./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/array-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/AutomizerReach.xml -i ../sv-benchmarks/c/loops/array-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 12bc5db9e359efdba093db73cc34fe7f7123f461 .................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 17:02:46,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:02:46,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:02:46,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:02:46,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:02:46,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:02:46,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:02:46,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:02:46,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:02:46,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:02:46,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:02:46,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:02:46,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:02:46,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:02:46,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:02:46,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:02:46,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:02:46,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:02:46,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:02:46,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:02:46,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:02:46,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:02:46,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:02:46,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:02:46,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:02:46,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:02:46,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:02:46,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:02:46,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:02:46,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:02:46,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:02:46,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:02:46,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:02:46,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:02:46,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:02:46,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:02:46,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:02:46,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:02:46,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:02:46,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:02:46,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:02:46,907 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:02:46,929 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:02:46,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:02:46,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:02:46,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:02:46,932 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:02:46,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:02:46,933 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:02:46,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:02:46,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:02:46,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:02:46,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:02:46,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:02:46,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:02:46,936 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:02:46,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:02:46,937 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:02:46,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:02:46,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:02:46,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:02:46,938 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:02:46,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:02:46,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:02:46,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:02:46,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:02:46,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:02:46,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:02:46,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:02:46,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:02:46,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:02:46,941 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 ! call(__VERIFIER_error())) ) 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 -> 12bc5db9e359efdba093db73cc34fe7f7123f461 [2019-11-28 17:02:47,299 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:02:47,314 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:02:47,317 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:02:47,319 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:02:47,320 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:02:47,321 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/array-2.c [2019-11-28 17:02:47,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41d1f6885/8966a11461a9425d8d49331849f81b7d/FLAG82172aa2f [2019-11-28 17:02:47,813 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:02:47,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/array-2.c [2019-11-28 17:02:47,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41d1f6885/8966a11461a9425d8d49331849f81b7d/FLAG82172aa2f [2019-11-28 17:02:48,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41d1f6885/8966a11461a9425d8d49331849f81b7d [2019-11-28 17:02:48,221 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:02:48,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:02:48,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:02:48,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:02:48,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:02:48,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:02:48" (1/1) ... [2019-11-28 17:02:48,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48cfb0ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:48, skipping insertion in model container [2019-11-28 17:02:48,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:02:48" (1/1) ... [2019-11-28 17:02:48,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:02:48,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:02:48,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:02:48,473 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:02:48,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:02:48,532 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:02:48,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:48 WrapperNode [2019-11-28 17:02:48,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:02:48,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:02:48,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:02:48,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:02:48,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:48" (1/1) ... [2019-11-28 17:02:48,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:48" (1/1) ... [2019-11-28 17:02:48,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:02:48,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:02:48,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:02:48,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:02:48,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:48" (1/1) ... [2019-11-28 17:02:48,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:48" (1/1) ... [2019-11-28 17:02:48,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:48" (1/1) ... [2019-11-28 17:02:48,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:48" (1/1) ... [2019-11-28 17:02:48,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:48" (1/1) ... [2019-11-28 17:02:48,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:48" (1/1) ... [2019-11-28 17:02:48,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:48" (1/1) ... [2019-11-28 17:02:48,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:02:48,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:02:48,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:02:48,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:02:48,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:48" (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 17:02:48,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 17:02:48,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:02:48,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:02:48,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 17:02:48,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 17:02:48,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 17:02:49,007 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:02:49,008 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 17:02:49,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:02:49 BoogieIcfgContainer [2019-11-28 17:02:49,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:02:49,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:02:49,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:02:49,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:02:49,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:02:48" (1/3) ... [2019-11-28 17:02:49,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8de884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:02:49, skipping insertion in model container [2019-11-28 17:02:49,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:48" (2/3) ... [2019-11-28 17:02:49,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8de884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:02:49, skipping insertion in model container [2019-11-28 17:02:49,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:02:49" (3/3) ... [2019-11-28 17:02:49,021 INFO L109 eAbstractionObserver]: Analyzing ICFG array-2.c [2019-11-28 17:02:49,036 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:02:49,045 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:02:49,072 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:02:49,100 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:02:49,101 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:02:49,101 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:02:49,101 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:02:49,101 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:02:49,102 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:02:49,102 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:02:49,102 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:02:49,115 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-28 17:02:49,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 17:02:49,121 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:02:49,122 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 17:02:49,122 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:02:49,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:02:49,129 INFO L82 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2019-11-28 17:02:49,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:02:49,141 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779860760] [2019-11-28 17:02:49,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:02:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:02:49,281 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 17:02:49,282 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779860760] [2019-11-28 17:02:49,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:02:49,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:02:49,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851130105] [2019-11-28 17:02:49,290 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 17:02:49,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:02:49,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 17:02:49,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:02:49,305 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2019-11-28 17:02:49,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:02:49,319 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2019-11-28 17:02:49,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 17:02:49,320 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-28 17:02:49,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:02:49,328 INFO L225 Difference]: With dead ends: 21 [2019-11-28 17:02:49,328 INFO L226 Difference]: Without dead ends: 9 [2019-11-28 17:02:49,331 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:02:49,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-28 17:02:49,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-28 17:02:49,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-28 17:02:49,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-11-28 17:02:49,361 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2019-11-28 17:02:49,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:02:49,362 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-11-28 17:02:49,363 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 17:02:49,363 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-11-28 17:02:49,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 17:02:49,364 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:02:49,364 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 17:02:49,364 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:02:49,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:02:49,369 INFO L82 PathProgramCache]: Analyzing trace with hash 889610002, now seen corresponding path program 1 times [2019-11-28 17:02:49,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:02:49,370 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327252442] [2019-11-28 17:02:49,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:02:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:02:49,518 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 17:02:49,518 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327252442] [2019-11-28 17:02:49,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:02:49,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 17:02:49,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615286792] [2019-11-28 17:02:49,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:02:49,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:02:49,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:02:49,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:02:49,522 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2019-11-28 17:02:49,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:02:49,556 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2019-11-28 17:02:49,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:02:49,557 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-28 17:02:49,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:02:49,558 INFO L225 Difference]: With dead ends: 16 [2019-11-28 17:02:49,558 INFO L226 Difference]: Without dead ends: 12 [2019-11-28 17:02:49,559 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:02:49,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-28 17:02:49,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2019-11-28 17:02:49,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 17:02:49,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-28 17:02:49,562 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-11-28 17:02:49,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:02:49,563 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-28 17:02:49,563 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:02:49,563 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-28 17:02:49,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 17:02:49,563 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:02:49,564 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:02:49,564 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:02:49,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:02:49,564 INFO L82 PathProgramCache]: Analyzing trace with hash -332619814, now seen corresponding path program 1 times [2019-11-28 17:02:49,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:02:49,565 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156944725] [2019-11-28 17:02:49,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:02:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 17:02:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 17:02:49,722 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 17:02:49,723 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 17:02:49,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:02:49 BoogieIcfgContainer [2019-11-28 17:02:49,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:02:49,750 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:02:49,750 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:02:49,751 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:02:49,751 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:02:49" (3/4) ... [2019-11-28 17:02:49,754 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 17:02:49,817 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:02:49,818 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:02:49,821 INFO L168 Benchmark]: Toolchain (without parser) took 1597.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 68.7 MB). Free memory was 961.7 MB in the beginning and 1.0 GB in the end (delta: -39.6 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2019-11-28 17:02:49,822 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:02:49,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.58 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:02:49,826 INFO L168 Benchmark]: Boogie Procedure Inliner took 110.15 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 68.7 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -113.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:02:49,827 INFO L168 Benchmark]: Boogie Preprocessor took 49.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-28 17:02:49,831 INFO L168 Benchmark]: RCFGBuilder took 314.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2019-11-28 17:02:49,832 INFO L168 Benchmark]: TraceAbstraction took 738.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2019-11-28 17:02:49,835 INFO L168 Benchmark]: Witness Printer took 68.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-28 17:02:49,843 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 310.58 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 110.15 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 68.7 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -113.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 314.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 738.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * Witness Printer took 68.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] unsigned int SIZE=1; [L14] unsigned int j,k; [L15] int array[SIZE], menor; [L17] menor = __VERIFIER_nondet_int() [L19] j=0 [L19] COND TRUE j