-15 23:26:10,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:26:10,370 INFO L462 AbstractCegarLoop]: Abstraction has 118 states and 130 transitions. [2019-11-15 23:26:10,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:26:10,370 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 130 transitions. [2019-11-15 23:26:10,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-15 23:26:10,372 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:26:10,373 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:26:10,585 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:10,586 INFO L410 AbstractCegarLoop]: === Iteration 17 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 23:26:10,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:26:10,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1998281440, now seen corresponding path program 1 times [2019-11-15 23:26:10,586 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:26:10,587 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645294759] [2019-11-15 23:26:10,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:10,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:10,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:26:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2019-11-15 23:26:10,786 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645294759] [2019-11-15 23:26:10,786 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967368697] [2019-11-15 23:26:10,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:10,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-15 23:26:10,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:26:11,040 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 326 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-11-15 23:26:11,041 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:26:11,041 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-11-15 23:26:11,041 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438209563] [2019-11-15 23:26:11,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-15 23:26:11,043 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:26:11,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-15 23:26:11,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2019-11-15 23:26:11,044 INFO L87 Difference]: Start difference. First operand 118 states and 130 transitions. Second operand 18 states. [2019-11-15 23:26:11,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:26:11,674 INFO L93 Difference]: Finished difference Result 181 states and 190 transitions. [2019-11-15 23:26:11,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-15 23:26:11,675 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 129 [2019-11-15 23:26:11,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:26:11,676 INFO L225 Difference]: With dead ends: 181 [2019-11-15 23:26:11,677 INFO L226 Difference]: Without dead ends: 178 [2019-11-15 23:26:11,678 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2019-11-15 23:26:11,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-11-15 23:26:11,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 133. [2019-11-15 23:26:11,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2019-11-15 23:26:11,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 146 transitions. [2019-11-15 23:26:11,685 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 146 transitions. Word has length 129 [2019-11-15 23:26:11,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:26:11,685 INFO L462 AbstractCegarLoop]: Abstraction has 133 states and 146 transitions. [2019-11-15 23:26:11,685 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-15 23:26:11,686 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 146 transitions. [2019-11-15 23:26:11,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-11-15 23:26:11,688 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:26:11,688 INFO L380 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:26:11,892 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:11,892 INFO L410 AbstractCegarLoop]: === Iteration 18 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 23:26:11,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:26:11,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1503661553, now seen corresponding path program 2 times [2019-11-15 23:26:11,892 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:26:11,893 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285304679] [2019-11-15 23:26:11,893 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:11,893 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:26:11,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:26:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:26:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2019-11-15 23:26:12,190 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285304679] [2019-11-15 23:26:12,190 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740168441] [2019-11-15 23:26:12,191 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:12,267 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-15 23:26:12,267 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:26:12,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 23:26:12,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:26:12,334 INFO L341 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2019-11-15 23:26:12,334 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 29 [2019-11-15 23:26:12,335 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:26:12,349 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:26:12,350 INFO L496 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. [2019-11-15 23:26:12,351 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2019-11-15 23:26:12,423 INFO L341 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2019-11-15 23:26:12,424 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 29 [2019-11-15 23:26:12,424 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:26:12,429 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:26:12,430 INFO L496 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. [2019-11-15 23:26:12,430 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2019-11-15 23:26:12,512 INFO L341 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2019-11-15 23:26:12,512 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 29 [2019-11-15 23:26:12,512 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:26:12,518 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:26:12,518 INFO L496 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. [2019-11-15 23:26:12,518 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2019-11-15 23:26:12,613 INFO L341 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2019-11-15 23:26:12,613 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 29 [2019-11-15 23:26:12,614 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:26:12,628 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:26:12,628 INFO L496 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. [2019-11-15 23:26:12,629 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2019-11-15 23:26:12,735 INFO L341 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2019-11-15 23:26:12,736 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 29 [2019-11-15 23:26:12,736 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:26:12,743 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:26:12,743 INFO L496 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. [2019-11-15 23:26:12,744 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2019-11-15 23:26:12,850 INFO L341 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2019-11-15 23:26:12,850 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 29 [2019-11-15 23:26:12,851 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:26:12,860 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:26:12,861 INFO L496 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. [2019-11-15 23:26:12,861 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2019-11-15 23:26:12,950 INFO L341 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2019-11-15 23:26:12,950 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 29 [2019-11-15 23:26:12,950 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:26:12,955 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:26:12,955 INFO L496 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. [2019-11-15 23:26:12,956 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2019-11-15 23:26:13,181 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2019-11-15 23:26:13,181 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:26:13,182 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2019-11-15 23:26:13,182 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990324423] [2019-11-15 23:26:13,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:26:13,183 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:26:13,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:26:13,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2019-11-15 23:26:13,183 INFO L87 Difference]: Start difference. First operand 133 states and 146 transitions. Second operand 6 states. [2019-11-15 23:26:13,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:26:13,270 INFO L93 Difference]: Finished difference Result 132 states and 145 transitions. [2019-11-15 23:26:13,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:26:13,270 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2019-11-15 23:26:13,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:26:13,271 INFO L225 Difference]: With dead ends: 132 [2019-11-15 23:26:13,271 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 23:26:13,271 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 164 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-11-15 23:26:13,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 23:26:13,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 23:26:13,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 23:26:13,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 23:26:13,272 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 165 [2019-11-15 23:26:13,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:26:13,272 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:26:13,273 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:26:13,273 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:26:13,273 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 23:26:13,473 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:26:13,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:26:13 BoogieIcfgContainer [2019-11-15 23:26:13,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:26:13,479 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:26:13,479 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:26:13,479 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:26:13,480 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:25:57" (3/4) ... [2019-11-15 23:26:13,484 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 23:26:13,491 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-15 23:26:13,492 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2019-11-15 23:26:13,492 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-15 23:26:13,497 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2019-11-15 23:26:13,498 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-11-15 23:26:13,498 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-15 23:26:13,498 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-15 23:26:13,543 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_98532864-656c-4493-b855-ba1d341a4090/bin/uautomizer/witness.graphml [2019-11-15 23:26:13,544 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:26:13,545 INFO L168 Benchmark]: Toolchain (without parser) took 16568.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 207.6 MB). Free memory was 944.8 MB in the beginning and 956.9 MB in the end (delta: -12.1 MB). Peak memory consumption was 195.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:26:13,546 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:26:13,546 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -181.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:26:13,547 INFO L168 Benchmark]: Boogie Preprocessor took 39.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:26:13,548 INFO L168 Benchmark]: RCFGBuilder took 576.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:26:13,549 INFO L168 Benchmark]: TraceAbstraction took 15554.03 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 76.5 MB). Free memory was 1.1 GB in the beginning and 966.3 MB in the end (delta: 135.9 MB). Peak memory consumption was 212.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:26:13,549 INFO L168 Benchmark]: Witness Printer took 65.20 ms. Allocated memory is still 1.2 GB. Free memory was 966.3 MB in the beginning and 956.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:26:13,551 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 329.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -181.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 576.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 15554.03 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 76.5 MB). Free memory was 1.1 GB in the beginning and 966.3 MB in the end (delta: 135.9 MB). Peak memory consumption was 212.4 MB. Max. memory is 11.5 GB. * Witness Printer took 65.20 ms. Allocated memory is still 1.2 GB. Free memory was 966.3 MB in the beginning and 956.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 16]: array index is always in bounds For all program executions holds that array index is always in bounds 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: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - 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. Result: SAFE, OverallTime: 15.4s, OverallIterations: 18, TraceHistogramMax: 15, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 439 SDtfs, 1305 SDslu, 990 SDs, 0 SdLazy, 2875 SolverSat, 314 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1058 GetRequests, 807 SyntacticMatches, 38 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 200 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 1595 NumberOfCodeBlocks, 1306 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1563 ConstructedInterpolants, 312 QuantifiedInterpolants, 931419 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1842 ConjunctsInSsa, 113 ConjunctsInUnsatCore, 32 InterpolantComputations, 8 PerfectInterpolantSequences, 3500/3920 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...