./Ultimate.py --spec ../../sv-benchmarks/c/MemSafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_4a4dcb41-47ad-453b-b391-8743acc0e06c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4a4dcb41-47ad-453b-b391-8743acc0e06c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4a4dcb41-47ad-453b-b391-8743acc0e06c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4a4dcb41-47ad-453b-b391-8743acc0e06c/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c -s /tmp/vcloud-vcloud-master/worker/working_dir_4a4dcb41-47ad-453b-b391-8743acc0e06c/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4a4dcb41-47ad-453b-b391-8743acc0e06c/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6853fb9e064ccfef5e54a8bac94eb86beeed80f .................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 04:45:42,006 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 04:45:42,008 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 04:45:42,019 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 04:45:42,020 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 04:45:42,020 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 04:45:42,021 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 04:45:42,024 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 04:45:42,026 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 04:45:42,029 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 04:45:42,030 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 04:45:42,030 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 04:45:42,031 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 04:45:42,033 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 04:45:42,040 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 04:45:42,040 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 04:45:42,041 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 04:45:42,042 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 04:45:42,045 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 04:45:42,047 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 04:45:42,049 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 04:45:42,051 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 04:45:42,053 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 04:45:42,055 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 04:45:42,055 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 04:45:42,056 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 04:45:42,057 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 04:45:42,057 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 04:45:42,058 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 04:45:42,058 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 04:45:42,058 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 04:45:42,059 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 04:45:42,060 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 04:45:42,060 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 04:45:42,061 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 04:45:42,062 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 04:45:42,062 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4a4dcb41-47ad-453b-b391-8743acc0e06c/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-10-27 04:45:42,071 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 04:45:42,072 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 04:45:42,073 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 04:45:42,073 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 04:45:42,073 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 04:45:42,073 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 04:45:42,073 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 04:45:42,073 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 04:45:42,073 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 04:45:42,074 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 04:45:42,074 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 04:45:42,074 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-27 04:45:42,074 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-27 04:45:42,074 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-27 04:45:42,074 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 04:45:42,074 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 04:45:42,075 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 04:45:42,075 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 04:45:42,075 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 04:45:42,077 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 04:45:42,077 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 04:45:42,077 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 04:45:42,077 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 04:45:42,077 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 04:45:42,077 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 04:45:42,077 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_4a4dcb41-47ad-453b-b391-8743acc0e06c/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6853fb9e064ccfef5e54a8bac94eb86beeed80f [2018-10-27 04:45:42,103 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 04:45:42,112 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 04:45:42,115 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 04:45:42,116 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 04:45:42,117 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 04:45:42,117 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4a4dcb41-47ad-453b-b391-8743acc0e06c/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c [2018-10-27 04:45:42,161 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4a4dcb41-47ad-453b-b391-8743acc0e06c/bin-2019/uautomizer/data/07f6c10ac/0ff80baabd3d4887996774317786d332/FLAG68e9c3918 [2018-10-27 04:45:42,501 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 04:45:42,502 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4a4dcb41-47ad-453b-b391-8743acc0e06c/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c [2018-10-27 04:45:42,507 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4a4dcb41-47ad-453b-b391-8743acc0e06c/bin-2019/uautomizer/data/07f6c10ac/0ff80baabd3d4887996774317786d332/FLAG68e9c3918 [2018-10-27 04:45:42,517 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4a4dcb41-47ad-453b-b391-8743acc0e06c/bin-2019/uautomizer/data/07f6c10ac/0ff80baabd3d4887996774317786d332 [2018-10-27 04:45:42,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 04:45:42,520 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 04:45:42,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 04:45:42,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 04:45:42,524 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 04:45:42,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:42" (1/1) ... [2018-10-27 04:45:42,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa72dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:42, skipping insertion in model container [2018-10-27 04:45:42,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:42" (1/1) ... [2018-10-27 04:45:42,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 04:45:42,550 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 04:45:42,665 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 04:45:42,671 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 04:45:42,687 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 04:45:42,700 INFO L193 MainTranslator]: Completed translation [2018-10-27 04:45:42,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:42 WrapperNode [2018-10-27 04:45:42,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 04:45:42,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 04:45:42,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 04:45:42,701 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 04:45:42,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:42" (1/1) ... [2018-10-27 04:45:42,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:42" (1/1) ... [2018-10-27 04:45:42,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:42" (1/1) ... [2018-10-27 04:45:42,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:42" (1/1) ... [2018-10-27 04:45:42,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:42" (1/1) ... [2018-10-27 04:45:42,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:42" (1/1) ... [2018-10-27 04:45:42,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:42" (1/1) ... [2018-10-27 04:45:42,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 04:45:42,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 04:45:42,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 04:45:42,735 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 04:45:42,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a4dcb41-47ad-453b-b391-8743acc0e06c/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 04:45:42,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 04:45:42,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 04:45:42,847 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2018-10-27 04:45:42,847 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-10-27 04:45:42,847 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 04:45:42,847 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2018-10-27 04:45:42,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-27 04:45:42,847 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-10-27 04:45:42,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-27 04:45:42,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-27 04:45:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-27 04:45:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 04:45:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 04:45:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 04:45:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-27 04:45:43,342 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 04:45:43,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:43 BoogieIcfgContainer [2018-10-27 04:45:43,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 04:45:43,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 04:45:43,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 04:45:43,348 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 04:45:43,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:45:42" (1/3) ... [2018-10-27 04:45:43,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f8e820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:43, skipping insertion in model container [2018-10-27 04:45:43,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:42" (2/3) ... [2018-10-27 04:45:43,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f8e820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:43, skipping insertion in model container [2018-10-27 04:45:43,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:43" (3/3) ... [2018-10-27 04:45:43,352 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_false-valid-deref-write.c [2018-10-27 04:45:43,361 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 04:45:43,367 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-10-27 04:45:43,385 INFO L257 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2018-10-27 04:45:43,414 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 04:45:43,416 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 04:45:43,416 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-27 04:45:43,416 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 04:45:43,416 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 04:45:43,416 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 04:45:43,416 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 04:45:43,416 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 04:45:43,416 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 04:45:43,433 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2018-10-27 04:45:43,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-27 04:45:43,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:43,449 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:43,451 INFO L424 AbstractCegarLoop]: === Iteration 1 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-10-27 04:45:43,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:43,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1613294992, now seen corresponding path program 1 times [2018-10-27 04:45:43,462 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:43,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:43,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:43,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:43,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:43,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:43,576 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:43,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 04:45:43,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-27 04:45:43,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 04:45:43,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 04:45:43,594 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 2 states. [2018-10-27 04:45:43,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:43,615 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2018-10-27 04:45:43,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 04:45:43,617 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-10-27 04:45:43,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:43,626 INFO L225 Difference]: With dead ends: 68 [2018-10-27 04:45:43,627 INFO L226 Difference]: Without dead ends: 65 [2018-10-27 04:45:43,629 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 04:45:43,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-27 04:45:43,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-27 04:45:43,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-27 04:45:43,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-10-27 04:45:43,669 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 13 [2018-10-27 04:45:43,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:43,670 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-10-27 04:45:43,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-27 04:45:43,670 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-10-27 04:45:43,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-27 04:45:43,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:43,672 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:43,672 INFO L424 AbstractCegarLoop]: === Iteration 2 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-10-27 04:45:43,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:43,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1969953325, now seen corresponding path program 1 times [2018-10-27 04:45:43,673 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:43,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:43,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:43,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:43,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:43,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:43,725 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:43,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 04:45:43,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 04:45:43,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 04:45:43,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 04:45:43,727 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 3 states. [2018-10-27 04:45:43,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:43,869 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2018-10-27 04:45:43,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 04:45:43,869 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-10-27 04:45:43,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:43,871 INFO L225 Difference]: With dead ends: 71 [2018-10-27 04:45:43,871 INFO L226 Difference]: Without dead ends: 71 [2018-10-27 04:45:43,872 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 04:45:43,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-27 04:45:43,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2018-10-27 04:45:43,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-27 04:45:43,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2018-10-27 04:45:43,883 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 14 [2018-10-27 04:45:43,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:43,884 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2018-10-27 04:45:43,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 04:45:43,884 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2018-10-27 04:45:43,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-27 04:45:43,884 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:43,884 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:43,885 INFO L424 AbstractCegarLoop]: === Iteration 3 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-10-27 04:45:43,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:43,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1297061679, now seen corresponding path program 1 times [2018-10-27 04:45:43,885 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:43,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:43,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:43,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:43,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:44,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:44,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:44,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 04:45:44,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 04:45:44,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 04:45:44,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 04:45:44,070 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2018-10-27 04:45:44,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:44,233 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2018-10-27 04:45:44,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 04:45:44,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-10-27 04:45:44,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:44,235 INFO L225 Difference]: With dead ends: 62 [2018-10-27 04:45:44,235 INFO L226 Difference]: Without dead ends: 62 [2018-10-27 04:45:44,236 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 04:45:44,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-27 04:45:44,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-27 04:45:44,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-27 04:45:44,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2018-10-27 04:45:44,241 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 17 [2018-10-27 04:45:44,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:44,242 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2018-10-27 04:45:44,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 04:45:44,242 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2018-10-27 04:45:44,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-27 04:45:44,243 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:44,243 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:44,243 INFO L424 AbstractCegarLoop]: === Iteration 4 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-10-27 04:45:44,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:44,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1297061678, now seen corresponding path program 1 times [2018-10-27 04:45:44,244 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:44,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:44,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:44,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:44,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:44,452 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 04:45:44,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:44,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:44,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 04:45:44,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 04:45:44,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 04:45:44,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-27 04:45:44,480 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 7 states. [2018-10-27 04:45:45,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:45,172 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2018-10-27 04:45:45,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 04:45:45,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-10-27 04:45:45,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:45,175 INFO L225 Difference]: With dead ends: 101 [2018-10-27 04:45:45,176 INFO L226 Difference]: Without dead ends: 101 [2018-10-27 04:45:45,176 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-10-27 04:45:45,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-27 04:45:45,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 84. [2018-10-27 04:45:45,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-27 04:45:45,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2018-10-27 04:45:45,185 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 17 [2018-10-27 04:45:45,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:45,185 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2018-10-27 04:45:45,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 04:45:45,185 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2018-10-27 04:45:45,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-27 04:45:45,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:45,186 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:45,186 INFO L424 AbstractCegarLoop]: === Iteration 5 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-10-27 04:45:45,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:45,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1554206377, now seen corresponding path program 1 times [2018-10-27 04:45:45,186 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:45,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:45,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:45,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:45,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:45,228 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:45,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 04:45:45,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 04:45:45,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 04:45:45,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 04:45:45,229 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand 3 states. [2018-10-27 04:45:45,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:45,291 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2018-10-27 04:45:45,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 04:45:45,294 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-10-27 04:45:45,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:45,295 INFO L225 Difference]: With dead ends: 83 [2018-10-27 04:45:45,295 INFO L226 Difference]: Without dead ends: 83 [2018-10-27 04:45:45,295 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 04:45:45,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-27 04:45:45,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-27 04:45:45,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-27 04:45:45,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2018-10-27 04:45:45,304 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 18 [2018-10-27 04:45:45,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:45,304 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2018-10-27 04:45:45,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 04:45:45,304 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2018-10-27 04:45:45,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-27 04:45:45,305 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:45,305 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:45,305 INFO L424 AbstractCegarLoop]: === Iteration 6 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-10-27 04:45:45,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:45,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1554206376, now seen corresponding path program 1 times [2018-10-27 04:45:45,306 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:45,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:45,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:45,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:45,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 04:45:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 04:45:45,354 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 04:45:45,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 04:45:45 BoogieIcfgContainer [2018-10-27 04:45:45,378 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 04:45:45,379 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 04:45:45,379 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 04:45:45,379 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 04:45:45,379 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:43" (3/4) ... [2018-10-27 04:45:45,381 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-27 04:45:45,420 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_4a4dcb41-47ad-453b-b391-8743acc0e06c/bin-2019/uautomizer/witness.graphml [2018-10-27 04:45:45,420 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 04:45:45,421 INFO L168 Benchmark]: Toolchain (without parser) took 2901.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 953.1 MB in the beginning and 1.0 GB in the end (delta: -51.1 MB). Peak memory consumption was 78.4 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:45,421 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 04:45:45,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 179.50 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 942.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:45,422 INFO L168 Benchmark]: Boogie Preprocessor took 33.19 ms. Allocated memory is still 1.0 GB. Free memory was 942.3 MB in the beginning and 939.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:45,423 INFO L168 Benchmark]: RCFGBuilder took 608.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 939.7 MB in the beginning and 1.1 GB in the end (delta: -163.6 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:45,425 INFO L168 Benchmark]: TraceAbstraction took 2034.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 95.6 MB). Peak memory consumption was 95.6 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:45,425 INFO L168 Benchmark]: Witness Printer took 41.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:45,428 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 179.50 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 942.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.19 ms. Allocated memory is still 1.0 GB. Free memory was 942.3 MB in the beginning and 939.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 608.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 939.7 MB in the beginning and 1.1 GB in the end (delta: -163.6 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2034.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 95.6 MB). Peak memory consumption was 95.6 MB. Max. memory is 11.5 GB. * Witness Printer took 41.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 23]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; VAL [b={403:0}] [L33] i = 0 VAL [b={403:0}, i=0] [L33] COND TRUE i < 100 VAL [b={403:0}, i=0] [L34] CALL foo(i, b, i + 1) VAL [\old(n)=0, \old(size)=1, b={403:0}] [L21] FCALL int a[n], i; [L22] i = 0 VAL [\old(n)=0, \old(size)=1, a={404:0}, b={403:0}, b={403:0}, i=0, n=0, size=1] [L22] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, a={404:0}, b={403:0}, b={403:0}, i=0, n=0, size=1] [L23] EXPR, FCALL b[i] VAL [\old(n)=0, \old(size)=1, a={404:0}, b={403:0}, b={403:0}, b[i]=401, i=0, n=0, size=1] [L23] FCALL a[i] = b[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 68 locations, 11 error locations. UNSAFE Result, 1.9s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 296 SDtfs, 157 SDslu, 310 SDs, 0 SdLazy, 191 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 4050 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...