./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6eca045e-c58a-438e-b4c5-4e0b3a1746db/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6eca045e-c58a-438e-b4c5-4e0b3a1746db/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6eca045e-c58a-438e-b4c5-4e0b3a1746db/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6eca045e-c58a-438e-b4c5-4e0b3a1746db/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_6eca045e-c58a-438e-b4c5-4e0b3a1746db/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6eca045e-c58a-438e-b4c5-4e0b3a1746db/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d4019c4159483ac83115551cd48ccd0ba128dc3d ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 13:12:59,526 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 13:12:59,527 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 13:12:59,533 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 13:12:59,533 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 13:12:59,533 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 13:12:59,534 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 13:12:59,535 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 13:12:59,536 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 13:12:59,536 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 13:12:59,536 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 13:12:59,537 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 13:12:59,537 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 13:12:59,537 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 13:12:59,538 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 13:12:59,538 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 13:12:59,539 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 13:12:59,540 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 13:12:59,541 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 13:12:59,541 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 13:12:59,542 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 13:12:59,542 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 13:12:59,543 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 13:12:59,544 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 13:12:59,544 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 13:12:59,544 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 13:12:59,545 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 13:12:59,545 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 13:12:59,545 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 13:12:59,546 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 13:12:59,546 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 13:12:59,546 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 13:12:59,547 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 13:12:59,547 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 13:12:59,547 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 13:12:59,547 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 13:12:59,548 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6eca045e-c58a-438e-b4c5-4e0b3a1746db/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-09 13:12:59,555 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 13:12:59,555 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 13:12:59,555 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 13:12:59,556 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 13:12:59,556 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 13:12:59,556 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 13:12:59,556 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 13:12:59,556 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 13:12:59,556 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 13:12:59,556 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 13:12:59,556 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 13:12:59,556 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 13:12:59,556 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 13:12:59,557 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 13:12:59,557 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 13:12:59,557 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 13:12:59,557 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 13:12:59,557 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 13:12:59,557 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 13:12:59,557 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 13:12:59,557 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 13:12:59,557 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 13:12:59,557 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 13:12:59,557 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 13:12:59,558 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 13:12:59,558 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 13:12:59,558 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 13:12:59,558 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 13:12:59,558 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 13:12:59,558 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 13:12:59,558 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 13:12:59,558 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 13:12:59,558 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 13:12:59,558 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 13:12:59,558 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 13:12:59,558 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 13:12:59,558 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_6eca045e-c58a-438e-b4c5-4e0b3a1746db/bin-2019/utaipan 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 -> Taipan 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 -> d4019c4159483ac83115551cd48ccd0ba128dc3d [2018-12-09 13:12:59,576 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 13:12:59,582 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 13:12:59,584 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 13:12:59,585 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 13:12:59,585 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 13:12:59,586 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6eca045e-c58a-438e-b4c5-4e0b3a1746db/bin-2019/utaipan/../../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i [2018-12-09 13:12:59,622 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6eca045e-c58a-438e-b4c5-4e0b3a1746db/bin-2019/utaipan/data/e82af24dd/b10d25bc9a88424c8735955c926a8775/FLAG7d32ce394 [2018-12-09 13:13:00,054 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 13:13:00,054 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6eca045e-c58a-438e-b4c5-4e0b3a1746db/sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i [2018-12-09 13:13:00,060 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6eca045e-c58a-438e-b4c5-4e0b3a1746db/bin-2019/utaipan/data/e82af24dd/b10d25bc9a88424c8735955c926a8775/FLAG7d32ce394 [2018-12-09 13:13:00,069 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6eca045e-c58a-438e-b4c5-4e0b3a1746db/bin-2019/utaipan/data/e82af24dd/b10d25bc9a88424c8735955c926a8775 [2018-12-09 13:13:00,070 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 13:13:00,071 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 13:13:00,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 13:13:00,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 13:13:00,074 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 13:13:00,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:13:00" (1/1) ... [2018-12-09 13:13:00,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31756837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:00, skipping insertion in model container [2018-12-09 13:13:00,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:13:00" (1/1) ... [2018-12-09 13:13:00,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 13:13:00,107 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 13:13:00,244 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 13:13:00,250 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 13:13:00,306 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 13:13:00,332 INFO L195 MainTranslator]: Completed translation [2018-12-09 13:13:00,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:00 WrapperNode [2018-12-09 13:13:00,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 13:13:00,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 13:13:00,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 13:13:00,333 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 13:13:00,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:00" (1/1) ... [2018-12-09 13:13:00,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:00" (1/1) ... [2018-12-09 13:13:00,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 13:13:00,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 13:13:00,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 13:13:00,350 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 13:13:00,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:00" (1/1) ... [2018-12-09 13:13:00,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:00" (1/1) ... [2018-12-09 13:13:00,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:00" (1/1) ... [2018-12-09 13:13:00,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:00" (1/1) ... [2018-12-09 13:13:00,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:00" (1/1) ... [2018-12-09 13:13:00,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:00" (1/1) ... [2018-12-09 13:13:00,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:00" (1/1) ... [2018-12-09 13:13:00,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 13:13:00,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 13:13:00,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 13:13:00,365 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 13:13:00,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6eca045e-c58a-438e-b4c5-4e0b3a1746db/bin-2019/utaipan/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 [2018-12-09 13:13:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure cmemchr [2018-12-09 13:13:00,395 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemchr [2018-12-09 13:13:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 13:13:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 13:13:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 13:13:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 13:13:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 13:13:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 13:13:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 13:13:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 13:13:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 13:13:00,525 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 13:13:00,525 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 13:13:00,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:13:00 BoogieIcfgContainer [2018-12-09 13:13:00,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 13:13:00,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 13:13:00,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 13:13:00,528 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 13:13:00,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:13:00" (1/3) ... [2018-12-09 13:13:00,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc3096d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:13:00, skipping insertion in model container [2018-12-09 13:13:00,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:00" (2/3) ... [2018-12-09 13:13:00,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc3096d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:13:00, skipping insertion in model container [2018-12-09 13:13:00,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:13:00" (3/3) ... [2018-12-09 13:13:00,530 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i [2018-12-09 13:13:00,535 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 13:13:00,539 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-09 13:13:00,548 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-09 13:13:00,563 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 13:13:00,563 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-09 13:13:00,563 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 13:13:00,563 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 13:13:00,563 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 13:13:00,563 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 13:13:00,563 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 13:13:00,563 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 13:13:00,572 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-12-09 13:13:00,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 13:13:00,578 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:00,578 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:13:00,579 INFO L423 AbstractCegarLoop]: === Iteration 1 === [cmemchrErr0REQUIRES_VIOLATION, cmemchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 13:13:00,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:00,583 INFO L82 PathProgramCache]: Analyzing trace with hash 974657, now seen corresponding path program 1 times [2018-12-09 13:13:00,584 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 13:13:00,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:00,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:00,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:00,613 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 13:13:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:00,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:13:00,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:13:00,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 13:13:00,712 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 13:13:00,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 13:13:00,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 13:13:00,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 13:13:00,725 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 7 states. [2018-12-09 13:13:00,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:00,812 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2018-12-09 13:13:00,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 13:13:00,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-12-09 13:13:00,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:00,819 INFO L225 Difference]: With dead ends: 30 [2018-12-09 13:13:00,819 INFO L226 Difference]: Without dead ends: 27 [2018-12-09 13:13:00,821 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-12-09 13:13:00,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-09 13:13:00,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2018-12-09 13:13:00,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-09 13:13:00,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-12-09 13:13:00,842 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2018-12-09 13:13:00,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:00,842 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-12-09 13:13:00,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 13:13:00,843 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-12-09 13:13:00,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 13:13:00,843 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:00,843 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:13:00,844 INFO L423 AbstractCegarLoop]: === Iteration 2 === [cmemchrErr0REQUIRES_VIOLATION, cmemchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 13:13:00,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:00,844 INFO L82 PathProgramCache]: Analyzing trace with hash 974658, now seen corresponding path program 1 times [2018-12-09 13:13:00,844 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 13:13:00,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:00,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:00,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:00,845 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 13:13:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:13:00,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:13:00,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 13:13:00,933 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 13:13:00,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 13:13:00,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 13:13:00,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-12-09 13:13:00,935 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 8 states. [2018-12-09 13:13:01,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:01,002 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2018-12-09 13:13:01,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 13:13:01,002 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-12-09 13:13:01,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:01,003 INFO L225 Difference]: With dead ends: 27 [2018-12-09 13:13:01,003 INFO L226 Difference]: Without dead ends: 27 [2018-12-09 13:13:01,003 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-12-09 13:13:01,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-09 13:13:01,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2018-12-09 13:13:01,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-09 13:13:01,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-12-09 13:13:01,006 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 14 [2018-12-09 13:13:01,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:01,006 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-12-09 13:13:01,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 13:13:01,006 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-12-09 13:13:01,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 13:13:01,006 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:01,006 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:13:01,006 INFO L423 AbstractCegarLoop]: === Iteration 3 === [cmemchrErr0REQUIRES_VIOLATION, cmemchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 13:13:01,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:01,007 INFO L82 PathProgramCache]: Analyzing trace with hash -350246811, now seen corresponding path program 1 times [2018-12-09 13:13:01,007 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 13:13:01,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:01,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:01,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:01,007 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 13:13:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:01,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:13:01,035 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:13:01,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 13:13:01,035 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 13:13:01,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 13:13:01,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 13:13:01,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 13:13:01,036 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2018-12-09 13:13:01,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:01,057 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2018-12-09 13:13:01,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 13:13:01,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-12-09 13:13:01,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:01,059 INFO L225 Difference]: With dead ends: 38 [2018-12-09 13:13:01,059 INFO L226 Difference]: Without dead ends: 38 [2018-12-09 13:13:01,059 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 13:13:01,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-09 13:13:01,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2018-12-09 13:13:01,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-09 13:13:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2018-12-09 13:13:01,065 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 17 [2018-12-09 13:13:01,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:01,065 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2018-12-09 13:13:01,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 13:13:01,065 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2018-12-09 13:13:01,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 13:13:01,066 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:01,066 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:13:01,066 INFO L423 AbstractCegarLoop]: === Iteration 4 === [cmemchrErr0REQUIRES_VIOLATION, cmemchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 13:13:01,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:01,066 INFO L82 PathProgramCache]: Analyzing trace with hash -743273821, now seen corresponding path program 1 times [2018-12-09 13:13:01,066 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 13:13:01,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:01,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:01,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:01,067 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 13:13:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:01,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:13:01,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:13:01,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 13:13:01,099 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 13:13:01,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 13:13:01,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 13:13:01,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 13:13:01,100 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 4 states. [2018-12-09 13:13:01,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:01,126 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2018-12-09 13:13:01,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 13:13:01,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-12-09 13:13:01,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:01,127 INFO L225 Difference]: With dead ends: 30 [2018-12-09 13:13:01,127 INFO L226 Difference]: Without dead ends: 22 [2018-12-09 13:13:01,127 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 13:13:01,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-12-09 13:13:01,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-12-09 13:13:01,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-09 13:13:01,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-12-09 13:13:01,129 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2018-12-09 13:13:01,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:01,129 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-12-09 13:13:01,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 13:13:01,129 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-12-09 13:13:01,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 13:13:01,130 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:01,130 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:13:01,130 INFO L423 AbstractCegarLoop]: === Iteration 5 === [cmemchrErr0REQUIRES_VIOLATION, cmemchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 13:13:01,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:01,130 INFO L82 PathProgramCache]: Analyzing trace with hash -815298698, now seen corresponding path program 1 times [2018-12-09 13:13:01,130 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 13:13:01,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:01,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:01,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:01,131 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 13:13:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:01,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:13:01,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:13:01,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 13:13:01,222 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 13:13:01,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 13:13:01,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 13:13:01,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-12-09 13:13:01,222 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 7 states. [2018-12-09 13:13:01,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:01,254 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-12-09 13:13:01,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 13:13:01,255 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-12-09 13:13:01,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:01,255 INFO L225 Difference]: With dead ends: 29 [2018-12-09 13:13:01,255 INFO L226 Difference]: Without dead ends: 20 [2018-12-09 13:13:01,256 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-12-09 13:13:01,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-12-09 13:13:01,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-12-09 13:13:01,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-09 13:13:01,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-12-09 13:13:01,257 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 19 [2018-12-09 13:13:01,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:01,258 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-12-09 13:13:01,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 13:13:01,258 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-12-09 13:13:01,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 13:13:01,258 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:01,258 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:13:01,258 INFO L423 AbstractCegarLoop]: === Iteration 6 === [cmemchrErr0REQUIRES_VIOLATION, cmemchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 13:13:01,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:01,258 INFO L82 PathProgramCache]: Analyzing trace with hash -557133260, now seen corresponding path program 1 times [2018-12-09 13:13:01,259 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 13:13:01,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:01,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:01,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:01,259 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 13:13:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:13:01,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 13:13:01,403 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 13:13:01,403 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-12-09 13:13:01,405 INFO L205 CegarAbsIntRunner]: [0], [3], [7], [8], [10], [14], [16], [21], [30], [31], [35], [38], [46], [48], [53], [54], [55], [57] [2018-12-09 13:13:01,427 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 13:13:01,427 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 13:13:01,526 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 13:13:01,527 INFO L272 AbstractInterpreter]: Visited 18 different actions 23 times. Merged at 5 different actions 5 times. Never widened. Performed 176 root evaluator evaluations with a maximum evaluation depth of 4. Performed 176 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-12-09 13:13:01,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:01,534 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 13:13:01,534 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 13:13:01,535 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6eca045e-c58a-438e-b4c5-4e0b3a1746db/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 13:13:01,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:01,541 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 13:13:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:01,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:13:01,587 INFO L478 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 [2018-12-09 13:13:01,589 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 13:13:01,593 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:13:01,593 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-09 13:13:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:13:01,766 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 13:13:01,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:13:02,005 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 13:13:02,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2018-12-09 13:13:02,005 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 13:13:02,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-12-09 13:13:02,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-12-09 13:13:02,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=771, Unknown=0, NotChecked=0, Total=870 [2018-12-09 13:13:02,006 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 21 states. [2018-12-09 13:13:02,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:02,344 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-12-09 13:13:02,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 13:13:02,344 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 19 [2018-12-09 13:13:02,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:02,345 INFO L225 Difference]: With dead ends: 26 [2018-12-09 13:13:02,345 INFO L226 Difference]: Without dead ends: 26 [2018-12-09 13:13:02,345 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=192, Invalid=1214, Unknown=0, NotChecked=0, Total=1406 [2018-12-09 13:13:02,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-09 13:13:02,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-12-09 13:13:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-12-09 13:13:02,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-12-09 13:13:02,347 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 19 [2018-12-09 13:13:02,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:02,347 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-12-09 13:13:02,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-12-09 13:13:02,347 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-12-09 13:13:02,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 13:13:02,348 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:02,348 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:13:02,348 INFO L423 AbstractCegarLoop]: === Iteration 7 === [cmemchrErr0REQUIRES_VIOLATION, cmemchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 13:13:02,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:02,348 INFO L82 PathProgramCache]: Analyzing trace with hash 2135399364, now seen corresponding path program 2 times [2018-12-09 13:13:02,348 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 13:13:02,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:02,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:02,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:02,349 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 13:13:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:02,522 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:13:02,522 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 13:13:02,522 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 13:13:02,522 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 13:13:02,522 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 13:13:02,522 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 13:13:02,522 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6eca045e-c58a-438e-b4c5-4e0b3a1746db/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 13:13:02,528 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 13:13:02,529 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 13:13:02,542 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-09 13:13:02,542 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 13:13:02,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:13:02,547 INFO L478 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 [2018-12-09 13:13:02,547 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 13:13:02,549 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 13:13:02,550 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-09 13:13:02,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:13:02,691 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 13:13:02,977 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:13:02,996 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 13:13:02,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2018-12-09 13:13:02,996 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 13:13:02,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-12-09 13:13:02,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-12-09 13:13:02,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2018-12-09 13:13:02,997 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 21 states. [2018-12-09 13:13:03,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:03,682 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-12-09 13:13:03,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-12-09 13:13:03,683 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24 [2018-12-09 13:13:03,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:03,684 INFO L225 Difference]: With dead ends: 30 [2018-12-09 13:13:03,684 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 13:13:03,685 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=274, Invalid=1888, Unknown=0, NotChecked=0, Total=2162 [2018-12-09 13:13:03,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 13:13:03,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 13:13:03,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 13:13:03,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 13:13:03,686 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-12-09 13:13:03,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:03,687 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 13:13:03,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-12-09 13:13:03,687 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 13:13:03,687 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 13:13:03,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:13:03 BoogieIcfgContainer [2018-12-09 13:13:03,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 13:13:03,696 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 13:13:03,696 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 13:13:03,696 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 13:13:03,697 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:13:00" (3/4) ... [2018-12-09 13:13:03,702 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 13:13:03,710 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cmemchr [2018-12-09 13:13:03,710 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 13:13:03,711 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 13:13:03,715 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2018-12-09 13:13:03,715 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-09 13:13:03,715 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 13:13:03,743 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6eca045e-c58a-438e-b4c5-4e0b3a1746db/bin-2019/utaipan/witness.graphml [2018-12-09 13:13:03,743 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 13:13:03,743 INFO L168 Benchmark]: Toolchain (without parser) took 3672.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 220.2 MB). Free memory was 948.1 MB in the beginning and 893.6 MB in the end (delta: 54.5 MB). Peak memory consumption was 274.7 MB. Max. memory is 11.5 GB. [2018-12-09 13:13:03,744 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 13:13:03,744 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -172.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-12-09 13:13:03,745 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 13:13:03,745 INFO L168 Benchmark]: Boogie Preprocessor took 14.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 13:13:03,745 INFO L168 Benchmark]: RCFGBuilder took 160.80 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: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2018-12-09 13:13:03,746 INFO L168 Benchmark]: TraceAbstraction took 3169.02 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 83.9 MB). Free memory was 1.1 GB in the beginning and 901.8 MB in the end (delta: 199.8 MB). Peak memory consumption was 283.7 MB. Max. memory is 11.5 GB. [2018-12-09 13:13:03,746 INFO L168 Benchmark]: Witness Printer took 47.32 ms. Allocated memory is still 1.2 GB. Free memory was 901.8 MB in the beginning and 893.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2018-12-09 13:13:03,748 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 261.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -172.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 160.80 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: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3169.02 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 83.9 MB). Free memory was 1.1 GB in the beginning and 901.8 MB in the end (delta: 199.8 MB). Peak memory consumption was 283.7 MB. Max. memory is 11.5 GB. * Witness Printer took 47.32 ms. Allocated memory is still 1.2 GB. Free memory was 901.8 MB in the beginning and 893.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 552]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 3 error locations. SAFE Result, 3.1s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 136 SDtfs, 160 SDslu, 652 SDs, 0 SdLazy, 538 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 14 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 199 ConstructedInterpolants, 2 QuantifiedInterpolants, 35317 SizeOfPredicates, 24 NumberOfNonLiveVariables, 228 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 2/35 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...