./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i --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/working_dir_6c7945ef-4ebd-42e9-a81f-ef47f80c76e8/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6c7945ef-4ebd-42e9-a81f-ef47f80c76e8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6c7945ef-4ebd-42e9-a81f-ef47f80c76e8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6c7945ef-4ebd-42e9-a81f-ef47f80c76e8/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_6c7945ef-4ebd-42e9-a81f-ef47f80c76e8/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6c7945ef-4ebd-42e9-a81f-ef47f80c76e8/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 862be090098a4271d6e1a31a6f1302665ccfc795 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:00:27,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:00:27,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:00:27,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:00:27,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:00:27,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:00:27,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:00:27,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:00:27,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:00:27,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:00:27,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:00:27,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:00:27,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:00:27,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:00:27,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:00:27,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:00:27,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:00:27,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:00:27,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:00:27,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:00:27,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:00:27,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:00:27,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:00:27,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:00:27,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:00:27,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:00:27,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:00:27,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:00:27,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:00:27,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:00:27,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:00:27,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:00:27,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:00:27,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:00:27,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:00:27,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:00:27,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:00:27,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:00:27,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:00:27,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:00:27,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:00:27,615 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6c7945ef-4ebd-42e9-a81f-ef47f80c76e8/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 09:00:27,631 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:00:27,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:00:27,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:00:27,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:00:27,633 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:00:27,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:00:27,633 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:00:27,633 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:00:27,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:00:27,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:00:27,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:00:27,634 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 09:00:27,634 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 09:00:27,634 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 09:00:27,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:00:27,634 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:00:27,639 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:00:27,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:00:27,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:00:27,639 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:00:27,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:00:27,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:00:27,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:00:27,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:00:27,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:00:27,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:00:27,640 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/working_dir_6c7945ef-4ebd-42e9-a81f-ef47f80c76e8/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 -> 862be090098a4271d6e1a31a6f1302665ccfc795 [2019-10-22 09:00:27,675 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:00:27,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:00:27,687 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:00:27,689 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:00:27,689 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:00:27,689 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6c7945ef-4ebd-42e9-a81f-ef47f80c76e8/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i [2019-10-22 09:00:27,734 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6c7945ef-4ebd-42e9-a81f-ef47f80c76e8/bin/uautomizer/data/21f7c4921/9c01c52f334c40afb701047348efcfa9/FLAG6130b7863 [2019-10-22 09:00:28,159 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:00:28,160 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6c7945ef-4ebd-42e9-a81f-ef47f80c76e8/sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i [2019-10-22 09:00:28,172 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6c7945ef-4ebd-42e9-a81f-ef47f80c76e8/bin/uautomizer/data/21f7c4921/9c01c52f334c40afb701047348efcfa9/FLAG6130b7863 [2019-10-22 09:00:28,525 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6c7945ef-4ebd-42e9-a81f-ef47f80c76e8/bin/uautomizer/data/21f7c4921/9c01c52f334c40afb701047348efcfa9 [2019-10-22 09:00:28,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:00:28,528 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 09:00:28,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:28,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:00:28,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:00:28,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:28" (1/1) ... [2019-10-22 09:00:28,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b10e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:28, skipping insertion in model container [2019-10-22 09:00:28,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:28" (1/1) ... [2019-10-22 09:00:28,543 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:00:28,582 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:00:28,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:28,885 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:00:28,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:28,987 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:00:28,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:28 WrapperNode [2019-10-22 09:00:28,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:28,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:00:28,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:00:28,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:00:29,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:28" (1/1) ... [2019-10-22 09:00:29,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:28" (1/1) ... [2019-10-22 09:00:29,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:28" (1/1) ... [2019-10-22 09:00:29,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:28" (1/1) ... [2019-10-22 09:00:29,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:28" (1/1) ... [2019-10-22 09:00:29,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:28" (1/1) ... [2019-10-22 09:00:29,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:28" (1/1) ... [2019-10-22 09:00:29,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:00:29,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:00:29,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:00:29,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:00:29,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c7945ef-4ebd-42e9-a81f-ef47f80c76e8/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 [2019-10-22 09:00:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 09:00:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:00:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-22 09:00:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-22 09:00:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-22 09:00:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-22 09:00:29,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-22 09:00:29,108 INFO L138 BoogieDeclarations]: Found implementation of procedure sort [2019-10-22 09:00:29,108 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 09:00:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-22 09:00:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-22 09:00:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-22 09:00:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-22 09:00:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-22 09:00:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-22 09:00:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-22 09:00:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-22 09:00:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-22 09:00:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-22 09:00:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-22 09:00:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-22 09:00:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-22 09:00:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-22 09:00:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-22 09:00:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-22 09:00:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-22 09:00:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-22 09:00:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-22 09:00:29,113 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-22 09:00:29,113 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-22 09:00:29,113 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-22 09:00:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-22 09:00:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-22 09:00:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-22 09:00:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-22 09:00:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-22 09:00:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-22 09:00:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-22 09:00:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-22 09:00:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-22 09:00:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-22 09:00:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-22 09:00:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-22 09:00:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-22 09:00:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-22 09:00:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-22 09:00:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-22 09:00:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-22 09:00:29,118 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-22 09:00:29,118 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-22 09:00:29,118 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-22 09:00:29,118 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-22 09:00:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-22 09:00:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-22 09:00:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-22 09:00:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-22 09:00:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-22 09:00:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-22 09:00:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-22 09:00:29,120 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-22 09:00:29,120 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-22 09:00:29,120 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-22 09:00:29,120 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-22 09:00:29,120 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-22 09:00:29,121 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-22 09:00:29,121 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-22 09:00:29,121 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-22 09:00:29,121 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-22 09:00:29,121 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-22 09:00:29,121 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-22 09:00:29,121 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-22 09:00:29,122 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-22 09:00:29,122 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-22 09:00:29,122 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-22 09:00:29,122 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-22 09:00:29,122 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-22 09:00:29,122 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-22 09:00:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-22 09:00:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-22 09:00:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-22 09:00:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-22 09:00:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-22 09:00:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-22 09:00:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-22 09:00:29,124 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-22 09:00:29,124 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-22 09:00:29,126 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-22 09:00:29,127 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-22 09:00:29,127 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-22 09:00:29,127 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-22 09:00:29,127 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-22 09:00:29,127 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-22 09:00:29,127 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-22 09:00:29,128 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-22 09:00:29,128 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-22 09:00:29,128 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-22 09:00:29,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-22 09:00:29,128 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-22 09:00:29,128 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-22 09:00:29,128 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-22 09:00:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-22 09:00:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-22 09:00:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-22 09:00:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-22 09:00:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-22 09:00:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-22 09:00:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-22 09:00:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-22 09:00:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-22 09:00:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-22 09:00:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-22 09:00:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-22 09:00:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-22 09:00:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-22 09:00:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-22 09:00:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-22 09:00:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-22 09:00:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure sort [2019-10-22 09:00:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 09:00:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 09:00:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 09:00:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 09:00:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 09:00:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 09:00:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:00:29,620 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:00:29,621 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-22 09:00:29,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:29 BoogieIcfgContainer [2019-10-22 09:00:29,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:00:29,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:00:29,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:00:29,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:00:29,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:00:28" (1/3) ... [2019-10-22 09:00:29,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31fe2508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:00:29, skipping insertion in model container [2019-10-22 09:00:29,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:28" (2/3) ... [2019-10-22 09:00:29,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31fe2508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:00:29, skipping insertion in model container [2019-10-22 09:00:29,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:29" (3/3) ... [2019-10-22 09:00:29,628 INFO L109 eAbstractionObserver]: Analyzing ICFG java_BubbleSort-alloca-1.i [2019-10-22 09:00:29,636 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:00:29,644 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2019-10-22 09:00:29,653 INFO L249 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2019-10-22 09:00:29,669 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:00:29,669 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 09:00:29,670 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:00:29,670 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:00:29,670 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:00:29,670 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:00:29,670 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:00:29,670 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:00:29,683 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2019-10-22 09:00:29,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 09:00:29,691 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:29,691 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:29,693 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sortErr0REQUIRES_VIOLATION, sortErr11REQUIRES_VIOLATION, sortErr5REQUIRES_VIOLATION, sortErr10REQUIRES_VIOLATION, sortErr7REQUIRES_VIOLATION, sortErr1REQUIRES_VIOLATION, sortErr6REQUIRES_VIOLATION, sortErr3REQUIRES_VIOLATION, sortErr8REQUIRES_VIOLATION, sortErr2REQUIRES_VIOLATION, sortErr4REQUIRES_VIOLATION, sortErr9REQUIRES_VIOLATION]=== [2019-10-22 09:00:29,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:29,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1981262773, now seen corresponding path program 1 times [2019-10-22 09:00:29,705 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:29,705 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973561776] [2019-10-22 09:00:29,705 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:29,706 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:29,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:29,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:29,910 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973561776] [2019-10-22 09:00:29,911 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:29,911 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:00:29,911 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052377739] [2019-10-22 09:00:29,917 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:00:29,917 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:29,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:00:29,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:00:29,932 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 4 states. [2019-10-22 09:00:30,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:30,151 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2019-10-22 09:00:30,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:00:30,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-10-22 09:00:30,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:30,163 INFO L225 Difference]: With dead ends: 48 [2019-10-22 09:00:30,163 INFO L226 Difference]: Without dead ends: 45 [2019-10-22 09:00:30,169 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:00:30,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-22 09:00:30,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-10-22 09:00:30,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-22 09:00:30,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2019-10-22 09:00:30,203 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 10 [2019-10-22 09:00:30,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:30,203 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2019-10-22 09:00:30,203 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:00:30,204 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2019-10-22 09:00:30,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 09:00:30,204 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:30,204 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:30,205 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sortErr0REQUIRES_VIOLATION, sortErr11REQUIRES_VIOLATION, sortErr5REQUIRES_VIOLATION, sortErr10REQUIRES_VIOLATION, sortErr7REQUIRES_VIOLATION, sortErr1REQUIRES_VIOLATION, sortErr6REQUIRES_VIOLATION, sortErr3REQUIRES_VIOLATION, sortErr8REQUIRES_VIOLATION, sortErr2REQUIRES_VIOLATION, sortErr4REQUIRES_VIOLATION, sortErr9REQUIRES_VIOLATION]=== [2019-10-22 09:00:30,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:30,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1981262772, now seen corresponding path program 1 times [2019-10-22 09:00:30,205 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:30,205 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416479333] [2019-10-22 09:00:30,205 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:30,206 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:30,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:30,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:30,339 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416479333] [2019-10-22 09:00:30,340 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:30,340 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:00:30,340 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745165548] [2019-10-22 09:00:30,341 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:00:30,342 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:30,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:00:30,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:30,342 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 6 states. [2019-10-22 09:00:30,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:30,637 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2019-10-22 09:00:30,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:00:30,638 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-10-22 09:00:30,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:30,639 INFO L225 Difference]: With dead ends: 49 [2019-10-22 09:00:30,639 INFO L226 Difference]: Without dead ends: 49 [2019-10-22 09:00:30,640 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:00:30,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-10-22 09:00:30,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2019-10-22 09:00:30,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-22 09:00:30,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2019-10-22 09:00:30,645 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 10 [2019-10-22 09:00:30,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:30,646 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2019-10-22 09:00:30,646 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:00:30,646 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2019-10-22 09:00:30,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 09:00:30,646 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:30,647 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:30,647 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sortErr0REQUIRES_VIOLATION, sortErr11REQUIRES_VIOLATION, sortErr5REQUIRES_VIOLATION, sortErr10REQUIRES_VIOLATION, sortErr7REQUIRES_VIOLATION, sortErr1REQUIRES_VIOLATION, sortErr6REQUIRES_VIOLATION, sortErr3REQUIRES_VIOLATION, sortErr8REQUIRES_VIOLATION, sortErr2REQUIRES_VIOLATION, sortErr4REQUIRES_VIOLATION, sortErr9REQUIRES_VIOLATION]=== [2019-10-22 09:00:30,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:30,647 INFO L82 PathProgramCache]: Analyzing trace with hash -104999665, now seen corresponding path program 1 times [2019-10-22 09:00:30,647 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:30,648 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959148023] [2019-10-22 09:00:30,648 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:30,648 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:30,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:30,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:30,753 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959148023] [2019-10-22 09:00:30,753 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342577447] [2019-10-22 09:00:30,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c7945ef-4ebd-42e9-a81f-ef47f80c76e8/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 [2019-10-22 09:00:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:30,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:30,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:30,905 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 09:00:30,905 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2019-10-22 09:00:30,905 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261130017] [2019-10-22 09:00:30,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:00:30,906 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:30,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:00:30,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:00:30,907 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 5 states. [2019-10-22 09:00:30,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:30,947 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2019-10-22 09:00:30,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:00:30,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-10-22 09:00:30,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:30,951 INFO L225 Difference]: With dead ends: 57 [2019-10-22 09:00:30,952 INFO L226 Difference]: Without dead ends: 57 [2019-10-22 09:00:30,954 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:00:30,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-22 09:00:30,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2019-10-22 09:00:30,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-10-22 09:00:30,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2019-10-22 09:00:30,966 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 14 [2019-10-22 09:00:30,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:30,966 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2019-10-22 09:00:30,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:00:30,966 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2019-10-22 09:00:30,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 09:00:30,967 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:30,967 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:31,173 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:31,174 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sortErr0REQUIRES_VIOLATION, sortErr11REQUIRES_VIOLATION, sortErr5REQUIRES_VIOLATION, sortErr10REQUIRES_VIOLATION, sortErr7REQUIRES_VIOLATION, sortErr1REQUIRES_VIOLATION, sortErr6REQUIRES_VIOLATION, sortErr3REQUIRES_VIOLATION, sortErr8REQUIRES_VIOLATION, sortErr2REQUIRES_VIOLATION, sortErr4REQUIRES_VIOLATION, sortErr9REQUIRES_VIOLATION]=== [2019-10-22 09:00:31,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:31,174 INFO L82 PathProgramCache]: Analyzing trace with hash -914346291, now seen corresponding path program 1 times [2019-10-22 09:00:31,174 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:31,174 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789587411] [2019-10-22 09:00:31,175 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:31,175 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:31,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:31,318 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789587411] [2019-10-22 09:00:31,318 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814629342] [2019-10-22 09:00:31,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c7945ef-4ebd-42e9-a81f-ef47f80c76e8/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 [2019-10-22 09:00:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-22 09:00:31,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:31,485 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 0 case distinctions, treesize of input 8 treesize of output 7 [2019-10-22 09:00:31,486 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 09:00:31,494 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:00:31,495 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 09:00:31,495 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2019-10-22 09:00:31,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:31,552 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:00:31,552 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2019-10-22 09:00:31,552 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587061024] [2019-10-22 09:00:31,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:00:31,553 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:31,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:00:31,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:00:31,554 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 8 states. [2019-10-22 09:00:31,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:31,772 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2019-10-22 09:00:31,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:00:31,772 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-10-22 09:00:31,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:31,773 INFO L225 Difference]: With dead ends: 54 [2019-10-22 09:00:31,773 INFO L226 Difference]: Without dead ends: 54 [2019-10-22 09:00:31,773 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:00:31,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-10-22 09:00:31,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2019-10-22 09:00:31,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-10-22 09:00:31,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2019-10-22 09:00:31,779 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 14 [2019-10-22 09:00:31,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:31,779 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2019-10-22 09:00:31,779 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:00:31,779 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2019-10-22 09:00:31,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 09:00:31,780 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:31,780 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:31,980 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:31,981 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sortErr0REQUIRES_VIOLATION, sortErr11REQUIRES_VIOLATION, sortErr5REQUIRES_VIOLATION, sortErr10REQUIRES_VIOLATION, sortErr7REQUIRES_VIOLATION, sortErr1REQUIRES_VIOLATION, sortErr6REQUIRES_VIOLATION, sortErr3REQUIRES_VIOLATION, sortErr8REQUIRES_VIOLATION, sortErr2REQUIRES_VIOLATION, sortErr4REQUIRES_VIOLATION, sortErr9REQUIRES_VIOLATION]=== [2019-10-22 09:00:31,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:31,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1910443295, now seen corresponding path program 1 times [2019-10-22 09:00:31,981 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:31,981 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649879330] [2019-10-22 09:00:31,982 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:31,982 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:31,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:32,088 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649879330] [2019-10-22 09:00:32,088 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:32,089 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:00:32,089 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040362810] [2019-10-22 09:00:32,089 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:00:32,089 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:32,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:00:32,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:32,099 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 6 states. [2019-10-22 09:00:32,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:32,226 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2019-10-22 09:00:32,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:00:32,226 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-10-22 09:00:32,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:32,227 INFO L225 Difference]: With dead ends: 45 [2019-10-22 09:00:32,227 INFO L226 Difference]: Without dead ends: 45 [2019-10-22 09:00:32,227 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:00:32,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-22 09:00:32,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-10-22 09:00:32,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-22 09:00:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2019-10-22 09:00:32,232 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 18 [2019-10-22 09:00:32,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:32,233 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2019-10-22 09:00:32,233 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:00:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2019-10-22 09:00:32,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 09:00:32,233 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:32,234 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:32,234 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sortErr0REQUIRES_VIOLATION, sortErr11REQUIRES_VIOLATION, sortErr5REQUIRES_VIOLATION, sortErr10REQUIRES_VIOLATION, sortErr7REQUIRES_VIOLATION, sortErr1REQUIRES_VIOLATION, sortErr6REQUIRES_VIOLATION, sortErr3REQUIRES_VIOLATION, sortErr8REQUIRES_VIOLATION, sortErr2REQUIRES_VIOLATION, sortErr4REQUIRES_VIOLATION, sortErr9REQUIRES_VIOLATION]=== [2019-10-22 09:00:32,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:32,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1910443294, now seen corresponding path program 1 times [2019-10-22 09:00:32,234 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:32,234 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311754875] [2019-10-22 09:00:32,235 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:32,235 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:32,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 09:00:32,292 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311754875] [2019-10-22 09:00:32,292 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:32,292 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 09:00:32,292 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363176714] [2019-10-22 09:00:32,293 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:00:32,293 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:32,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:00:32,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:32,293 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 6 states. [2019-10-22 09:00:32,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:32,461 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2019-10-22 09:00:32,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:00:32,462 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-10-22 09:00:32,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:32,462 INFO L225 Difference]: With dead ends: 53 [2019-10-22 09:00:32,462 INFO L226 Difference]: Without dead ends: 53 [2019-10-22 09:00:32,463 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:00:32,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-10-22 09:00:32,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2019-10-22 09:00:32,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-22 09:00:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2019-10-22 09:00:32,467 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 18 [2019-10-22 09:00:32,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:32,467 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2019-10-22 09:00:32,467 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:00:32,468 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2019-10-22 09:00:32,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 09:00:32,471 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:32,471 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:32,471 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sortErr0REQUIRES_VIOLATION, sortErr11REQUIRES_VIOLATION, sortErr5REQUIRES_VIOLATION, sortErr10REQUIRES_VIOLATION, sortErr7REQUIRES_VIOLATION, sortErr1REQUIRES_VIOLATION, sortErr6REQUIRES_VIOLATION, sortErr3REQUIRES_VIOLATION, sortErr8REQUIRES_VIOLATION, sortErr2REQUIRES_VIOLATION, sortErr4REQUIRES_VIOLATION, sortErr9REQUIRES_VIOLATION]=== [2019-10-22 09:00:32,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:32,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1652277856, now seen corresponding path program 1 times [2019-10-22 09:00:32,472 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:32,472 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628291982] [2019-10-22 09:00:32,472 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:32,472 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:32,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 09:00:32,609 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628291982] [2019-10-22 09:00:32,609 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:32,609 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:00:32,610 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097798638] [2019-10-22 09:00:32,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:00:32,610 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:32,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:00:32,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:00:32,611 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 8 states. [2019-10-22 09:00:32,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:32,811 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2019-10-22 09:00:32,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 09:00:32,812 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-10-22 09:00:32,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:32,814 INFO L225 Difference]: With dead ends: 68 [2019-10-22 09:00:32,814 INFO L226 Difference]: Without dead ends: 68 [2019-10-22 09:00:32,815 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2019-10-22 09:00:32,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-10-22 09:00:32,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2019-10-22 09:00:32,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-10-22 09:00:32,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2019-10-22 09:00:32,820 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 18 [2019-10-22 09:00:32,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:32,820 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2019-10-22 09:00:32,821 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:00:32,821 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2019-10-22 09:00:32,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 09:00:32,821 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:32,821 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:32,822 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sortErr0REQUIRES_VIOLATION, sortErr11REQUIRES_VIOLATION, sortErr5REQUIRES_VIOLATION, sortErr10REQUIRES_VIOLATION, sortErr7REQUIRES_VIOLATION, sortErr1REQUIRES_VIOLATION, sortErr6REQUIRES_VIOLATION, sortErr3REQUIRES_VIOLATION, sortErr8REQUIRES_VIOLATION, sortErr2REQUIRES_VIOLATION, sortErr4REQUIRES_VIOLATION, sortErr9REQUIRES_VIOLATION]=== [2019-10-22 09:00:32,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:32,822 INFO L82 PathProgramCache]: Analyzing trace with hash 318994013, now seen corresponding path program 1 times [2019-10-22 09:00:32,822 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:32,822 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979207024] [2019-10-22 09:00:32,822 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:32,823 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:32,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:32,893 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979207024] [2019-10-22 09:00:32,893 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655233994] [2019-10-22 09:00:32,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c7945ef-4ebd-42e9-a81f-ef47f80c76e8/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 [2019-10-22 09:00:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:00:32,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:33,005 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:00:33,005 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2019-10-22 09:00:33,005 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185778228] [2019-10-22 09:00:33,005 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 09:00:33,005 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:33,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 09:00:33,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:00:33,006 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 10 states. [2019-10-22 09:00:33,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:33,237 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2019-10-22 09:00:33,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 09:00:33,237 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-10-22 09:00:33,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:33,238 INFO L225 Difference]: With dead ends: 73 [2019-10-22 09:00:33,238 INFO L226 Difference]: Without dead ends: 73 [2019-10-22 09:00:33,238 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2019-10-22 09:00:33,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-10-22 09:00:33,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 62. [2019-10-22 09:00:33,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-10-22 09:00:33,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2019-10-22 09:00:33,243 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 19 [2019-10-22 09:00:33,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:33,244 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2019-10-22 09:00:33,244 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 09:00:33,244 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2019-10-22 09:00:33,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-22 09:00:33,245 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:33,245 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] [2019-10-22 09:00:33,445 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:33,447 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sortErr0REQUIRES_VIOLATION, sortErr11REQUIRES_VIOLATION, sortErr5REQUIRES_VIOLATION, sortErr10REQUIRES_VIOLATION, sortErr7REQUIRES_VIOLATION, sortErr1REQUIRES_VIOLATION, sortErr6REQUIRES_VIOLATION, sortErr3REQUIRES_VIOLATION, sortErr8REQUIRES_VIOLATION, sortErr2REQUIRES_VIOLATION, sortErr4REQUIRES_VIOLATION, sortErr9REQUIRES_VIOLATION]=== [2019-10-22 09:00:33,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:33,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1985734008, now seen corresponding path program 1 times [2019-10-22 09:00:33,447 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:33,447 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845375884] [2019-10-22 09:00:33,447 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:33,447 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:33,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:33,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 09:00:33,511 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845375884] [2019-10-22 09:00:33,511 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:33,511 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:00:33,511 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267177413] [2019-10-22 09:00:33,511 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:00:33,511 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:33,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:00:33,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:33,512 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand 6 states. [2019-10-22 09:00:33,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:33,611 INFO L93 Difference]: Finished difference Result 87 states and 103 transitions. [2019-10-22 09:00:33,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:00:33,611 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-10-22 09:00:33,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:33,613 INFO L225 Difference]: With dead ends: 87 [2019-10-22 09:00:33,613 INFO L226 Difference]: Without dead ends: 70 [2019-10-22 09:00:33,614 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:00:33,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-10-22 09:00:33,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 46. [2019-10-22 09:00:33,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-22 09:00:33,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2019-10-22 09:00:33,619 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 20 [2019-10-22 09:00:33,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:33,619 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2019-10-22 09:00:33,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:00:33,620 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2019-10-22 09:00:33,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 09:00:33,620 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:33,621 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:33,621 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sortErr0REQUIRES_VIOLATION, sortErr11REQUIRES_VIOLATION, sortErr5REQUIRES_VIOLATION, sortErr10REQUIRES_VIOLATION, sortErr7REQUIRES_VIOLATION, sortErr1REQUIRES_VIOLATION, sortErr6REQUIRES_VIOLATION, sortErr3REQUIRES_VIOLATION, sortErr8REQUIRES_VIOLATION, sortErr2REQUIRES_VIOLATION, sortErr4REQUIRES_VIOLATION, sortErr9REQUIRES_VIOLATION]=== [2019-10-22 09:00:33,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:33,621 INFO L82 PathProgramCache]: Analyzing trace with hash 865914874, now seen corresponding path program 2 times [2019-10-22 09:00:33,621 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:33,622 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044070730] [2019-10-22 09:00:33,622 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:33,622 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:33,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:33,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-22 09:00:33,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044070730] [2019-10-22 09:00:33,718 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:33,718 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:00:33,719 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876539065] [2019-10-22 09:00:33,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:00:33,719 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:33,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:00:33,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:00:33,720 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 8 states. [2019-10-22 09:00:33,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:33,988 INFO L93 Difference]: Finished difference Result 82 states and 95 transitions. [2019-10-22 09:00:33,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 09:00:33,988 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2019-10-22 09:00:33,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:33,992 INFO L225 Difference]: With dead ends: 82 [2019-10-22 09:00:33,992 INFO L226 Difference]: Without dead ends: 82 [2019-10-22 09:00:33,993 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-10-22 09:00:33,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-10-22 09:00:33,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 72. [2019-10-22 09:00:33,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-10-22 09:00:33,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2019-10-22 09:00:33,999 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 23 [2019-10-22 09:00:33,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:33,999 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2019-10-22 09:00:33,999 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:00:33,999 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2019-10-22 09:00:34,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 09:00:34,000 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:34,000 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:34,001 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sortErr0REQUIRES_VIOLATION, sortErr11REQUIRES_VIOLATION, sortErr5REQUIRES_VIOLATION, sortErr10REQUIRES_VIOLATION, sortErr7REQUIRES_VIOLATION, sortErr1REQUIRES_VIOLATION, sortErr6REQUIRES_VIOLATION, sortErr3REQUIRES_VIOLATION, sortErr8REQUIRES_VIOLATION, sortErr2REQUIRES_VIOLATION, sortErr4REQUIRES_VIOLATION, sortErr9REQUIRES_VIOLATION]=== [2019-10-22 09:00:34,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:34,001 INFO L82 PathProgramCache]: Analyzing trace with hash 2020129757, now seen corresponding path program 1 times [2019-10-22 09:00:34,001 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:34,001 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064757040] [2019-10-22 09:00:34,001 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:34,002 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:34,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:34,082 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-22 09:00:34,082 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064757040] [2019-10-22 09:00:34,082 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:34,082 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:00:34,083 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478139384] [2019-10-22 09:00:34,083 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:00:34,083 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:34,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:00:34,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:34,084 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand 6 states. [2019-10-22 09:00:34,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:34,234 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions. [2019-10-22 09:00:34,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:00:34,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2019-10-22 09:00:34,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:34,235 INFO L225 Difference]: With dead ends: 82 [2019-10-22 09:00:34,235 INFO L226 Difference]: Without dead ends: 82 [2019-10-22 09:00:34,235 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:00:34,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-10-22 09:00:34,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 51. [2019-10-22 09:00:34,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-10-22 09:00:34,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2019-10-22 09:00:34,241 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 27 [2019-10-22 09:00:34,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:34,241 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2019-10-22 09:00:34,241 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:00:34,242 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2019-10-22 09:00:34,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 09:00:34,242 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:34,242 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:34,243 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sortErr0REQUIRES_VIOLATION, sortErr11REQUIRES_VIOLATION, sortErr5REQUIRES_VIOLATION, sortErr10REQUIRES_VIOLATION, sortErr7REQUIRES_VIOLATION, sortErr1REQUIRES_VIOLATION, sortErr6REQUIRES_VIOLATION, sortErr3REQUIRES_VIOLATION, sortErr8REQUIRES_VIOLATION, sortErr2REQUIRES_VIOLATION, sortErr4REQUIRES_VIOLATION, sortErr9REQUIRES_VIOLATION]=== [2019-10-22 09:00:34,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:34,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1663654412, now seen corresponding path program 1 times [2019-10-22 09:00:34,243 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:34,243 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578885472] [2019-10-22 09:00:34,243 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:34,244 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:34,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:34,394 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:34,394 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578885472] [2019-10-22 09:00:34,395 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063249790] [2019-10-22 09:00:34,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c7945ef-4ebd-42e9-a81f-ef47f80c76e8/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 [2019-10-22 09:00:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:34,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 09:00:34,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:34,590 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 09:00:34,590 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:00:34,590 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2019-10-22 09:00:34,591 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686310088] [2019-10-22 09:00:34,591 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-22 09:00:34,591 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:34,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-22 09:00:34,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2019-10-22 09:00:34,592 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 18 states. [2019-10-22 09:00:35,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:35,240 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2019-10-22 09:00:35,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-22 09:00:35,241 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 31 [2019-10-22 09:00:35,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:35,241 INFO L225 Difference]: With dead ends: 81 [2019-10-22 09:00:35,241 INFO L226 Difference]: Without dead ends: 64 [2019-10-22 09:00:35,242 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2019-10-22 09:00:35,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-10-22 09:00:35,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 50. [2019-10-22 09:00:35,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-22 09:00:35,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2019-10-22 09:00:35,245 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 31 [2019-10-22 09:00:35,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:35,245 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2019-10-22 09:00:35,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-22 09:00:35,246 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2019-10-22 09:00:35,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-22 09:00:35,246 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:35,246 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:35,447 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:35,448 INFO L410 AbstractCegarLoop]: === Iteration 13 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, sortErr0REQUIRES_VIOLATION, sortErr11REQUIRES_VIOLATION, sortErr5REQUIRES_VIOLATION, sortErr10REQUIRES_VIOLATION, sortErr7REQUIRES_VIOLATION, sortErr1REQUIRES_VIOLATION, sortErr6REQUIRES_VIOLATION, sortErr3REQUIRES_VIOLATION, sortErr8REQUIRES_VIOLATION, sortErr2REQUIRES_VIOLATION, sortErr4REQUIRES_VIOLATION, sortErr9REQUIRES_VIOLATION]=== [2019-10-22 09:00:35,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:35,448 INFO L82 PathProgramCache]: Analyzing trace with hash 816479941, now seen corresponding path program 2 times [2019-10-22 09:00:35,448 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:35,448 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45177812] [2019-10-22 09:00:35,448 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:35,448 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:35,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:35,530 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-22 09:00:35,532 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45177812] [2019-10-22 09:00:35,532 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687939554] [2019-10-22 09:00:35,533 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c7945ef-4ebd-42e9-a81f-ef47f80c76e8/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 [2019-10-22 09:00:35,612 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 09:00:35,612 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:00:35,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 09:00:35,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:35,683 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-22 09:00:35,684 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:00:35,684 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 12 [2019-10-22 09:00:35,684 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105315286] [2019-10-22 09:00:35,685 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-22 09:00:35,685 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:35,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-22 09:00:35,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-10-22 09:00:35,685 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 13 states. [2019-10-22 09:00:36,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:36,063 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2019-10-22 09:00:36,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-22 09:00:36,063 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2019-10-22 09:00:36,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:36,064 INFO L225 Difference]: With dead ends: 66 [2019-10-22 09:00:36,064 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 09:00:36,064 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2019-10-22 09:00:36,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 09:00:36,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 09:00:36,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 09:00:36,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:00:36,068 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2019-10-22 09:00:36,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:36,068 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:36,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-22 09:00:36,068 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:00:36,068 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 09:00:36,269 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:36,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:00:36 BoogieIcfgContainer [2019-10-22 09:00:36,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:00:36,273 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:00:36,273 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:00:36,273 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:00:36,274 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:29" (3/4) ... [2019-10-22 09:00:36,278 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 09:00:36,284 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-10-22 09:00:36,285 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-10-22 09:00:36,285 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-10-22 09:00:36,285 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-10-22 09:00:36,285 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-10-22 09:00:36,285 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-10-22 09:00:36,285 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure sort [2019-10-22 09:00:36,285 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-10-22 09:00:36,289 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-10-22 09:00:36,290 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-10-22 09:00:36,290 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-10-22 09:00:36,350 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6c7945ef-4ebd-42e9-a81f-ef47f80c76e8/bin/uautomizer/witness.graphml [2019-10-22 09:00:36,350 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:00:36,355 INFO L168 Benchmark]: Toolchain (without parser) took 7824.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.1 MB). Free memory was 939.3 MB in the beginning and 1.2 GB in the end (delta: -224.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:36,355 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:36,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 459.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -186.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:36,356 INFO L168 Benchmark]: Boogie Preprocessor took 49.75 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:36,356 INFO L168 Benchmark]: RCFGBuilder took 583.16 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: 49.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:36,357 INFO L168 Benchmark]: TraceAbstraction took 6650.08 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 54.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -101.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:36,357 INFO L168 Benchmark]: Witness Printer took 77.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:36,359 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 459.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -186.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.75 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 583.16 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: 49.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6650.08 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 54.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -101.0 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 77.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 521]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 15 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 64 locations, 15 error locations. Result: SAFE, OverallTime: 6.6s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 353 SDtfs, 1165 SDslu, 496 SDs, 0 SdLazy, 1692 SolverSat, 141 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 266 GetRequests, 127 SyntacticMatches, 6 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 112 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 370 NumberOfCodeBlocks, 370 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 352 ConstructedInterpolants, 0 QuantifiedInterpolants, 37328 SizeOfPredicates, 15 NumberOfNonLiveVariables, 460 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 18 InterpolantComputations, 9 PerfectInterpolantSequences, 69/94 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...