./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 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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 0.1.25-9a8b2e8 [2020-10-20 05:59:28,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:59:28,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:59:28,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:59:28,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:59:28,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:59:28,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:59:28,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:59:28,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:59:28,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:59:28,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:59:28,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:59:28,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:59:28,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:59:28,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:59:28,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:59:28,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:59:28,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:59:28,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:59:28,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:59:28,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:59:28,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:59:28,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:59:28,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:59:28,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:59:28,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:59:28,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:59:28,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:59:28,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:59:28,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:59:28,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:59:28,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:59:28,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:59:28,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:59:28,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:59:28,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:59:28,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:59:28,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:59:28,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:59:28,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:59:28,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:59:28,774 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 05:59:28,811 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:59:28,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:59:28,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:59:28,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:59:28,814 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:59:28,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:59:28,815 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:59:28,815 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:59:28,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:59:28,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:59:28,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:59:28,817 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:59:28,817 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:59:28,817 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:59:28,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:59:28,818 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:59:28,818 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:59:28,818 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:59:28,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:59:28,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:59:28,819 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:59:28,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:59:28,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:59:28,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:59:28,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:59:28,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 05:59:28,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 05:59:28,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:59:28,821 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 [2020-10-20 05:59:29,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:59:29,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:59:29,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:59:29,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:59:29,082 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:59:29,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2020-10-20 05:59:29,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9de22a599/9f1a1dca00d34a5bab42c20bc8322ea9/FLAG5c7fdd327 [2020-10-20 05:59:29,606 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:59:29,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2020-10-20 05:59:29,614 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9de22a599/9f1a1dca00d34a5bab42c20bc8322ea9/FLAG5c7fdd327 [2020-10-20 05:59:30,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9de22a599/9f1a1dca00d34a5bab42c20bc8322ea9 [2020-10-20 05:59:30,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:59:30,051 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:59:30,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:59:30,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:59:30,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:59:30,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:59:30" (1/1) ... [2020-10-20 05:59:30,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b06922a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:30, skipping insertion in model container [2020-10-20 05:59:30,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:59:30" (1/1) ... [2020-10-20 05:59:30,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:59:30,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:59:30,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:59:30,336 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:59:30,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:59:30,369 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:59:30,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:30 WrapperNode [2020-10-20 05:59:30,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:59:30,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:59:30,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:59:30,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:59:30,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:30" (1/1) ... [2020-10-20 05:59:30,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:30" (1/1) ... [2020-10-20 05:59:30,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:30" (1/1) ... [2020-10-20 05:59:30,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:30" (1/1) ... [2020-10-20 05:59:30,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:30" (1/1) ... [2020-10-20 05:59:30,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:30" (1/1) ... [2020-10-20 05:59:30,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:30" (1/1) ... [2020-10-20 05:59:30,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:59:30,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:59:30,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:59:30,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:59:30,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:30" (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 [2020-10-20 05:59:30,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:59:30,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:59:30,468 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2020-10-20 05:59:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-20 05:59:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:59:30,470 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2020-10-20 05:59:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 05:59:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-20 05:59:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:59:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 05:59:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:59:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:59:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:59:30,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:59:30,782 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:59:30,783 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-20 05:59:30,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:59:30 BoogieIcfgContainer [2020-10-20 05:59:30,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:59:30,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:59:30,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:59:30,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:59:30,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:59:30" (1/3) ... [2020-10-20 05:59:30,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c97a151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:59:30, skipping insertion in model container [2020-10-20 05:59:30,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:30" (2/3) ... [2020-10-20 05:59:30,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c97a151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:59:30, skipping insertion in model container [2020-10-20 05:59:30,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:59:30" (3/3) ... [2020-10-20 05:59:30,795 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_-write.c [2020-10-20 05:59:30,810 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:59:30,817 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-10-20 05:59:30,833 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-10-20 05:59:30,862 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:59:30,863 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:59:30,863 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:59:30,863 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:59:30,863 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:59:30,864 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:59:30,864 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:59:30,864 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:59:30,881 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-10-20 05:59:30,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:59:30,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:30,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:30,893 INFO L429 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]=== [2020-10-20 05:59:30,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:30,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1403638412, now seen corresponding path program 1 times [2020-10-20 05:59:30,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:30,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953660288] [2020-10-20 05:59:30,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:31,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:31,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:31,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953660288] [2020-10-20 05:59:31,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:31,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 05:59:31,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354826514] [2020-10-20 05:59:31,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 05:59:31,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:31,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 05:59:31,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 05:59:31,106 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-10-20 05:59:31,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:31,235 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2020-10-20 05:59:31,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 05:59:31,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-20 05:59:31,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:31,246 INFO L225 Difference]: With dead ends: 52 [2020-10-20 05:59:31,247 INFO L226 Difference]: Without dead ends: 49 [2020-10-20 05:59:31,249 INFO L677 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 [2020-10-20 05:59:31,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-20 05:59:31,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-20 05:59:31,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-20 05:59:31,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-10-20 05:59:31,282 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 10 [2020-10-20 05:59:31,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:31,283 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-10-20 05:59:31,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 05:59:31,283 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-10-20 05:59:31,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:59:31,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:31,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:31,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 05:59:31,284 INFO L429 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]=== [2020-10-20 05:59:31,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:31,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1403995904, now seen corresponding path program 1 times [2020-10-20 05:59:31,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:31,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943926546] [2020-10-20 05:59:31,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:31,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:31,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:31,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943926546] [2020-10-20 05:59:31,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:31,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:59:31,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775366300] [2020-10-20 05:59:31,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:59:31,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:31,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:59:31,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:59:31,350 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 4 states. [2020-10-20 05:59:31,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:31,476 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2020-10-20 05:59:31,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:59:31,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 05:59:31,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:31,487 INFO L225 Difference]: With dead ends: 56 [2020-10-20 05:59:31,488 INFO L226 Difference]: Without dead ends: 56 [2020-10-20 05:59:31,489 INFO L677 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 [2020-10-20 05:59:31,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-20 05:59:31,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2020-10-20 05:59:31,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-20 05:59:31,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-20 05:59:31,514 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 10 [2020-10-20 05:59:31,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:31,515 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-20 05:59:31,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:59:31,515 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-20 05:59:31,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 05:59:31,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:31,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:31,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 05:59:31,516 INFO L429 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]=== [2020-10-20 05:59:31,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:31,517 INFO L82 PathProgramCache]: Analyzing trace with hash -571487811, now seen corresponding path program 1 times [2020-10-20 05:59:31,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:31,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121725866] [2020-10-20 05:59:31,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:31,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:31,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:31,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121725866] [2020-10-20 05:59:31,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:31,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:59:31,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146651840] [2020-10-20 05:59:31,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:59:31,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:31,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:59:31,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:59:31,630 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2020-10-20 05:59:31,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:31,795 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2020-10-20 05:59:31,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:59:31,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-20 05:59:31,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:31,797 INFO L225 Difference]: With dead ends: 47 [2020-10-20 05:59:31,797 INFO L226 Difference]: Without dead ends: 47 [2020-10-20 05:59:31,798 INFO L677 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 [2020-10-20 05:59:31,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-20 05:59:31,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-20 05:59:31,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-20 05:59:31,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-20 05:59:31,805 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 11 [2020-10-20 05:59:31,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:31,805 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-20 05:59:31,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:59:31,806 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-20 05:59:31,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 05:59:31,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:31,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:31,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 05:59:31,807 INFO L429 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]=== [2020-10-20 05:59:31,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:31,808 INFO L82 PathProgramCache]: Analyzing trace with hash -571487810, now seen corresponding path program 1 times [2020-10-20 05:59:31,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:31,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748640982] [2020-10-20 05:59:31,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:31,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:31,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748640982] [2020-10-20 05:59:31,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:31,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:59:31,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074894432] [2020-10-20 05:59:31,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:59:31,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:31,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:59:31,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:59:31,919 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 6 states. [2020-10-20 05:59:32,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:32,134 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2020-10-20 05:59:32,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:59:32,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-20 05:59:32,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:32,138 INFO L225 Difference]: With dead ends: 72 [2020-10-20 05:59:32,139 INFO L226 Difference]: Without dead ends: 72 [2020-10-20 05:59:32,139 INFO L677 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 [2020-10-20 05:59:32,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-20 05:59:32,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2020-10-20 05:59:32,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-20 05:59:32,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-10-20 05:59:32,149 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 11 [2020-10-20 05:59:32,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:32,149 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-10-20 05:59:32,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:59:32,150 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-10-20 05:59:32,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 05:59:32,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:32,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:32,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 05:59:32,152 INFO L429 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]=== [2020-10-20 05:59:32,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:32,152 INFO L82 PathProgramCache]: Analyzing trace with hash -536252953, now seen corresponding path program 1 times [2020-10-20 05:59:32,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:32,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295208935] [2020-10-20 05:59:32,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:32,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:32,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:32,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295208935] [2020-10-20 05:59:32,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:32,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 05:59:32,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555630223] [2020-10-20 05:59:32,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:59:32,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:32,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:59:32,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:59:32,219 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 4 states. [2020-10-20 05:59:32,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:32,308 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2020-10-20 05:59:32,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:59:32,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 05:59:32,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:32,310 INFO L225 Difference]: With dead ends: 55 [2020-10-20 05:59:32,310 INFO L226 Difference]: Without dead ends: 55 [2020-10-20 05:59:32,311 INFO L677 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 [2020-10-20 05:59:32,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-20 05:59:32,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-20 05:59:32,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-20 05:59:32,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-10-20 05:59:32,317 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 12 [2020-10-20 05:59:32,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:32,318 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-10-20 05:59:32,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:59:32,318 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-10-20 05:59:32,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 05:59:32,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:32,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:32,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 05:59:32,319 INFO L429 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]=== [2020-10-20 05:59:32,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:32,320 INFO L82 PathProgramCache]: Analyzing trace with hash -536252952, now seen corresponding path program 1 times [2020-10-20 05:59:32,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:32,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018954773] [2020-10-20 05:59:32,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 05:59:32,337 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 05:59:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 05:59:32,353 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 05:59:32,377 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 05:59:32,377 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 05:59:32,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 05:59:32,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:59:32 BoogieIcfgContainer [2020-10-20 05:59:32,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 05:59:32,403 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 05:59:32,403 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 05:59:32,403 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 05:59:32,404 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:59:30" (3/4) ... [2020-10-20 05:59:32,406 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 05:59:32,448 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 05:59:32,449 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 05:59:32,451 INFO L168 Benchmark]: Toolchain (without parser) took 2406.56 ms. Allocated memory was 34.1 MB in the beginning and 53.0 MB in the end (delta: 18.9 MB). Free memory was 10.4 MB in the beginning and 13.2 MB in the end (delta: -2.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:32,452 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 33.0 MB. Free memory was 17.7 MB in the beginning and 17.7 MB in the end (delta: 39.9 kB). Peak memory consumption was 39.9 kB. Max. memory is 14.3 GB. [2020-10-20 05:59:32,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.49 ms. Allocated memory was 34.1 MB in the beginning and 43.5 MB in the end (delta: 9.4 MB). Free memory was 9.5 MB in the beginning and 25.9 MB in the end (delta: -16.4 MB). Peak memory consumption was 6.8 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:32,454 INFO L168 Benchmark]: Boogie Preprocessor took 37.92 ms. Allocated memory is still 43.5 MB. Free memory was 25.9 MB in the beginning and 24.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:32,455 INFO L168 Benchmark]: RCFGBuilder took 376.92 ms. Allocated memory was 43.5 MB in the beginning and 43.0 MB in the end (delta: -524.3 kB). Free memory was 24.0 MB in the beginning and 14.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 11.6 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:32,455 INFO L168 Benchmark]: TraceAbstraction took 1615.58 ms. Allocated memory was 43.0 MB in the beginning and 53.0 MB in the end (delta: 10.0 MB). Free memory was 14.3 MB in the beginning and 15.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:32,456 INFO L168 Benchmark]: Witness Printer took 45.97 ms. Allocated memory is still 53.0 MB. Free memory was 15.3 MB in the beginning and 13.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:32,460 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 33.0 MB. Free memory was 17.7 MB in the beginning and 17.7 MB in the end (delta: 39.9 kB). Peak memory consumption was 39.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 316.49 ms. Allocated memory was 34.1 MB in the beginning and 43.5 MB in the end (delta: 9.4 MB). Free memory was 9.5 MB in the beginning and 25.9 MB in the end (delta: -16.4 MB). Peak memory consumption was 6.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 37.92 ms. Allocated memory is still 43.5 MB. Free memory was 25.9 MB in the beginning and 24.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 376.92 ms. Allocated memory was 43.5 MB in the beginning and 43.0 MB in the end (delta: -524.3 kB). Free memory was 24.0 MB in the beginning and 14.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 11.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1615.58 ms. Allocated memory was 43.0 MB in the beginning and 53.0 MB in the end (delta: 10.0 MB). Free memory was 14.3 MB in the beginning and 15.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. * Witness Printer took 45.97 ms. Allocated memory is still 53.0 MB. Free memory was 15.3 MB in the beginning and 13.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 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. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 200 SDtfs, 125 SDslu, 165 SDs, 0 SdLazy, 439 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 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, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 1884 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...