./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6853fb9e064ccfef5e54a8bac94eb86beeed80f ...................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:10:16,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:10:16,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:10:16,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:10:16,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:10:16,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:10:16,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:10:16,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:10:16,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:10:16,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:10:16,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:10:16,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:10:16,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:10:16,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:10:16,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:10:16,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:10:16,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:10:16,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:10:16,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:10:16,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:10:16,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:10:16,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:10:16,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:10:16,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:10:16,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:10:16,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:10:16,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:10:16,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:10:16,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:10:16,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:10:16,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:10:16,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:10:16,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:10:16,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:10:16,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:10:16,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:10:16,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:10:16,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:10:16,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:10:16,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:10:16,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:10:16,223 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 20:10:16,248 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:10:16,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:10:16,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:10:16,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:10:16,250 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:10:16,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:10:16,251 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:10:16,251 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:10:16,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:10:16,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:10:16,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:10:16,252 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 20:10:16,252 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 20:10:16,253 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 20:10:16,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:10:16,253 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 20:10:16,254 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:10:16,254 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:10:16,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:10:16,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:10:16,255 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:10:16,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:10:16,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:10:16,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:10:16,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:10:16,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:10:16,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:10:16,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:10:16,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6853fb9e064ccfef5e54a8bac94eb86beeed80f [2019-11-28 20:10:16,577 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:10:16,594 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:10:16,600 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:10:16,601 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:10:16,602 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:10:16,603 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2019-11-28 20:10:16,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57373daed/5cf2c12e0c5d400ebd41fdd5508b7eee/FLAG37f79c143 [2019-11-28 20:10:17,146 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:10:17,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2019-11-28 20:10:17,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57373daed/5cf2c12e0c5d400ebd41fdd5508b7eee/FLAG37f79c143 [2019-11-28 20:10:17,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57373daed/5cf2c12e0c5d400ebd41fdd5508b7eee [2019-11-28 20:10:17,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:10:17,521 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 20:10:17,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:10:17,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:10:17,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:10:17,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:10:17" (1/1) ... [2019-11-28 20:10:17,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33138635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:10:17, skipping insertion in model container [2019-11-28 20:10:17,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:10:17" (1/1) ... [2019-11-28 20:10:17,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:10:17,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:10:17,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:10:17,749 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:10:17,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:10:17,786 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:10:17,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:10:17 WrapperNode [2019-11-28 20:10:17,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:10:17,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:10:17,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:10:17,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:10:17,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:10:17" (1/1) ... [2019-11-28 20:10:17,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:10:17" (1/1) ... [2019-11-28 20:10:17,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:10:17" (1/1) ... [2019-11-28 20:10:17,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:10:17" (1/1) ... [2019-11-28 20:10:17,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:10:17" (1/1) ... [2019-11-28 20:10:17,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:10:17" (1/1) ... [2019-11-28 20:10:17,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:10:17" (1/1) ... [2019-11-28 20:10:17,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:10:17,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:10:17,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:10:17,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:10:17,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:10:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:10:17,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 20:10:17,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:10:17,948 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2019-11-28 20:10:17,949 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-11-28 20:10:17,949 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 20:10:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2019-11-28 20:10:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 20:10:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-11-28 20:10:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 20:10:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 20:10:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 20:10:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 20:10:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 20:10:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:10:18,330 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:10:18,331 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 20:10:18,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:10:18 BoogieIcfgContainer [2019-11-28 20:10:18,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:10:18,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:10:18,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:10:18,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:10:18,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:10:17" (1/3) ... [2019-11-28 20:10:18,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1186013e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:10:18, skipping insertion in model container [2019-11-28 20:10:18,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:10:17" (2/3) ... [2019-11-28 20:10:18,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1186013e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:10:18, skipping insertion in model container [2019-11-28 20:10:18,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:10:18" (3/3) ... [2019-11-28 20:10:18,348 INFO L109 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_-write.c [2019-11-28 20:10:18,357 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:10:18,364 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2019-11-28 20:10:18,376 INFO L249 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2019-11-28 20:10:18,396 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:10:18,397 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 20:10:18,397 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:10:18,397 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:10:18,397 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:10:18,397 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:10:18,398 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:10:18,398 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:10:18,413 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2019-11-28 20:10:18,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 20:10:18,422 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:10:18,423 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:10:18,423 INFO L410 AbstractCegarLoop]: === Iteration 1 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:10:18,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:10:18,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1403638412, now seen corresponding path program 1 times [2019-11-28 20:10:18,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:10:18,435 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866262145] [2019-11-28 20:10:18,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:10:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:10:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:10:18,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:10:18,604 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866262145] [2019-11-28 20:10:18,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:10:18,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:10:18,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230756795] [2019-11-28 20:10:18,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:10:18,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:10:18,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:10:18,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:10:18,632 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2019-11-28 20:10:18,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:10:18,827 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2019-11-28 20:10:18,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:10:18,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-28 20:10:18,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:10:18,845 INFO L225 Difference]: With dead ends: 52 [2019-11-28 20:10:18,845 INFO L226 Difference]: Without dead ends: 49 [2019-11-28 20:10:18,850 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:10:18,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-28 20:10:18,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2019-11-28 20:10:18,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-28 20:10:18,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2019-11-28 20:10:18,909 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 10 [2019-11-28 20:10:18,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:10:18,909 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2019-11-28 20:10:18,910 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:10:18,910 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2019-11-28 20:10:18,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 20:10:18,911 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:10:18,912 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:10:18,913 INFO L410 AbstractCegarLoop]: === Iteration 2 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:10:18,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:10:18,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1403995904, now seen corresponding path program 1 times [2019-11-28 20:10:18,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:10:18,916 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329073706] [2019-11-28 20:10:18,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:10:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:10:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:10:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:10:19,034 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329073706] [2019-11-28 20:10:19,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:10:19,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:10:19,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013251544] [2019-11-28 20:10:19,040 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:10:19,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:10:19,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:10:19,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:10:19,043 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 4 states. [2019-11-28 20:10:19,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:10:19,198 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2019-11-28 20:10:19,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:10:19,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 20:10:19,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:10:19,203 INFO L225 Difference]: With dead ends: 56 [2019-11-28 20:10:19,203 INFO L226 Difference]: Without dead ends: 56 [2019-11-28 20:10:19,204 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:10:19,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-28 20:10:19,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2019-11-28 20:10:19,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-28 20:10:19,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2019-11-28 20:10:19,232 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 10 [2019-11-28 20:10:19,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:10:19,232 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2019-11-28 20:10:19,232 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:10:19,233 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2019-11-28 20:10:19,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 20:10:19,235 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:10:19,235 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:10:19,236 INFO L410 AbstractCegarLoop]: === Iteration 3 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:10:19,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:10:19,237 INFO L82 PathProgramCache]: Analyzing trace with hash -571487811, now seen corresponding path program 1 times [2019-11-28 20:10:19,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:10:19,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580360014] [2019-11-28 20:10:19,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:10:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:10:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:10:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:10:19,417 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580360014] [2019-11-28 20:10:19,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:10:19,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 20:10:19,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048377984] [2019-11-28 20:10:19,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 20:10:19,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:10:19,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 20:10:19,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:10:19,422 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2019-11-28 20:10:19,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:10:19,623 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2019-11-28 20:10:19,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:10:19,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-28 20:10:19,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:10:19,627 INFO L225 Difference]: With dead ends: 47 [2019-11-28 20:10:19,628 INFO L226 Difference]: Without dead ends: 47 [2019-11-28 20:10:19,630 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:10:19,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-28 20:10:19,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-11-28 20:10:19,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-28 20:10:19,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2019-11-28 20:10:19,640 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 11 [2019-11-28 20:10:19,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:10:19,640 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2019-11-28 20:10:19,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 20:10:19,641 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2019-11-28 20:10:19,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 20:10:19,642 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:10:19,642 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:10:19,643 INFO L410 AbstractCegarLoop]: === Iteration 4 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:10:19,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:10:19,643 INFO L82 PathProgramCache]: Analyzing trace with hash -571487810, now seen corresponding path program 1 times [2019-11-28 20:10:19,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:10:19,645 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017668055] [2019-11-28 20:10:19,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:10:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:10:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:10:19,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:10:19,844 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017668055] [2019-11-28 20:10:19,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:10:19,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 20:10:19,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948152552] [2019-11-28 20:10:19,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 20:10:19,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:10:19,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 20:10:19,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:10:19,848 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 7 states. [2019-11-28 20:10:20,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:10:20,180 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2019-11-28 20:10:20,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 20:10:20,181 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-11-28 20:10:20,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:10:20,185 INFO L225 Difference]: With dead ends: 72 [2019-11-28 20:10:20,186 INFO L226 Difference]: Without dead ends: 72 [2019-11-28 20:10:20,186 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:10:20,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-11-28 20:10:20,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2019-11-28 20:10:20,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-28 20:10:20,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2019-11-28 20:10:20,197 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 11 [2019-11-28 20:10:20,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:10:20,198 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2019-11-28 20:10:20,198 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 20:10:20,198 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2019-11-28 20:10:20,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 20:10:20,202 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:10:20,203 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:10:20,203 INFO L410 AbstractCegarLoop]: === Iteration 5 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:10:20,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:10:20,204 INFO L82 PathProgramCache]: Analyzing trace with hash -536252953, now seen corresponding path program 1 times [2019-11-28 20:10:20,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:10:20,205 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549545722] [2019-11-28 20:10:20,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:10:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:10:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:10:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:10:20,293 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549545722] [2019-11-28 20:10:20,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:10:20,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:10:20,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632758493] [2019-11-28 20:10:20,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:10:20,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:10:20,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:10:20,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:10:20,298 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 4 states. [2019-11-28 20:10:20,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:10:20,410 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2019-11-28 20:10:20,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:10:20,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-28 20:10:20,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:10:20,412 INFO L225 Difference]: With dead ends: 55 [2019-11-28 20:10:20,412 INFO L226 Difference]: Without dead ends: 55 [2019-11-28 20:10:20,414 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:10:20,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-28 20:10:20,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-11-28 20:10:20,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-28 20:10:20,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2019-11-28 20:10:20,428 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 12 [2019-11-28 20:10:20,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:10:20,429 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2019-11-28 20:10:20,429 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:10:20,430 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2019-11-28 20:10:20,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 20:10:20,431 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:10:20,431 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:10:20,432 INFO L410 AbstractCegarLoop]: === Iteration 6 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:10:20,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:10:20,432 INFO L82 PathProgramCache]: Analyzing trace with hash -536252952, now seen corresponding path program 1 times [2019-11-28 20:10:20,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:10:20,434 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796831741] [2019-11-28 20:10:20,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:10:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:10:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:10:20,523 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:10:20,524 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 20:10:20,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:10:20 BoogieIcfgContainer [2019-11-28 20:10:20,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:10:20,550 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:10:20,550 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:10:20,550 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:10:20,550 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:10:18" (3/4) ... [2019-11-28 20:10:20,553 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 20:10:20,602 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:10:20,602 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:10:20,605 INFO L168 Benchmark]: Toolchain (without parser) took 3083.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 949.6 MB in the beginning and 928.2 MB in the end (delta: 21.4 MB). Peak memory consumption was 152.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:10:20,605 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:10:20,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.04 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 938.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:10:20,607 INFO L168 Benchmark]: Boogie Preprocessor took 102.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 938.9 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:10:20,608 INFO L168 Benchmark]: RCFGBuilder took 443.90 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: 31.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 11.5 GB. [2019-11-28 20:10:20,610 INFO L168 Benchmark]: TraceAbstraction took 2213.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 934.9 MB in the end (delta: 154.8 MB). Peak memory consumption was 154.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:10:20,616 INFO L168 Benchmark]: Witness Printer took 52.94 ms. Allocated memory is still 1.2 GB. Free memory was 934.9 MB in the beginning and 928.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:10:20,626 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 266.04 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 938.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 102.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 938.9 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 443.90 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: 31.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2213.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 934.9 MB in the end (delta: 154.8 MB). Peak memory consumption was 154.8 MB. Max. memory is 11.5 GB. * Witness Printer took 52.94 ms. Allocated memory is still 1.2 GB. Free memory was 934.9 MB in the beginning and 928.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 23]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; [L33] i = 0 VAL [b={3:0}, i=0] [L33] COND TRUE i < 100 VAL [b={3:0}, i=0] [L34] CALL foo(i, b, i + 1) VAL [\old(n)=0, \old(size)=1, b={3:0}] [L21] int a[n], i; [L22] i = 0 VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=1] [L22] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=1] [L23] EXPR b[i] VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, 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. Result: UNSAFE, OverallTime: 2.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 199 SDtfs, 126 SDslu, 177 SDs, 0 SdLazy, 483 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s 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 DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 2004 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...