./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_42b75581-8adf-461a-9f5c-5245b49431e6/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_42b75581-8adf-461a-9f5c-5245b49431e6/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_42b75581-8adf-461a-9f5c-5245b49431e6/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_42b75581-8adf-461a-9f5c-5245b49431e6/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c -s /tmp/vcloud-vcloud-master/worker/working_dir_42b75581-8adf-461a-9f5c-5245b49431e6/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_42b75581-8adf-461a-9f5c-5245b49431e6/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 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 0.1.23-635dfa2 [2018-12-09 01:08:46,460 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 01:08:46,461 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 01:08:46,467 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 01:08:46,467 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 01:08:46,468 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 01:08:46,469 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 01:08:46,469 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 01:08:46,470 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 01:08:46,471 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 01:08:46,471 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 01:08:46,471 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 01:08:46,472 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 01:08:46,472 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 01:08:46,473 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 01:08:46,473 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 01:08:46,474 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 01:08:46,474 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 01:08:46,475 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 01:08:46,476 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 01:08:46,477 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 01:08:46,477 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 01:08:46,478 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 01:08:46,479 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 01:08:46,479 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 01:08:46,479 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 01:08:46,480 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 01:08:46,480 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 01:08:46,481 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 01:08:46,481 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 01:08:46,481 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 01:08:46,482 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 01:08:46,482 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 01:08:46,482 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 01:08:46,482 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 01:08:46,483 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 01:08:46,483 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_42b75581-8adf-461a-9f5c-5245b49431e6/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-09 01:08:46,490 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 01:08:46,490 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 01:08:46,491 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 01:08:46,491 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 01:08:46,491 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 01:08:46,491 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 01:08:46,491 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 01:08:46,491 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 01:08:46,491 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 01:08:46,491 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 01:08:46,492 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 01:08:46,492 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 01:08:46,492 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 01:08:46,492 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 01:08:46,492 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 01:08:46,492 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 01:08:46,492 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 01:08:46,492 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 01:08:46,493 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 01:08:46,493 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 01:08:46,493 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 01:08:46,493 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 01:08:46,493 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 01:08:46,493 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 01:08:46,493 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 01:08:46,493 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 01:08:46,493 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 01:08:46,493 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 01:08:46,493 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 01:08:46,494 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 01:08:46,494 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 01:08:46,494 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 01:08:46,494 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 01:08:46,494 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 01:08:46,494 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 01:08:46,494 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 01:08:46,494 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_42b75581-8adf-461a-9f5c-5245b49431e6/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 -> a6853fb9e064ccfef5e54a8bac94eb86beeed80f [2018-12-09 01:08:46,512 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 01:08:46,518 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 01:08:46,520 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 01:08:46,521 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 01:08:46,521 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 01:08:46,522 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_42b75581-8adf-461a-9f5c-5245b49431e6/bin-2019/utaipan/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c [2018-12-09 01:08:46,555 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_42b75581-8adf-461a-9f5c-5245b49431e6/bin-2019/utaipan/data/1868a7d7d/da82c34308e341c3b7502bbb4be8b572/FLAGbc03d0e91 [2018-12-09 01:08:46,984 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 01:08:46,984 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_42b75581-8adf-461a-9f5c-5245b49431e6/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c [2018-12-09 01:08:46,988 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_42b75581-8adf-461a-9f5c-5245b49431e6/bin-2019/utaipan/data/1868a7d7d/da82c34308e341c3b7502bbb4be8b572/FLAGbc03d0e91 [2018-12-09 01:08:46,996 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_42b75581-8adf-461a-9f5c-5245b49431e6/bin-2019/utaipan/data/1868a7d7d/da82c34308e341c3b7502bbb4be8b572 [2018-12-09 01:08:46,997 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 01:08:46,998 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 01:08:46,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 01:08:46,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 01:08:47,001 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 01:08:47,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:08:46" (1/1) ... [2018-12-09 01:08:47,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cf0b28c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:47, skipping insertion in model container [2018-12-09 01:08:47,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:08:46" (1/1) ... [2018-12-09 01:08:47,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 01:08:47,015 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 01:08:47,103 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:08:47,108 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 01:08:47,119 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:08:47,128 INFO L195 MainTranslator]: Completed translation [2018-12-09 01:08:47,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:47 WrapperNode [2018-12-09 01:08:47,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 01:08:47,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 01:08:47,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 01:08:47,129 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 01:08:47,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:47" (1/1) ... [2018-12-09 01:08:47,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:47" (1/1) ... [2018-12-09 01:08:47,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 01:08:47,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 01:08:47,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 01:08:47,143 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 01:08:47,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:47" (1/1) ... [2018-12-09 01:08:47,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:47" (1/1) ... [2018-12-09 01:08:47,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:47" (1/1) ... [2018-12-09 01:08:47,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:47" (1/1) ... [2018-12-09 01:08:47,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:47" (1/1) ... [2018-12-09 01:08:47,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:47" (1/1) ... [2018-12-09 01:08:47,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:47" (1/1) ... [2018-12-09 01:08:47,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 01:08:47,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 01:08:47,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 01:08:47,189 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 01:08:47,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_42b75581-8adf-461a-9f5c-5245b49431e6/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 01:08:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 01:08:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2018-12-09 01:08:47,221 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2018-12-09 01:08:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 01:08:47,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 01:08:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 01:08:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-12-09 01:08:47,222 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-12-09 01:08:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 01:08:47,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 01:08:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 01:08:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 01:08:47,222 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 01:08:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 01:08:47,376 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 01:08:47,376 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 01:08:47,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:08:47 BoogieIcfgContainer [2018-12-09 01:08:47,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 01:08:47,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 01:08:47,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 01:08:47,380 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 01:08:47,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:08:46" (1/3) ... [2018-12-09 01:08:47,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4435b5cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:08:47, skipping insertion in model container [2018-12-09 01:08:47,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:47" (2/3) ... [2018-12-09 01:08:47,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4435b5cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:08:47, skipping insertion in model container [2018-12-09 01:08:47,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:08:47" (3/3) ... [2018-12-09 01:08:47,383 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_false-valid-deref-write.c [2018-12-09 01:08:47,392 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 01:08:47,397 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-12-09 01:08:47,407 INFO L257 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2018-12-09 01:08:47,429 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 01:08:47,429 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-09 01:08:47,429 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 01:08:47,429 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 01:08:47,429 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 01:08:47,429 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 01:08:47,429 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 01:08:47,429 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 01:08:47,440 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2018-12-09 01:08:47,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 01:08:47,445 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:08:47,446 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:08:47,447 INFO L423 AbstractCegarLoop]: === Iteration 1 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2018-12-09 01:08:47,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:47,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1403638412, now seen corresponding path program 1 times [2018-12-09 01:08:47,452 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:08:47,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:47,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:08:47,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:47,485 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:08:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:08:47,525 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 01:08:47,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:08:47,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 01:08:47,527 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:08:47,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 01:08:47,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 01:08:47,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 01:08:47,538 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2018-12-09 01:08:47,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:08:47,549 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2018-12-09 01:08:47,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 01:08:47,549 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-09 01:08:47,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:08:47,555 INFO L225 Difference]: With dead ends: 52 [2018-12-09 01:08:47,555 INFO L226 Difference]: Without dead ends: 49 [2018-12-09 01:08:47,556 INFO L631 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 [2018-12-09 01:08:47,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-12-09 01:08:47,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-12-09 01:08:47,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-12-09 01:08:47,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2018-12-09 01:08:47,578 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 10 [2018-12-09 01:08:47,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:08:47,578 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2018-12-09 01:08:47,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 01:08:47,578 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2018-12-09 01:08:47,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 01:08:47,579 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:08:47,579 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:08:47,579 INFO L423 AbstractCegarLoop]: === Iteration 2 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2018-12-09 01:08:47,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:47,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1403995904, now seen corresponding path program 1 times [2018-12-09 01:08:47,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:08:47,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:47,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:08:47,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:47,581 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:08:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:08:47,609 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 01:08:47,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:08:47,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 01:08:47,610 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:08:47,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 01:08:47,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 01:08:47,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 01:08:47,611 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 3 states. [2018-12-09 01:08:47,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:08:47,647 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2018-12-09 01:08:47,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 01:08:47,647 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-09 01:08:47,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:08:47,649 INFO L225 Difference]: With dead ends: 56 [2018-12-09 01:08:47,650 INFO L226 Difference]: Without dead ends: 56 [2018-12-09 01:08:47,650 INFO L631 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 [2018-12-09 01:08:47,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-12-09 01:08:47,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2018-12-09 01:08:47,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-12-09 01:08:47,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2018-12-09 01:08:47,656 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 10 [2018-12-09 01:08:47,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:08:47,656 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2018-12-09 01:08:47,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 01:08:47,656 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2018-12-09 01:08:47,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 01:08:47,657 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:08:47,657 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:08:47,657 INFO L423 AbstractCegarLoop]: === Iteration 3 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2018-12-09 01:08:47,657 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:47,657 INFO L82 PathProgramCache]: Analyzing trace with hash -571487811, now seen corresponding path program 1 times [2018-12-09 01:08:47,657 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:08:47,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:47,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:08:47,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:47,658 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:08:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:08:47,726 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 01:08:47,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:08:47,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 01:08:47,727 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:08:47,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 01:08:47,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 01:08:47,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:08:47,727 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 5 states. [2018-12-09 01:08:47,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:08:47,774 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2018-12-09 01:08:47,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 01:08:47,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-12-09 01:08:47,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:08:47,775 INFO L225 Difference]: With dead ends: 47 [2018-12-09 01:08:47,775 INFO L226 Difference]: Without dead ends: 47 [2018-12-09 01:08:47,775 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 01:08:47,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-12-09 01:08:47,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-12-09 01:08:47,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-12-09 01:08:47,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2018-12-09 01:08:47,778 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 11 [2018-12-09 01:08:47,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:08:47,778 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2018-12-09 01:08:47,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 01:08:47,778 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2018-12-09 01:08:47,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 01:08:47,779 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:08:47,779 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:08:47,779 INFO L423 AbstractCegarLoop]: === Iteration 4 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2018-12-09 01:08:47,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:47,779 INFO L82 PathProgramCache]: Analyzing trace with hash -571487810, now seen corresponding path program 1 times [2018-12-09 01:08:47,779 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:08:47,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:47,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:08:47,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:47,780 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:08:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:08:47,826 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 01:08:47,826 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:08:47,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 01:08:47,826 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:08:47,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 01:08:47,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 01:08:47,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:08:47,827 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 5 states. [2018-12-09 01:08:47,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:08:47,925 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2018-12-09 01:08:47,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 01:08:47,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-12-09 01:08:47,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:08:47,928 INFO L225 Difference]: With dead ends: 72 [2018-12-09 01:08:47,928 INFO L226 Difference]: Without dead ends: 72 [2018-12-09 01:08:47,928 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 01:08:47,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-12-09 01:08:47,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2018-12-09 01:08:47,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-12-09 01:08:47,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2018-12-09 01:08:47,935 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 11 [2018-12-09 01:08:47,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:08:47,935 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2018-12-09 01:08:47,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 01:08:47,935 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2018-12-09 01:08:47,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 01:08:47,936 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:08:47,936 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:08:47,936 INFO L423 AbstractCegarLoop]: === Iteration 5 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2018-12-09 01:08:47,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:47,937 INFO L82 PathProgramCache]: Analyzing trace with hash -536252953, now seen corresponding path program 1 times [2018-12-09 01:08:47,937 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:08:47,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:47,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:08:47,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:47,938 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:08:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:08:47,960 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 01:08:47,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:08:47,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 01:08:47,961 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:08:47,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 01:08:47,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 01:08:47,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 01:08:47,961 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 3 states. [2018-12-09 01:08:47,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:08:47,985 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2018-12-09 01:08:47,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 01:08:47,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-12-09 01:08:47,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:08:47,986 INFO L225 Difference]: With dead ends: 55 [2018-12-09 01:08:47,986 INFO L226 Difference]: Without dead ends: 55 [2018-12-09 01:08:47,986 INFO L631 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 [2018-12-09 01:08:47,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-12-09 01:08:47,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-12-09 01:08:47,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-12-09 01:08:47,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2018-12-09 01:08:47,989 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 12 [2018-12-09 01:08:47,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:08:47,989 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2018-12-09 01:08:47,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 01:08:47,989 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2018-12-09 01:08:47,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 01:08:47,989 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:08:47,989 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:08:47,990 INFO L423 AbstractCegarLoop]: === Iteration 6 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2018-12-09 01:08:47,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:47,990 INFO L82 PathProgramCache]: Analyzing trace with hash -536252952, now seen corresponding path program 1 times [2018-12-09 01:08:47,990 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:08:47,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:47,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:08:47,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:47,991 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:08:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:48,017 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 01:08:48,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:08:48 BoogieIcfgContainer [2018-12-09 01:08:48,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 01:08:48,032 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 01:08:48,032 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 01:08:48,033 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 01:08:48,033 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:08:47" (3/4) ... [2018-12-09 01:08:48,034 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 01:08:48,057 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_42b75581-8adf-461a-9f5c-5245b49431e6/bin-2019/utaipan/witness.graphml [2018-12-09 01:08:48,057 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 01:08:48,058 INFO L168 Benchmark]: Toolchain (without parser) took 1060.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 958.8 MB in the beginning and 998.7 MB in the end (delta: -39.9 MB). Peak memory consumption was 81.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:08:48,059 INFO L168 Benchmark]: CDTParser took 0.12 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 01:08:48,059 INFO L168 Benchmark]: CACSL2BoogieTranslator took 129.96 ms. Allocated memory is still 1.0 GB. Free memory was 958.8 MB in the beginning and 948.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:08:48,059 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.64 ms. Allocated memory is still 1.0 GB. Free memory is still 948.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:08:48,059 INFO L168 Benchmark]: Boogie Preprocessor took 45.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. [2018-12-09 01:08:48,060 INFO L168 Benchmark]: RCFGBuilder took 187.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2018-12-09 01:08:48,060 INFO L168 Benchmark]: TraceAbstraction took 655.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 998.7 MB in the end (delta: 95.4 MB). Peak memory consumption was 95.4 MB. Max. memory is 11.5 GB. [2018-12-09 01:08:48,060 INFO L168 Benchmark]: Witness Printer took 25.10 ms. Allocated memory is still 1.2 GB. Free memory is still 998.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:08:48,062 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 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 129.96 ms. Allocated memory is still 1.0 GB. Free memory was 958.8 MB in the beginning and 948.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.64 ms. Allocated memory is still 1.0 GB. Free memory is still 948.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 187.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 655.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 998.7 MB in the end (delta: 95.4 MB). Peak memory consumption was 95.4 MB. Max. memory is 11.5 GB. * Witness Printer took 25.10 ms. Allocated memory is still 1.2 GB. Free memory is still 998.7 MB. There was no memory consumed. 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]; [L33] i = 0 VAL [b={404:0}, i=0] [L33] COND TRUE i < 100 VAL [b={404:0}, i=0] [L34] CALL foo(i, b, i + 1) VAL [\old(n)=0, \old(size)=1, b={404:0}] [L21] int a[n], i; [L22] i = 0 VAL [\old(n)=0, \old(size)=1, a={403:0}, b={404:0}, b={404:0}, i=0, n=0, size=1] [L22] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, a={403:0}, b={404:0}, b={404:0}, i=0, n=0, size=1] [L23] EXPR b[i] VAL [\old(n)=0, \old(size)=1, a={403:0}, b={404:0}, b={404:0}, b[i]=402, i=0, n=0, size=1] [L23] a[i] = b[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 52 locations, 11 error locations. UNSAFE Result, 0.6s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 227 SDtfs, 75 SDslu, 214 SDs, 0 SdLazy, 169 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred 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, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 1443 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...