./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength.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_b8a7c085-ac8b-4c09-b957-fa766c0924e4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b8a7c085-ac8b-4c09-b957-fa766c0924e4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b8a7c085-ac8b-4c09-b957-fa766c0924e4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b8a7c085-ac8b-4c09-b957-fa766c0924e4/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b8a7c085-ac8b-4c09-b957-fa766c0924e4/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b8a7c085-ac8b-4c09-b957-fa766c0924e4/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 a4e278d158dd9e8a83bb0a2afcbaa26c6819a0f8 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:56:47,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:47,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:47,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:47,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:47,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:47,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:47,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:47,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:47,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:47,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:47,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:47,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:47,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:47,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:47,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:47,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:47,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:47,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:47,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:47,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:47,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:47,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:47,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:47,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:47,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:47,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:47,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:47,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:47,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:47,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:47,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:47,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:47,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:47,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:47,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:47,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:47,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:47,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:47,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:47,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:47,477 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b8a7c085-ac8b-4c09-b957-fa766c0924e4/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 08:56:47,496 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:47,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:47,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:47,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:47,498 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:47,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:47,498 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:56:47,499 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:56:47,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:47,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:56:47,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:47,500 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 08:56:47,501 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 08:56:47,501 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 08:56:47,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:56:47,501 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:56:47,501 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:47,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:47,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:47,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:56:47,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:56:47,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:56:47,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:47,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:56:47,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:47,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:56:47,503 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_b8a7c085-ac8b-4c09-b957-fa766c0924e4/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 -> a4e278d158dd9e8a83bb0a2afcbaa26c6819a0f8 [2019-10-22 08:56:47,540 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:47,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:47,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:47,558 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:47,558 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:47,559 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b8a7c085-ac8b-4c09-b957-fa766c0924e4/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength.c [2019-10-22 08:56:47,605 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b8a7c085-ac8b-4c09-b957-fa766c0924e4/bin/uautomizer/data/13de01af0/15c9825449c043619911abd1ad112bd8/FLAG43746303e [2019-10-22 08:56:47,982 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:47,983 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b8a7c085-ac8b-4c09-b957-fa766c0924e4/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength.c [2019-10-22 08:56:47,987 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b8a7c085-ac8b-4c09-b957-fa766c0924e4/bin/uautomizer/data/13de01af0/15c9825449c043619911abd1ad112bd8/FLAG43746303e [2019-10-22 08:56:47,999 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b8a7c085-ac8b-4c09-b957-fa766c0924e4/bin/uautomizer/data/13de01af0/15c9825449c043619911abd1ad112bd8 [2019-10-22 08:56:48,001 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:48,002 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 08:56:48,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:48,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:48,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:48,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:48" (1/1) ... [2019-10-22 08:56:48,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d88486a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48, skipping insertion in model container [2019-10-22 08:56:48,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:48" (1/1) ... [2019-10-22 08:56:48,017 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:48,033 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:48,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:48,207 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:48,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:48,309 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:48,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48 WrapperNode [2019-10-22 08:56:48,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:48,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:48,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:48,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:48,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48" (1/1) ... [2019-10-22 08:56:48,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48" (1/1) ... [2019-10-22 08:56:48,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48" (1/1) ... [2019-10-22 08:56:48,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48" (1/1) ... [2019-10-22 08:56:48,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48" (1/1) ... [2019-10-22 08:56:48,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48" (1/1) ... [2019-10-22 08:56:48,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48" (1/1) ... [2019-10-22 08:56:48,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:48,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:48,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:48,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:48,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8a7c085-ac8b-4c09-b957-fa766c0924e4/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 08:56:48,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 08:56:48,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:48,409 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-10-22 08:56:48,409 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 08:56:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-10-22 08:56:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:56:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 08:56:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:56:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:56:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:56:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 08:56:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:48,645 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:48,645 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-22 08:56:48,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:48 BoogieIcfgContainer [2019-10-22 08:56:48,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:48,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:56:48,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:56:48,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:56:48,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:56:48" (1/3) ... [2019-10-22 08:56:48,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4feb97be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:48, skipping insertion in model container [2019-10-22 08:56:48,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48" (2/3) ... [2019-10-22 08:56:48,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4feb97be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:48, skipping insertion in model container [2019-10-22 08:56:48,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:48" (3/3) ... [2019-10-22 08:56:48,666 INFO L109 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength.c [2019-10-22 08:56:48,683 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:56:48,690 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-10-22 08:56:48,701 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-10-22 08:56:48,719 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:56:48,719 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 08:56:48,719 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:56:48,720 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:56:48,720 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:56:48,720 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:56:48,720 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:56:48,720 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:56:48,736 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-10-22 08:56:48,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 08:56:48,746 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:48,747 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:48,750 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:56:48,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:48,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2019-10-22 08:56:48,765 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:48,766 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806267515] [2019-10-22 08:56:48,766 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:48,766 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:48,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:49,022 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 08:56:49,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806267515] [2019-10-22 08:56:49,031 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:49,032 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:56:49,032 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917122480] [2019-10-22 08:56:49,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:56:49,037 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:49,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:56:49,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:49,049 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2019-10-22 08:56:49,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:49,263 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2019-10-22 08:56:49,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:56:49,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-10-22 08:56:49,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:49,276 INFO L225 Difference]: With dead ends: 58 [2019-10-22 08:56:49,276 INFO L226 Difference]: Without dead ends: 54 [2019-10-22 08:56:49,278 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:56:49,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-10-22 08:56:49,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2019-10-22 08:56:49,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-22 08:56:49,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2019-10-22 08:56:49,326 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2019-10-22 08:56:49,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:49,327 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2019-10-22 08:56:49,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:56:49,327 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2019-10-22 08:56:49,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:56:49,328 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:49,328 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:49,328 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:56:49,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:49,329 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2019-10-22 08:56:49,329 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:49,329 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454908959] [2019-10-22 08:56:49,329 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:49,330 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:49,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:49,430 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 08:56:49,435 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454908959] [2019-10-22 08:56:49,435 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:49,435 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:56:49,435 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157737411] [2019-10-22 08:56:49,437 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:56:49,437 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:49,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:56:49,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:56:49,438 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 6 states. [2019-10-22 08:56:49,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:49,633 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2019-10-22 08:56:49,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:56:49,634 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-10-22 08:56:49,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:49,635 INFO L225 Difference]: With dead ends: 59 [2019-10-22 08:56:49,635 INFO L226 Difference]: Without dead ends: 59 [2019-10-22 08:56:49,636 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:56:49,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-10-22 08:56:49,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 45. [2019-10-22 08:56:49,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-22 08:56:49,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2019-10-22 08:56:49,644 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 11 [2019-10-22 08:56:49,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:49,644 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2019-10-22 08:56:49,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:56:49,644 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2019-10-22 08:56:49,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:56:49,645 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:49,645 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:49,645 INFO L410 AbstractCegarLoop]: === Iteration 3 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:56:49,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:49,645 INFO L82 PathProgramCache]: Analyzing trace with hash 143250926, now seen corresponding path program 1 times [2019-10-22 08:56:49,645 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:49,646 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187695349] [2019-10-22 08:56:49,646 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:49,646 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:49,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:49,714 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 08:56:49,715 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187695349] [2019-10-22 08:56:49,715 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:49,715 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:49,715 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579964447] [2019-10-22 08:56:49,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:56:49,716 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:49,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:56:49,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:49,716 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 4 states. [2019-10-22 08:56:49,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:49,784 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2019-10-22 08:56:49,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:56:49,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-10-22 08:56:49,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:49,790 INFO L225 Difference]: With dead ends: 43 [2019-10-22 08:56:49,790 INFO L226 Difference]: Without dead ends: 43 [2019-10-22 08:56:49,790 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:49,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-22 08:56:49,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-10-22 08:56:49,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-22 08:56:49,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2019-10-22 08:56:49,795 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 15 [2019-10-22 08:56:49,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:49,796 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2019-10-22 08:56:49,796 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:56:49,796 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2019-10-22 08:56:49,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:56:49,796 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:49,796 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:49,797 INFO L410 AbstractCegarLoop]: === Iteration 4 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:56:49,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:49,797 INFO L82 PathProgramCache]: Analyzing trace with hash 143250927, now seen corresponding path program 1 times [2019-10-22 08:56:49,797 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:49,797 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761674110] [2019-10-22 08:56:49,798 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:49,798 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:49,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:49,856 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 08:56:49,856 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761674110] [2019-10-22 08:56:49,856 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:49,856 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:49,856 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409219393] [2019-10-22 08:56:49,857 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:56:49,857 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:49,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:56:49,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:49,858 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 4 states. [2019-10-22 08:56:49,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:49,959 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2019-10-22 08:56:49,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:56:49,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-10-22 08:56:49,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:49,960 INFO L225 Difference]: With dead ends: 47 [2019-10-22 08:56:49,960 INFO L226 Difference]: Without dead ends: 47 [2019-10-22 08:56:49,961 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:49,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-22 08:56:49,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2019-10-22 08:56:49,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-22 08:56:49,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2019-10-22 08:56:49,968 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 15 [2019-10-22 08:56:49,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:49,968 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2019-10-22 08:56:49,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:56:49,968 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2019-10-22 08:56:49,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 08:56:49,969 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:49,969 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:49,969 INFO L410 AbstractCegarLoop]: === Iteration 5 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:56:49,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:49,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1902162976, now seen corresponding path program 1 times [2019-10-22 08:56:49,969 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:49,970 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248118659] [2019-10-22 08:56:49,970 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:49,970 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:49,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:50,054 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 08:56:50,061 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248118659] [2019-10-22 08:56:50,061 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291165895] [2019-10-22 08:56:50,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8a7c085-ac8b-4c09-b957-fa766c0924e4/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 08:56:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:50,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 08:56:50,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:50,154 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 08:56:50,154 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:50,155 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-10-22 08:56:50,155 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362790970] [2019-10-22 08:56:50,160 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:56:50,161 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:50,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:56:50,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:56:50,162 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 6 states. [2019-10-22 08:56:50,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:50,282 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2019-10-22 08:56:50,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:56:50,283 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-10-22 08:56:50,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:50,284 INFO L225 Difference]: With dead ends: 69 [2019-10-22 08:56:50,284 INFO L226 Difference]: Without dead ends: 69 [2019-10-22 08:56:50,284 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:56:50,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-10-22 08:56:50,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2019-10-22 08:56:50,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-10-22 08:56:50,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2019-10-22 08:56:50,290 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 21 [2019-10-22 08:56:50,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:50,290 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2019-10-22 08:56:50,290 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:56:50,290 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2019-10-22 08:56:50,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 08:56:50,291 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:50,291 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:50,492 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:50,493 INFO L410 AbstractCegarLoop]: === Iteration 6 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:56:50,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:50,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1165178250, now seen corresponding path program 1 times [2019-10-22 08:56:50,493 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:50,493 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143395362] [2019-10-22 08:56:50,493 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,493 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:50,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 08:56:50,563 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143395362] [2019-10-22 08:56:50,563 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:50,563 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:56:50,563 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224768178] [2019-10-22 08:56:50,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:56:50,564 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:50,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:56:50,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:56:50,565 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 6 states. [2019-10-22 08:56:50,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:50,696 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2019-10-22 08:56:50,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:56:50,696 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-10-22 08:56:50,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:50,697 INFO L225 Difference]: With dead ends: 62 [2019-10-22 08:56:50,698 INFO L226 Difference]: Without dead ends: 62 [2019-10-22 08:56:50,698 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:56:50,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-10-22 08:56:50,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2019-10-22 08:56:50,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-10-22 08:56:50,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2019-10-22 08:56:50,713 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 22 [2019-10-22 08:56:50,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:50,713 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2019-10-22 08:56:50,713 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:56:50,714 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2019-10-22 08:56:50,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 08:56:50,714 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:50,715 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:50,715 INFO L410 AbstractCegarLoop]: === Iteration 7 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:56:50,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:50,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1760787427, now seen corresponding path program 1 times [2019-10-22 08:56:50,716 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:50,716 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165242874] [2019-10-22 08:56:50,716 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,716 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:50,797 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165242874] [2019-10-22 08:56:50,797 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:50,797 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:56:50,798 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596058191] [2019-10-22 08:56:50,798 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:56:50,798 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:50,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:56:50,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:56:50,799 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 6 states. [2019-10-22 08:56:50,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:50,906 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2019-10-22 08:56:50,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:56:50,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2019-10-22 08:56:50,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:50,907 INFO L225 Difference]: With dead ends: 53 [2019-10-22 08:56:50,907 INFO L226 Difference]: Without dead ends: 53 [2019-10-22 08:56:50,908 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 08:56:50,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-10-22 08:56:50,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2019-10-22 08:56:50,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-10-22 08:56:50,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2019-10-22 08:56:50,915 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 23 [2019-10-22 08:56:50,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:50,915 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2019-10-22 08:56:50,915 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:56:50,916 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2019-10-22 08:56:50,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 08:56:50,916 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:50,916 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:50,917 INFO L410 AbstractCegarLoop]: === Iteration 8 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:56:50,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:50,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1760787428, now seen corresponding path program 1 times [2019-10-22 08:56:50,917 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:50,917 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956669258] [2019-10-22 08:56:50,918 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,918 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:51,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:56:51,068 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956669258] [2019-10-22 08:56:51,068 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:51,069 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-22 08:56:51,069 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104142682] [2019-10-22 08:56:51,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 08:56:51,069 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:51,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 08:56:51,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:56:51,073 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 10 states. [2019-10-22 08:56:51,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:51,393 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2019-10-22 08:56:51,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 08:56:51,395 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2019-10-22 08:56:51,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:51,396 INFO L225 Difference]: With dead ends: 55 [2019-10-22 08:56:51,396 INFO L226 Difference]: Without dead ends: 55 [2019-10-22 08:56:51,396 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2019-10-22 08:56:51,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-10-22 08:56:51,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2019-10-22 08:56:51,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-10-22 08:56:51,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2019-10-22 08:56:51,405 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 23 [2019-10-22 08:56:51,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:51,405 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2019-10-22 08:56:51,405 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 08:56:51,405 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2019-10-22 08:56:51,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-22 08:56:51,406 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:51,406 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:51,406 INFO L410 AbstractCegarLoop]: === Iteration 9 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:56:51,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:51,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1134972881, now seen corresponding path program 1 times [2019-10-22 08:56:51,407 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:51,407 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758575098] [2019-10-22 08:56:51,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:51,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:51,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:51,543 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 08:56:51,549 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758575098] [2019-10-22 08:56:51,553 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:51,554 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:56:51,554 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838037456] [2019-10-22 08:56:51,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:56:51,554 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:51,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:56:51,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:56:51,555 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 7 states. [2019-10-22 08:56:51,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:51,686 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2019-10-22 08:56:51,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:56:51,686 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2019-10-22 08:56:51,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:51,687 INFO L225 Difference]: With dead ends: 52 [2019-10-22 08:56:51,687 INFO L226 Difference]: Without dead ends: 52 [2019-10-22 08:56:51,688 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 08:56:51,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-10-22 08:56:51,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2019-10-22 08:56:51,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-10-22 08:56:51,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2019-10-22 08:56:51,691 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 26 [2019-10-22 08:56:51,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:51,694 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2019-10-22 08:56:51,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:56:51,694 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2019-10-22 08:56:51,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 08:56:51,694 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:51,695 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:51,695 INFO L410 AbstractCegarLoop]: === Iteration 10 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:56:51,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:51,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1992931931, now seen corresponding path program 1 times [2019-10-22 08:56:51,695 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:51,695 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973176209] [2019-10-22 08:56:51,696 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:51,696 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:51,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:51,806 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973176209] [2019-10-22 08:56:51,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914026602] [2019-10-22 08:56:51,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8a7c085-ac8b-4c09-b957-fa766c0924e4/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 08:56:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:51,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 08:56:51,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:51,893 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:51,894 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 12 [2019-10-22 08:56:51,894 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634292594] [2019-10-22 08:56:51,894 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-22 08:56:51,894 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:51,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-22 08:56:51,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:56:51,895 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 12 states. [2019-10-22 08:56:52,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:52,122 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2019-10-22 08:56:52,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 08:56:52,122 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2019-10-22 08:56:52,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:52,122 INFO L225 Difference]: With dead ends: 78 [2019-10-22 08:56:52,123 INFO L226 Difference]: Without dead ends: 78 [2019-10-22 08:56:52,123 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2019-10-22 08:56:52,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-10-22 08:56:52,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 62. [2019-10-22 08:56:52,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-10-22 08:56:52,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2019-10-22 08:56:52,130 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 27 [2019-10-22 08:56:52,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:52,130 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2019-10-22 08:56:52,130 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-22 08:56:52,130 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2019-10-22 08:56:52,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-22 08:56:52,131 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:52,131 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:52,331 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:52,332 INFO L410 AbstractCegarLoop]: === Iteration 11 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:56:52,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:52,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1979886526, now seen corresponding path program 2 times [2019-10-22 08:56:52,332 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:52,332 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15038670] [2019-10-22 08:56:52,332 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:52,333 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:52,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:52,392 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 08:56:52,392 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15038670] [2019-10-22 08:56:52,393 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874938329] [2019-10-22 08:56:52,393 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8a7c085-ac8b-4c09-b957-fa766c0924e4/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 08:56:52,420 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-22 08:56:52,420 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:52,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:56:52,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:52,463 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 6 treesize of output 5 [2019-10-22 08:56:52,467 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:56:52,473 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:56:52,473 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:56:52,474 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-10-22 08:56:52,560 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-22 08:56:52,561 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 08:56:52,561 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2019-10-22 08:56:52,561 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360410588] [2019-10-22 08:56:52,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:56:52,561 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:52,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:56:52,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:56:52,562 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 6 states. [2019-10-22 08:56:52,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:52,600 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2019-10-22 08:56:52,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:56:52,600 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2019-10-22 08:56:52,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:52,601 INFO L225 Difference]: With dead ends: 61 [2019-10-22 08:56:52,601 INFO L226 Difference]: Without dead ends: 61 [2019-10-22 08:56:52,601 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:56:52,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-10-22 08:56:52,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-10-22 08:56:52,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-10-22 08:56:52,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2019-10-22 08:56:52,605 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 32 [2019-10-22 08:56:52,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:52,605 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2019-10-22 08:56:52,605 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:56:52,605 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2019-10-22 08:56:52,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-22 08:56:52,606 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:52,606 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:52,806 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:52,807 INFO L410 AbstractCegarLoop]: === Iteration 12 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:56:52,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:52,807 INFO L82 PathProgramCache]: Analyzing trace with hash -13619034, now seen corresponding path program 1 times [2019-10-22 08:56:52,807 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:52,807 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005927823] [2019-10-22 08:56:52,807 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:52,807 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:52,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 08:56:52,849 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005927823] [2019-10-22 08:56:52,849 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564876800] [2019-10-22 08:56:52,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8a7c085-ac8b-4c09-b957-fa766c0924e4/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 08:56:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:52,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:56:52,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:52,926 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:56:52,926 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 08:56:52,926 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2019-10-22 08:56:52,926 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211240878] [2019-10-22 08:56:52,927 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:56:52,927 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:52,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:56:52,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:56:52,927 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand 6 states. [2019-10-22 08:56:53,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:53,013 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2019-10-22 08:56:53,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:56:53,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2019-10-22 08:56:53,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:53,014 INFO L225 Difference]: With dead ends: 73 [2019-10-22 08:56:53,014 INFO L226 Difference]: Without dead ends: 67 [2019-10-22 08:56:53,014 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:56:53,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-10-22 08:56:53,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2019-10-22 08:56:53,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-10-22 08:56:53,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2019-10-22 08:56:53,018 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 35 [2019-10-22 08:56:53,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:53,018 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2019-10-22 08:56:53,018 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:56:53,018 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2019-10-22 08:56:53,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-22 08:56:53,019 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:53,019 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:53,220 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:53,220 INFO L410 AbstractCegarLoop]: === Iteration 13 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:56:53,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:53,220 INFO L82 PathProgramCache]: Analyzing trace with hash -548707221, now seen corresponding path program 1 times [2019-10-22 08:56:53,220 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:53,221 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116353074] [2019-10-22 08:56:53,221 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:53,221 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:53,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:53,273 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 08:56:53,275 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116353074] [2019-10-22 08:56:53,276 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041537399] [2019-10-22 08:56:53,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8a7c085-ac8b-4c09-b957-fa766c0924e4/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 08:56:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:53,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:56:53,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:53,339 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 08:56:53,340 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:53,340 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-10-22 08:56:53,340 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554311476] [2019-10-22 08:56:53,341 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:56:53,341 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:53,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:56:53,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:56:53,341 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 7 states. [2019-10-22 08:56:53,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:53,466 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2019-10-22 08:56:53,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:56:53,466 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2019-10-22 08:56:53,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:53,467 INFO L225 Difference]: With dead ends: 87 [2019-10-22 08:56:53,467 INFO L226 Difference]: Without dead ends: 87 [2019-10-22 08:56:53,468 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 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 08:56:53,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-10-22 08:56:53,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 70. [2019-10-22 08:56:53,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-10-22 08:56:53,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2019-10-22 08:56:53,478 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 40 [2019-10-22 08:56:53,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:53,478 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2019-10-22 08:56:53,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:56:53,478 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2019-10-22 08:56:53,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-22 08:56:53,479 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:53,479 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:53,686 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:53,686 INFO L410 AbstractCegarLoop]: === Iteration 14 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:56:53,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:53,687 INFO L82 PathProgramCache]: Analyzing trace with hash -174164318, now seen corresponding path program 2 times [2019-10-22 08:56:53,687 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:53,687 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307839901] [2019-10-22 08:56:53,687 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:53,687 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:53,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-22 08:56:53,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307839901] [2019-10-22 08:56:53,808 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719955320] [2019-10-22 08:56:53,808 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8a7c085-ac8b-4c09-b957-fa766c0924e4/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:53,860 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:56:53,860 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:53,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:56:53,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:53,873 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-22 08:56:53,874 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:53,876 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2019-10-22 08:56:53,876 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438955028] [2019-10-22 08:56:53,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:56:53,877 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:53,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:56:53,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:56:53,877 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand 8 states. [2019-10-22 08:56:54,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:54,037 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2019-10-22 08:56:54,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:56:54,037 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2019-10-22 08:56:54,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:54,038 INFO L225 Difference]: With dead ends: 72 [2019-10-22 08:56:54,038 INFO L226 Difference]: Without dead ends: 72 [2019-10-22 08:56:54,038 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:56:54,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-10-22 08:56:54,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2019-10-22 08:56:54,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-10-22 08:56:54,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2019-10-22 08:56:54,041 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 43 [2019-10-22 08:56:54,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:54,042 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2019-10-22 08:56:54,042 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:56:54,042 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2019-10-22 08:56:54,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-22 08:56:54,043 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:54,043 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:54,244 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:54,244 INFO L410 AbstractCegarLoop]: === Iteration 15 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:56:54,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:54,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1444841842, now seen corresponding path program 2 times [2019-10-22 08:56:54,245 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:54,245 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658741018] [2019-10-22 08:56:54,245 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:54,245 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:54,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-22 08:56:54,347 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658741018] [2019-10-22 08:56:54,348 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626002860] [2019-10-22 08:56:54,348 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8a7c085-ac8b-4c09-b957-fa766c0924e4/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:54,386 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-22 08:56:54,387 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:54,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:56:54,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:54,429 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2019-10-22 08:56:54,429 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:56:54,432 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:56:54,432 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 08:56:54,432 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2019-10-22 08:56:54,475 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2019-10-22 08:56:54,476 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:56:54,478 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:56:54,479 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 08:56:54,479 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2019-10-22 08:56:54,515 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2019-10-22 08:56:54,515 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:56:54,517 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:56:54,517 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 08:56:54,518 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2019-10-22 08:56:54,575 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-22 08:56:54,576 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 08:56:54,576 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2019-10-22 08:56:54,576 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801886438] [2019-10-22 08:56:54,576 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:56:54,577 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:54,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:56:54,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:56:54,577 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand 6 states. [2019-10-22 08:56:54,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:54,640 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2019-10-22 08:56:54,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:56:54,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2019-10-22 08:56:54,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:54,644 INFO L225 Difference]: With dead ends: 67 [2019-10-22 08:56:54,644 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:56:54,644 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:56:54,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:56:54,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:56:54,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:56:54,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:56:54,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2019-10-22 08:56:54,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:54,645 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:56:54,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:56:54,645 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:56:54,645 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:56:54,846 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:54,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:56:54 BoogieIcfgContainer [2019-10-22 08:56:54,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:56:54,850 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:56:54,850 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:56:54,850 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:56:54,850 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:48" (3/4) ... [2019-10-22 08:56:54,854 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:56:54,860 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-10-22 08:56:54,860 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2019-10-22 08:56:54,860 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-10-22 08:56:54,864 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2019-10-22 08:56:54,864 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-10-22 08:56:54,864 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 08:56:54,864 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-10-22 08:56:54,899 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b8a7c085-ac8b-4c09-b957-fa766c0924e4/bin/uautomizer/witness.graphml [2019-10-22 08:56:54,900 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:56:54,901 INFO L168 Benchmark]: Toolchain (without parser) took 6899.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.2 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -120.5 MB). Peak memory consumption was 55.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:54,901 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:54,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -195.3 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:54,902 INFO L168 Benchmark]: Boogie Preprocessor took 46.78 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:54,902 INFO L168 Benchmark]: RCFGBuilder took 289.43 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:54,903 INFO L168 Benchmark]: TraceAbstraction took 6189.67 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 36.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.2 MB). Peak memory consumption was 79.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:54,903 INFO L168 Benchmark]: Witness Printer took 50.11 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: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:54,905 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 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 307.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -195.3 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 46.78 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 289.43 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6189.67 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 36.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.2 MB). Peak memory consumption was 79.4 MB. Max. memory is 11.5 GB. * Witness Printer took 50.11 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: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 26]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 26]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 23]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 23]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 8 error locations. Result: SAFE, OverallTime: 6.1s, OverallIterations: 15, TraceHistogramMax: 3, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 353 SDtfs, 602 SDslu, 559 SDs, 0 SdLazy, 1287 SolverSat, 121 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 420 GetRequests, 306 SyntacticMatches, 9 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 103 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 653 NumberOfCodeBlocks, 588 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 631 ConstructedInterpolants, 36 QuantifiedInterpolants, 74548 SizeOfPredicates, 11 NumberOfNonLiveVariables, 704 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 22 InterpolantComputations, 11 PerfectInterpolantSequences, 215/277 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...