./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/brs1f.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/array-fpi/brs1f.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 80fd0a896763b908f9317a32a4ce4a8bee26f3fe .......................................................................................................................................................................................................................................................................................................................................................................... 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 15:32:50,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 15:32:50,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 15:32:50,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 15:32:50,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 15:32:50,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 15:32:50,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 15:32:50,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 15:32:50,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 15:32:50,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 15:32:50,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 15:32:50,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 15:32:50,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 15:32:50,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 15:32:50,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 15:32:50,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 15:32:50,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 15:32:50,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 15:32:50,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 15:32:50,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 15:32:50,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 15:32:50,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 15:32:50,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 15:32:50,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 15:32:50,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 15:32:50,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 15:32:50,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 15:32:50,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 15:32:50,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 15:32:50,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 15:32:50,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 15:32:50,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 15:32:50,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 15:32:50,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 15:32:50,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 15:32:50,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 15:32:50,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 15:32:50,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 15:32:50,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 15:32:50,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 15:32:50,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 15:32:50,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 15:32:50,970 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 15:32:50,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 15:32:50,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 15:32:50,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 15:32:50,975 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 15:32:50,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 15:32:50,976 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 15:32:50,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 15:32:50,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 15:32:50,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 15:32:50,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 15:32:50,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 15:32:50,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 15:32:50,978 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 15:32:50,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 15:32:50,979 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 15:32:50,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 15:32:50,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 15:32:50,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 15:32:50,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 15:32:50,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 15:32:50,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 15:32:50,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 15:32:50,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 15:32:50,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 15:32:50,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 15:32:50,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 15:32:50,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 15:32:50,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 15:32:50,984 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 -> 80fd0a896763b908f9317a32a4ce4a8bee26f3fe [2019-11-28 15:32:51,321 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 15:32:51,336 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 15:32:51,339 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 15:32:51,341 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 15:32:51,342 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 15:32:51,343 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/brs1f.c [2019-11-28 15:32:51,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/313ad14a2/4ead88f6f2644b14ac35c8c1a96b7678/FLAG3af32efb0 [2019-11-28 15:32:51,819 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 15:32:51,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs1f.c [2019-11-28 15:32:51,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/313ad14a2/4ead88f6f2644b14ac35c8c1a96b7678/FLAG3af32efb0 [2019-11-28 15:32:52,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/313ad14a2/4ead88f6f2644b14ac35c8c1a96b7678 [2019-11-28 15:32:52,220 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 15:32:52,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 15:32:52,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 15:32:52,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 15:32:52,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 15:32:52,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:32:52" (1/1) ... [2019-11-28 15:32:52,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b52569d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:52, skipping insertion in model container [2019-11-28 15:32:52,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:32:52" (1/1) ... [2019-11-28 15:32:52,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 15:32:52,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 15:32:52,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 15:32:52,511 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 15:32:52,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 15:32:52,569 INFO L208 MainTranslator]: Completed translation [2019-11-28 15:32:52,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:52 WrapperNode [2019-11-28 15:32:52,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 15:32:52,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 15:32:52,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 15:32:52,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 15:32:52,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:52" (1/1) ... [2019-11-28 15:32:52,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:52" (1/1) ... [2019-11-28 15:32:52,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 15:32:52,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 15:32:52,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 15:32:52,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 15:32:52,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:52" (1/1) ... [2019-11-28 15:32:52,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:52" (1/1) ... [2019-11-28 15:32:52,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:52" (1/1) ... [2019-11-28 15:32:52,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:52" (1/1) ... [2019-11-28 15:32:52,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:52" (1/1) ... [2019-11-28 15:32:52,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:52" (1/1) ... [2019-11-28 15:32:52,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:52" (1/1) ... [2019-11-28 15:32:52,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 15:32:52,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 15:32:52,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 15:32:52,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 15:32:52,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:52" (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 15:32:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 15:32:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 15:32:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 15:32:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 15:32:52,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 15:32:52,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 15:32:52,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 15:32:52,991 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 15:32:52,992 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-28 15:32:52,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:32:52 BoogieIcfgContainer [2019-11-28 15:32:52,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 15:32:52,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 15:32:52,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 15:32:52,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 15:32:52,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:32:52" (1/3) ... [2019-11-28 15:32:53,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b93f34d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:32:52, skipping insertion in model container [2019-11-28 15:32:53,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:52" (2/3) ... [2019-11-28 15:32:53,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b93f34d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:32:53, skipping insertion in model container [2019-11-28 15:32:53,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:32:52" (3/3) ... [2019-11-28 15:32:53,002 INFO L109 eAbstractionObserver]: Analyzing ICFG brs1f.c [2019-11-28 15:32:53,016 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 15:32:53,025 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 15:32:53,039 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 15:32:53,070 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 15:32:53,071 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 15:32:53,071 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 15:32:53,071 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 15:32:53,072 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 15:32:53,072 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 15:32:53,072 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 15:32:53,072 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 15:32:53,090 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-28 15:32:53,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 15:32:53,097 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:32:53,098 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:32:53,098 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:32:53,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:32:53,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1623807605, now seen corresponding path program 1 times [2019-11-28 15:32:53,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:32:53,114 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278447461] [2019-11-28 15:32:53,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:32:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:32:53,265 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 15:32:53,266 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278447461] [2019-11-28 15:32:53,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:32:53,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 15:32:53,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528804518] [2019-11-28 15:32:53,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 15:32:53,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:32:53,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 15:32:53,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 15:32:53,293 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-11-28 15:32:53,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:32:53,311 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2019-11-28 15:32:53,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 15:32:53,313 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-28 15:32:53,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:32:53,321 INFO L225 Difference]: With dead ends: 33 [2019-11-28 15:32:53,321 INFO L226 Difference]: Without dead ends: 14 [2019-11-28 15:32:53,325 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 15:32:53,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-28 15:32:53,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-28 15:32:53,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 15:32:53,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-28 15:32:53,352 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2019-11-28 15:32:53,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:32:53,353 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-28 15:32:53,353 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 15:32:53,353 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-28 15:32:53,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 15:32:53,354 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:32:53,355 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:32:53,355 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:32:53,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:32:53,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1308886944, now seen corresponding path program 1 times [2019-11-28 15:32:53,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:32:53,356 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112110711] [2019-11-28 15:32:53,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:32:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:32:53,421 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 15:32:53,422 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112110711] [2019-11-28 15:32:53,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:32:53,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 15:32:53,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093679923] [2019-11-28 15:32:53,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 15:32:53,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:32:53,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 15:32:53,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 15:32:53,426 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 3 states. [2019-11-28 15:32:53,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:32:53,505 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2019-11-28 15:32:53,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 15:32:53,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-28 15:32:53,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:32:53,507 INFO L225 Difference]: With dead ends: 25 [2019-11-28 15:32:53,507 INFO L226 Difference]: Without dead ends: 17 [2019-11-28 15:32:53,509 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 15:32:53,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-28 15:32:53,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2019-11-28 15:32:53,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-28 15:32:53,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-28 15:32:53,514 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2019-11-28 15:32:53,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:32:53,515 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-28 15:32:53,515 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 15:32:53,515 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-28 15:32:53,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 15:32:53,516 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:32:53,517 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:32:53,517 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:32:53,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:32:53,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1738269227, now seen corresponding path program 1 times [2019-11-28 15:32:53,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:32:53,520 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515796148] [2019-11-28 15:32:53,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:32:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:32:53,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 15:32:53,614 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515796148] [2019-11-28 15:32:53,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:32:53,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 15:32:53,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604696403] [2019-11-28 15:32:53,615 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 15:32:53,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:32:53,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 15:32:53,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 15:32:53,616 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2019-11-28 15:32:53,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:32:53,670 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2019-11-28 15:32:53,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 15:32:53,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-28 15:32:53,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:32:53,671 INFO L225 Difference]: With dead ends: 27 [2019-11-28 15:32:53,672 INFO L226 Difference]: Without dead ends: 20 [2019-11-28 15:32:53,672 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 15:32:53,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-28 15:32:53,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2019-11-28 15:32:53,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-28 15:32:53,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-11-28 15:32:53,678 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2019-11-28 15:32:53,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:32:53,678 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-11-28 15:32:53,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 15:32:53,679 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-11-28 15:32:53,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 15:32:53,679 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:32:53,680 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:32:53,680 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:32:53,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:32:53,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1896871737, now seen corresponding path program 1 times [2019-11-28 15:32:53,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:32:53,681 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575920639] [2019-11-28 15:32:53,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:32:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 15:32:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 15:32:53,777 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 15:32:53,778 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 15:32:53,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:32:53 BoogieIcfgContainer [2019-11-28 15:32:53,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 15:32:53,815 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 15:32:53,815 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 15:32:53,816 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 15:32:53,816 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:32:52" (3/4) ... [2019-11-28 15:32:53,818 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 15:32:53,869 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 15:32:53,869 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 15:32:53,872 INFO L168 Benchmark]: Toolchain (without parser) took 1649.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 961.7 MB in the beginning and 1.0 GB in the end (delta: -79.8 MB). Peak memory consumption was 39.2 MB. Max. memory is 11.5 GB. [2019-11-28 15:32:53,873 INFO L168 Benchmark]: CDTParser took 0.76 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 15:32:53,874 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.88 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 15:32:53,875 INFO L168 Benchmark]: Boogie Procedure Inliner took 110.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -164.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 15:32:53,876 INFO L168 Benchmark]: Boogie Preprocessor took 24.56 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 15:32:53,877 INFO L168 Benchmark]: RCFGBuilder took 286.52 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: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-28 15:32:53,878 INFO L168 Benchmark]: TraceAbstraction took 820.35 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: 40.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 11.5 GB. [2019-11-28 15:32:53,879 INFO L168 Benchmark]: Witness Printer took 54.23 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 15:32:53,883 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 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 344.88 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 110.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -164.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.56 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 286.52 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: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 820.35 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: 40.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 11.5 GB. * Witness Printer took 54.23 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int N; VAL [N=0] [L18] N = __VERIFIER_nondet_int() [L19] COND FALSE !(N <= 0) [L22] int i; [L23] long long sum[1]; [L24] int *a = malloc(sizeof(int)*N); [L26] i=0 VAL [N=1] [L26] COND TRUE i