./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test_while_int.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9d74f4be-7563-41d1-882b-66c5988e02b4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9d74f4be-7563-41d1-882b-66c5988e02b4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9d74f4be-7563-41d1-882b-66c5988e02b4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9d74f4be-7563-41d1-882b-66c5988e02b4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test_while_int.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9d74f4be-7563-41d1-882b-66c5988e02b4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9d74f4be-7563-41d1-882b-66c5988e02b4/bin/uautomizer --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 5a78e5ac8a70d10b48fa6c5955c8640de4def14b .................................................................................................................................................................................................................................................................................................................. 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 0.1.24-6b5699a [2019-11-25 08:53:49,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:53:49,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:53:49,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:53:49,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:53:49,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:53:49,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:53:49,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:53:49,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:53:49,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:53:49,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:53:49,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:53:49,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:53:49,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:53:49,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:53:49,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:53:49,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:53:49,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:53:49,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:53:49,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:53:49,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:53:49,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:53:49,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:53:49,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:53:49,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:53:49,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:53:49,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:53:49,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:53:49,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:53:49,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:53:49,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:53:49,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:53:49,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:53:49,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:53:49,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:53:49,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:53:49,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:53:49,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:53:49,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:53:49,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:53:49,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:53:49,907 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9d74f4be-7563-41d1-882b-66c5988e02b4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:53:49,930 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:53:49,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:53:49,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:53:49,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:53:49,941 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:53:49,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:53:49,942 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:53:49,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:53:49,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:53:49,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:53:49,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:53:49,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:53:49,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:53:49,943 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:53:49,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:53:49,944 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:53:49,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:53:49,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:53:49,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:53:49,945 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:53:49,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:53:49,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:53:49,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:53:49,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:53:49,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:53:49,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:53:49,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:53:49,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:53:49,947 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_9d74f4be-7563-41d1-882b-66c5988e02b4/bin/uautomizer 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 -> 5a78e5ac8a70d10b48fa6c5955c8640de4def14b [2019-11-25 08:53:50,082 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:53:50,092 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:53:50,095 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:53:50,096 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:53:50,096 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:53:50,097 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9d74f4be-7563-41d1-882b-66c5988e02b4/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test_while_int.i [2019-11-25 08:53:50,153 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d74f4be-7563-41d1-882b-66c5988e02b4/bin/uautomizer/data/ef9606cbe/8db45e576e4f49b4b45f2b958b4ac9a5/FLAG55fcecfc5 [2019-11-25 08:53:50,579 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:53:50,580 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9d74f4be-7563-41d1-882b-66c5988e02b4/sv-benchmarks/c/ldv-regression/test_while_int.i [2019-11-25 08:53:50,585 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d74f4be-7563-41d1-882b-66c5988e02b4/bin/uautomizer/data/ef9606cbe/8db45e576e4f49b4b45f2b958b4ac9a5/FLAG55fcecfc5 [2019-11-25 08:53:50,946 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9d74f4be-7563-41d1-882b-66c5988e02b4/bin/uautomizer/data/ef9606cbe/8db45e576e4f49b4b45f2b958b4ac9a5 [2019-11-25 08:53:50,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:53:50,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:53:50,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:53:50,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:53:50,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:53:50,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:53:50" (1/1) ... [2019-11-25 08:53:50,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45b3a69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:50, skipping insertion in model container [2019-11-25 08:53:50,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:53:50" (1/1) ... [2019-11-25 08:53:50,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:53:50,978 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:53:51,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:53:51,101 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:53:51,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:53:51,190 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:53:51,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:51 WrapperNode [2019-11-25 08:53:51,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:53:51,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:53:51,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:53:51,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:53:51,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:51" (1/1) ... [2019-11-25 08:53:51,201 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:51" (1/1) ... [2019-11-25 08:53:51,217 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:53:51,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:53:51,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:53:51,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:53:51,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:51" (1/1) ... [2019-11-25 08:53:51,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:51" (1/1) ... [2019-11-25 08:53:51,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:51" (1/1) ... [2019-11-25 08:53:51,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:51" (1/1) ... [2019-11-25 08:53:51,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:51" (1/1) ... [2019-11-25 08:53:51,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:51" (1/1) ... [2019-11-25 08:53:51,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:51" (1/1) ... [2019-11-25 08:53:51,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:53:51,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:53:51,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:53:51,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:53:51,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d74f4be-7563-41d1-882b-66c5988e02b4/bin/uautomizer/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 [2019-11-25 08:53:51,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:53:51,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:53:51,467 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:53:51,468 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-25 08:53:51,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:51 BoogieIcfgContainer [2019-11-25 08:53:51,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:53:51,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:53:51,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:53:51,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:53:51,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:53:50" (1/3) ... [2019-11-25 08:53:51,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb7dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:53:51, skipping insertion in model container [2019-11-25 08:53:51,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:51" (2/3) ... [2019-11-25 08:53:51,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb7dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:53:51, skipping insertion in model container [2019-11-25 08:53:51,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:51" (3/3) ... [2019-11-25 08:53:51,475 INFO L109 eAbstractionObserver]: Analyzing ICFG test_while_int.i [2019-11-25 08:53:51,486 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:53:51,491 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:53:51,501 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:53:51,528 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:53:51,528 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:53:51,529 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:53:51,529 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:53:51,529 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:53:51,529 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:53:51,530 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:53:51,531 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:53:51,543 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-25 08:53:51,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-25 08:53:51,547 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:51,548 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-25 08:53:51,548 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:51,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:51,553 INFO L82 PathProgramCache]: Analyzing trace with hash 963404, now seen corresponding path program 1 times [2019-11-25 08:53:51,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:51,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40369222] [2019-11-25 08:53:51,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:51,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:51,684 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40369222] [2019-11-25 08:53:51,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:53:51,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:53:51,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138767989] [2019-11-25 08:53:51,699 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:53:51,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:53:51,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:53:51,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:53:51,732 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2019-11-25 08:53:51,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:51,775 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2019-11-25 08:53:51,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:53:51,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-25 08:53:51,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:51,785 INFO L225 Difference]: With dead ends: 19 [2019-11-25 08:53:51,786 INFO L226 Difference]: Without dead ends: 7 [2019-11-25 08:53:51,788 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:53:51,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-25 08:53:51,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-25 08:53:51,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-25 08:53:51,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-25 08:53:51,824 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-11-25 08:53:51,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:51,824 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-25 08:53:51,824 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:53:51,824 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-25 08:53:51,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-25 08:53:51,825 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:51,825 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-11-25 08:53:51,825 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:51,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:51,826 INFO L82 PathProgramCache]: Analyzing trace with hash 925765417, now seen corresponding path program 1 times [2019-11-25 08:53:51,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:51,826 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198426509] [2019-11-25 08:53:51,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:51,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:51,870 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198426509] [2019-11-25 08:53:51,870 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749790872] [2019-11-25 08:53:51,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d74f4be-7563-41d1-882b-66c5988e02b4/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:53:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:51,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:53:51,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:51,932 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:53:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:51,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:53:51,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-25 08:53:51,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148439701] [2019-11-25 08:53:51,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:53:51,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:53:51,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:53:51,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:53:51,949 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2019-11-25 08:53:51,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:51,995 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-25 08:53:51,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:53:51,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-25 08:53:51,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:51,997 INFO L225 Difference]: With dead ends: 12 [2019-11-25 08:53:51,997 INFO L226 Difference]: Without dead ends: 10 [2019-11-25 08:53:51,998 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:53:51,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-25 08:53:52,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-11-25 08:53:52,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-25 08:53:52,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-25 08:53:52,001 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-11-25 08:53:52,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:52,001 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-25 08:53:52,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:53:52,001 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-25 08:53:52,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-25 08:53:52,001 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:52,001 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2019-11-25 08:53:52,202 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:53:52,203 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:52,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:52,203 INFO L82 PathProgramCache]: Analyzing trace with hash 602269638, now seen corresponding path program 2 times [2019-11-25 08:53:52,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:52,204 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439265888] [2019-11-25 08:53:52,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:53:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:53:52,237 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:53:52,237 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:53:52,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:53:52 BoogieIcfgContainer [2019-11-25 08:53:52,251 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:53:52,252 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:53:52,252 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:53:52,252 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:53:52,252 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:51" (3/4) ... [2019-11-25 08:53:52,254 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:53:52,291 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9d74f4be-7563-41d1-882b-66c5988e02b4/bin/uautomizer/witness.graphml [2019-11-25 08:53:52,291 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:53:52,293 INFO L168 Benchmark]: Toolchain (without parser) took 1342.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -120.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:52,294 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:53:52,294 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -182.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:52,295 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:53:52,295 INFO L168 Benchmark]: Boogie Preprocessor took 14.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:53:52,295 INFO L168 Benchmark]: RCFGBuilder took 236.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:52,296 INFO L168 Benchmark]: TraceAbstraction took 781.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:52,296 INFO L168 Benchmark]: Witness Printer took 39.51 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:53:52,299 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 239.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -182.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 236.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 781.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 11.5 GB. * Witness Printer took 39.51 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L23] int i=0; [L24] COND TRUE i<5 [L25] i++ [L18] (b) ? (0) : __blast_assert () [L24] COND TRUE i<5 [L25] i++ [L18] (b) ? (0) : __blast_assert () [L24] COND TRUE i<5 [L25] i++ [L18] (b) ? (0) : __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 7 SDslu, 15 SDs, 0 SdLazy, 21 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, 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, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 159 SizeOfPredicates, 3 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...