./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/derefAfterFree2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_96702ace-138e-4055-9c49-0482646d4d8e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_96702ace-138e-4055-9c49-0482646d4d8e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_96702ace-138e-4055-9c49-0482646d4d8e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_96702ace-138e-4055-9c49-0482646d4d8e/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/derefAfterFree2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_96702ace-138e-4055-9c49-0482646d4d8e/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_96702ace-138e-4055-9c49-0482646d4d8e/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 44834c55142a76240cb3980fc2bb6f5aeaa27c83 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:58:22,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:58:22,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:58:22,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:58:22,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:58:22,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:58:22,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:58:22,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:58:22,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:58:22,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:58:22,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:58:22,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:58:22,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:58:22,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:58:22,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:58:22,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:58:22,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:58:22,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:58:22,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:58:22,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:58:22,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:58:22,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:58:22,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:58:22,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:58:22,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:58:22,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:58:22,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:58:22,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:58:22,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:58:22,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:58:22,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:58:22,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:58:22,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:58:22,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:58:22,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:58:22,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:58:22,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:58:22,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:58:22,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:58:22,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:58:22,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:58:22,927 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_96702ace-138e-4055-9c49-0482646d4d8e/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 08:58:22,936 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:58:22,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:58:22,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:58:22,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:58:22,938 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:58:22,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:58:22,938 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:58:22,938 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:58:22,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:58:22,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:58:22,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:58:22,939 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 08:58:22,939 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 08:58:22,939 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 08:58:22,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:58:22,939 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:58:22,940 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:58:22,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:58:22,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:58:22,940 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:58:22,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:58:22,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:58:22,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:58:22,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:58:22,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:58:22,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:58:22,941 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_96702ace-138e-4055-9c49-0482646d4d8e/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 -> 44834c55142a76240cb3980fc2bb6f5aeaa27c83 [2019-10-22 08:58:22,974 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:58:22,991 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:58:22,996 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:58:22,999 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:58:22,999 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:58:23,000 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_96702ace-138e-4055-9c49-0482646d4d8e/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext3/derefAfterFree2.c [2019-10-22 08:58:23,054 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_96702ace-138e-4055-9c49-0482646d4d8e/bin/uautomizer/data/926022889/07d2a50a159c474ea4930d572098c217/FLAG2ce4039bf [2019-10-22 08:58:23,445 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:58:23,445 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_96702ace-138e-4055-9c49-0482646d4d8e/sv-benchmarks/c/memsafety-ext3/derefAfterFree2.c [2019-10-22 08:58:23,451 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_96702ace-138e-4055-9c49-0482646d4d8e/bin/uautomizer/data/926022889/07d2a50a159c474ea4930d572098c217/FLAG2ce4039bf [2019-10-22 08:58:23,463 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_96702ace-138e-4055-9c49-0482646d4d8e/bin/uautomizer/data/926022889/07d2a50a159c474ea4930d572098c217 [2019-10-22 08:58:23,466 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:58:23,467 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 08:58:23,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:23,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:58:23,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:58:23,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:23" (1/1) ... [2019-10-22 08:58:23,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c50c72c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:23, skipping insertion in model container [2019-10-22 08:58:23,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:23" (1/1) ... [2019-10-22 08:58:23,486 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:58:23,500 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:58:23,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:23,684 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:58:23,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:23,767 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:58:23,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:23 WrapperNode [2019-10-22 08:58:23,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:23,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:58:23,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:58:23,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:58:23,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:23" (1/1) ... [2019-10-22 08:58:23,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:23" (1/1) ... [2019-10-22 08:58:23,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:23" (1/1) ... [2019-10-22 08:58:23,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:23" (1/1) ... [2019-10-22 08:58:23,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:23" (1/1) ... [2019-10-22 08:58:23,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:23" (1/1) ... [2019-10-22 08:58:23,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:23" (1/1) ... [2019-10-22 08:58:23,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:58:23,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:58:23,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:58:23,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:58:23,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_96702ace-138e-4055-9c49-0482646d4d8e/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 08:58:23,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 08:58:23,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:58:23,870 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 08:58:23,870 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-22 08:58:23,870 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-22 08:58:23,870 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 08:58:23,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 08:58:23,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:58:23,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:58:23,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 08:58:23,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:58:23,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:58:24,042 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:58:24,042 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-22 08:58:24,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:24 BoogieIcfgContainer [2019-10-22 08:58:24,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:58:24,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:58:24,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:58:24,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:58:24,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:58:23" (1/3) ... [2019-10-22 08:58:24,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25468c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:58:24, skipping insertion in model container [2019-10-22 08:58:24,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:23" (2/3) ... [2019-10-22 08:58:24,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25468c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:58:24, skipping insertion in model container [2019-10-22 08:58:24,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:24" (3/3) ... [2019-10-22 08:58:24,050 INFO L109 eAbstractionObserver]: Analyzing ICFG derefAfterFree2.c [2019-10-22 08:58:24,060 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:58:24,066 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-10-22 08:58:24,076 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-10-22 08:58:24,094 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:58:24,094 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 08:58:24,094 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:58:24,094 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:58:24,094 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:58:24,094 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:58:24,095 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:58:24,095 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:58:24,107 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-22 08:58:24,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 08:58:24,116 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:24,116 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:24,118 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 08:58:24,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:24,123 INFO L82 PathProgramCache]: Analyzing trace with hash 868112163, now seen corresponding path program 1 times [2019-10-22 08:58:24,130 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:24,131 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457393435] [2019-10-22 08:58:24,131 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:24,131 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:24,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,371 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 08:58:24,374 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457393435] [2019-10-22 08:58:24,375 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:24,375 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:58:24,375 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506934573] [2019-10-22 08:58:24,379 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:58:24,379 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:24,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:58:24,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:58:24,402 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2019-10-22 08:58:24,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:24,515 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-10-22 08:58:24,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:58:24,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-10-22 08:58:24,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:24,525 INFO L225 Difference]: With dead ends: 29 [2019-10-22 08:58:24,525 INFO L226 Difference]: Without dead ends: 26 [2019-10-22 08:58:24,527 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 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 08:58:24,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-22 08:58:24,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-10-22 08:58:24,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-22 08:58:24,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-10-22 08:58:24,557 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 8 [2019-10-22 08:58:24,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:24,557 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-10-22 08:58:24,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:58:24,557 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-10-22 08:58:24,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 08:58:24,558 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:24,558 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:24,559 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 08:58:24,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:24,559 INFO L82 PathProgramCache]: Analyzing trace with hash 868112162, now seen corresponding path program 1 times [2019-10-22 08:58:24,559 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:24,559 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363709493] [2019-10-22 08:58:24,560 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:24,560 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:24,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,601 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 08:58:24,601 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363709493] [2019-10-22 08:58:24,602 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:24,602 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:58:24,602 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467600386] [2019-10-22 08:58:24,603 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:58:24,604 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:24,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:58:24,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:58:24,604 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 4 states. [2019-10-22 08:58:24,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:24,647 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2019-10-22 08:58:24,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:58:24,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-10-22 08:58:24,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:24,648 INFO L225 Difference]: With dead ends: 30 [2019-10-22 08:58:24,648 INFO L226 Difference]: Without dead ends: 30 [2019-10-22 08:58:24,649 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 08:58:24,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-22 08:58:24,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2019-10-22 08:58:24,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-22 08:58:24,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-10-22 08:58:24,652 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 8 [2019-10-22 08:58:24,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:24,653 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-10-22 08:58:24,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:58:24,653 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-10-22 08:58:24,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 08:58:24,653 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:24,653 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:24,654 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 08:58:24,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:24,654 INFO L82 PathProgramCache]: Analyzing trace with hash -258436314, now seen corresponding path program 1 times [2019-10-22 08:58:24,654 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:24,654 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278587983] [2019-10-22 08:58:24,655 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:24,655 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:24,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,789 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 08:58:24,791 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278587983] [2019-10-22 08:58:24,792 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:24,792 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:58:24,792 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869627964] [2019-10-22 08:58:24,792 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:58:24,793 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:24,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:58:24,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:58:24,793 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 7 states. [2019-10-22 08:58:24,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:24,868 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-10-22 08:58:24,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:58:24,869 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-10-22 08:58:24,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:24,869 INFO L225 Difference]: With dead ends: 25 [2019-10-22 08:58:24,870 INFO L226 Difference]: Without dead ends: 25 [2019-10-22 08:58:24,870 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:58:24,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-22 08:58:24,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-10-22 08:58:24,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-22 08:58:24,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-10-22 08:58:24,874 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 12 [2019-10-22 08:58:24,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:24,875 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-10-22 08:58:24,875 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:58:24,875 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-10-22 08:58:24,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 08:58:24,877 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:24,878 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:24,878 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 08:58:24,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:24,878 INFO L82 PathProgramCache]: Analyzing trace with hash 578407498, now seen corresponding path program 1 times [2019-10-22 08:58:24,878 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:24,879 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62570125] [2019-10-22 08:58:24,879 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:24,879 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:24,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,948 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 08:58:24,948 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62570125] [2019-10-22 08:58:24,948 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360830541] [2019-10-22 08:58:24,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_96702ace-138e-4055-9c49-0482646d4d8e/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 08:58:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 08:58:24,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:25,014 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 08:58:25,014 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:25,015 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-10-22 08:58:25,015 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52094900] [2019-10-22 08:58:25,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:58:25,016 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:25,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:58:25,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:58:25,016 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 6 states. [2019-10-22 08:58:25,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:25,073 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2019-10-22 08:58:25,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:58:25,074 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-10-22 08:58:25,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:25,074 INFO L225 Difference]: With dead ends: 29 [2019-10-22 08:58:25,075 INFO L226 Difference]: Without dead ends: 29 [2019-10-22 08:58:25,075 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:58:25,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-22 08:58:25,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-10-22 08:58:25,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-22 08:58:25,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-10-22 08:58:25,078 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 13 [2019-10-22 08:58:25,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:25,079 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2019-10-22 08:58:25,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:58:25,079 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2019-10-22 08:58:25,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 08:58:25,079 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:25,081 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:25,282 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:25,282 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 08:58:25,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:25,283 INFO L82 PathProgramCache]: Analyzing trace with hash -977036761, now seen corresponding path program 2 times [2019-10-22 08:58:25,283 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:25,283 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123232538] [2019-10-22 08:58:25,283 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:25,283 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:25,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:25,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:25,345 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123232538] [2019-10-22 08:58:25,345 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321212294] [2019-10-22 08:58:25,345 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_96702ace-138e-4055-9c49-0482646d4d8e/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 08:58:25,374 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:58:25,374 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:25,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:58:25,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:25,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:25,393 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:25,393 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-10-22 08:58:25,393 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953135538] [2019-10-22 08:58:25,394 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:58:25,394 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:25,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:58:25,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:58:25,394 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 7 states. [2019-10-22 08:58:25,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:25,453 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2019-10-22 08:58:25,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:58:25,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-10-22 08:58:25,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:25,455 INFO L225 Difference]: With dead ends: 33 [2019-10-22 08:58:25,456 INFO L226 Difference]: Without dead ends: 33 [2019-10-22 08:58:25,456 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:58:25,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-22 08:58:25,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-10-22 08:58:25,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-22 08:58:25,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2019-10-22 08:58:25,458 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 17 [2019-10-22 08:58:25,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:25,458 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2019-10-22 08:58:25,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:58:25,458 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2019-10-22 08:58:25,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 08:58:25,459 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:25,459 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:25,659 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:25,660 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 08:58:25,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:25,660 INFO L82 PathProgramCache]: Analyzing trace with hash -242667132, now seen corresponding path program 3 times [2019-10-22 08:58:25,660 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:25,660 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140362972] [2019-10-22 08:58:25,661 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:25,661 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:25,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:25,751 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:25,752 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140362972] [2019-10-22 08:58:25,752 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820372144] [2019-10-22 08:58:25,752 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_96702ace-138e-4055-9c49-0482646d4d8e/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 08:58:25,784 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-10-22 08:58:25,784 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:25,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:58:25,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:25,804 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:25,804 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-10-22 08:58:25,804 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798497263] [2019-10-22 08:58:25,805 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:58:25,805 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:25,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:58:25,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:58:25,806 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 8 states. [2019-10-22 08:58:25,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:25,874 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2019-10-22 08:58:25,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:58:25,874 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2019-10-22 08:58:25,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:25,875 INFO L225 Difference]: With dead ends: 37 [2019-10-22 08:58:25,875 INFO L226 Difference]: Without dead ends: 37 [2019-10-22 08:58:25,876 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:58:25,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-22 08:58:25,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2019-10-22 08:58:25,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-22 08:58:25,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-10-22 08:58:25,880 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 21 [2019-10-22 08:58:25,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:25,881 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2019-10-22 08:58:25,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:58:25,881 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2019-10-22 08:58:25,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 08:58:25,881 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:25,882 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:26,084 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:26,085 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 08:58:26,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:26,085 INFO L82 PathProgramCache]: Analyzing trace with hash 130667105, now seen corresponding path program 4 times [2019-10-22 08:58:26,085 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:26,085 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267364854] [2019-10-22 08:58:26,085 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:26,086 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:26,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:26,179 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:26,179 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267364854] [2019-10-22 08:58:26,179 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375836059] [2019-10-22 08:58:26,179 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_96702ace-138e-4055-9c49-0482646d4d8e/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 08:58:26,210 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-22 08:58:26,210 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:26,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:58:26,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:26,238 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:26,243 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:26,244 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2019-10-22 08:58:26,245 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961923187] [2019-10-22 08:58:26,245 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 08:58:26,245 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:26,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 08:58:26,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:58:26,246 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 9 states. [2019-10-22 08:58:26,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:26,317 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2019-10-22 08:58:26,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:58:26,318 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2019-10-22 08:58:26,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:26,318 INFO L225 Difference]: With dead ends: 41 [2019-10-22 08:58:26,319 INFO L226 Difference]: Without dead ends: 41 [2019-10-22 08:58:26,319 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:58:26,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-22 08:58:26,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-10-22 08:58:26,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-22 08:58:26,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2019-10-22 08:58:26,323 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 25 [2019-10-22 08:58:26,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:26,323 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2019-10-22 08:58:26,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 08:58:26,324 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2019-10-22 08:58:26,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 08:58:26,324 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:26,325 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:26,525 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:26,526 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 08:58:26,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:26,526 INFO L82 PathProgramCache]: Analyzing trace with hash -656098114, now seen corresponding path program 5 times [2019-10-22 08:58:26,526 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:26,526 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910804961] [2019-10-22 08:58:26,527 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:26,527 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:26,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:26,645 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910804961] [2019-10-22 08:58:26,645 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273679318] [2019-10-22 08:58:26,646 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_96702ace-138e-4055-9c49-0482646d4d8e/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 08:58:26,687 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-10-22 08:58:26,688 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:26,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 08:58:26,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:26,773 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:26,773 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:26,774 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2019-10-22 08:58:26,774 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69466142] [2019-10-22 08:58:26,774 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-22 08:58:26,775 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:26,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-22 08:58:26,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2019-10-22 08:58:26,775 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 16 states. [2019-10-22 08:58:27,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:27,105 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2019-10-22 08:58:27,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-22 08:58:27,105 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2019-10-22 08:58:27,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:27,107 INFO L225 Difference]: With dead ends: 55 [2019-10-22 08:58:27,108 INFO L226 Difference]: Without dead ends: 55 [2019-10-22 08:58:27,108 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=218, Invalid=432, Unknown=0, NotChecked=0, Total=650 [2019-10-22 08:58:27,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-10-22 08:58:27,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-10-22 08:58:27,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-10-22 08:58:27,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2019-10-22 08:58:27,113 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 29 [2019-10-22 08:58:27,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:27,113 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2019-10-22 08:58:27,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-22 08:58:27,113 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2019-10-22 08:58:27,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 08:58:27,114 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:27,114 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:27,315 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:27,315 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 08:58:27,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:27,315 INFO L82 PathProgramCache]: Analyzing trace with hash 851171268, now seen corresponding path program 1 times [2019-10-22 08:58:27,316 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:27,316 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771899017] [2019-10-22 08:58:27,316 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:27,316 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:27,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-22 08:58:27,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771899017] [2019-10-22 08:58:27,357 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:27,357 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:58:27,358 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814754596] [2019-10-22 08:58:27,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:58:27,358 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:27,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:58:27,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:58:27,359 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 4 states. [2019-10-22 08:58:27,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:27,383 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2019-10-22 08:58:27,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:58:27,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2019-10-22 08:58:27,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:27,384 INFO L225 Difference]: With dead ends: 54 [2019-10-22 08:58:27,384 INFO L226 Difference]: Without dead ends: 54 [2019-10-22 08:58:27,385 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 08:58:27,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-10-22 08:58:27,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-10-22 08:58:27,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-10-22 08:58:27,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2019-10-22 08:58:27,388 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 31 [2019-10-22 08:58:27,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:27,388 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2019-10-22 08:58:27,389 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:58:27,389 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2019-10-22 08:58:27,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-22 08:58:27,389 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:27,389 INFO L380 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:27,390 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 08:58:27,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:27,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1037842699, now seen corresponding path program 1 times [2019-10-22 08:58:27,390 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:27,390 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097974415] [2019-10-22 08:58:27,390 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:27,390 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:27,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:27,445 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:27,445 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:58:27,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:58:27 BoogieIcfgContainer [2019-10-22 08:58:27,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:58:27,483 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:58:27,483 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:58:27,483 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:58:27,484 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:24" (3/4) ... [2019-10-22 08:58:27,486 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:58:27,555 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_96702ace-138e-4055-9c49-0482646d4d8e/bin/uautomizer/witness.graphml [2019-10-22 08:58:27,555 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:58:27,557 INFO L168 Benchmark]: Toolchain (without parser) took 4089.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -124.4 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:27,557 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:27,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -193.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:27,558 INFO L168 Benchmark]: Boogie Preprocessor took 33.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:27,558 INFO L168 Benchmark]: RCFGBuilder took 241.76 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:27,559 INFO L168 Benchmark]: TraceAbstraction took 3438.20 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: 42.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:27,559 INFO L168 Benchmark]: Witness Printer took 72.54 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:27,561 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 299.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -193.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 241.76 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3438.20 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: 42.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 11.5 GB. * Witness Printer took 72.54 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L6] int* p = malloc(10 * sizeof(int)); [L8] int i = 0; VAL [i=0, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] COND TRUE i < 10 VAL [i=0, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L9] p[i] = 1 VAL [i=0, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND FALSE !(i == 5) VAL [i=0, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] i++ VAL [i=1, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] COND TRUE i < 10 VAL [i=1, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L9] p[i] = 1 VAL [i=1, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND FALSE !(i == 5) VAL [i=1, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] i++ VAL [i=2, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] COND TRUE i < 10 VAL [i=2, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L9] p[i] = 1 VAL [i=2, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND FALSE !(i == 5) VAL [i=2, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] i++ VAL [i=3, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] COND TRUE i < 10 VAL [i=3, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L9] p[i] = 1 VAL [i=3, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND FALSE !(i == 5) VAL [i=3, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] i++ VAL [i=4, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] COND TRUE i < 10 VAL [i=4, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L9] p[i] = 1 VAL [i=4, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND FALSE !(i == 5) VAL [i=4, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] i++ VAL [i=5, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] COND TRUE i < 10 VAL [i=5, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L9] p[i] = 1 VAL [i=5, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND TRUE i == 5 VAL [i=5, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L11] free(p) VAL [i=5, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L11] free(p) VAL [i=5, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L11] free(p) [L8] i++ VAL [i=6, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] COND TRUE i < 10 VAL [i=6, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L9] p[i] = 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 6 error locations. Result: UNSAFE, OverallTime: 3.3s, OverallIterations: 10, TraceHistogramMax: 7, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 112 SDtfs, 176 SDslu, 252 SDs, 0 SdLazy, 421 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 175 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=8, 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, 9 MinimizatonAttempts, 11 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 304 NumberOfCodeBlocks, 304 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 255 ConstructedInterpolants, 0 QuantifiedInterpolants, 18153 SizeOfPredicates, 5 NumberOfNonLiveVariables, 360 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 70/247 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 incorrect! Received shutdown request...