./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/nec11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_101090b7-a5ce-427c-bf05-5427684fd416/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_101090b7-a5ce-427c-bf05-5427684fd416/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_101090b7-a5ce-427c-bf05-5427684fd416/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_101090b7-a5ce-427c-bf05-5427684fd416/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/nec11.c -s /tmp/vcloud-vcloud-master/worker/run_dir_101090b7-a5ce-427c-bf05-5427684fd416/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_101090b7-a5ce-427c-bf05-5427684fd416/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 956956519a5dd5945389347ef99ef2322ddc4acd .................................................................................................................................................................................................................................................................. 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-cad4683 [2019-11-15 23:54:12,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:54:12,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:54:12,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:54:12,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:54:12,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:54:12,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:54:12,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:54:12,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:54:12,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:54:12,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:54:12,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:54:12,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:54:12,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:54:12,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:54:12,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:54:12,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:54:12,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:54:12,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:54:12,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:54:12,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:54:12,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:54:12,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:54:12,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:54:12,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:54:12,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:54:12,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:54:12,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:54:12,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:54:12,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:54:12,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:54:12,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:54:12,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:54:12,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:54:12,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:54:12,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:54:12,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:54:12,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:54:12,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:54:12,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:54:12,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:54:12,996 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_101090b7-a5ce-427c-bf05-5427684fd416/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:54:13,009 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:54:13,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:54:13,011 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:54:13,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:54:13,011 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:54:13,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:54:13,012 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:54:13,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:54:13,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:54:13,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:54:13,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:54:13,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:54:13,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:54:13,014 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:54:13,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:54:13,014 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:54:13,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:54:13,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:54:13,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:54:13,015 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:54:13,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:54:13,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:54:13,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:54:13,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:54:13,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:54:13,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:54:13,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:54:13,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:54:13,017 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_101090b7-a5ce-427c-bf05-5427684fd416/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 -> 956956519a5dd5945389347ef99ef2322ddc4acd [2019-11-15 23:54:13,043 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:54:13,053 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:54:13,055 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:54:13,057 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:54:13,057 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:54:13,058 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_101090b7-a5ce-427c-bf05-5427684fd416/bin/uautomizer/../../sv-benchmarks/c/loops/nec11.c [2019-11-15 23:54:13,110 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_101090b7-a5ce-427c-bf05-5427684fd416/bin/uautomizer/data/e066b1001/876ef3e3bbe243b6a494f6e7de61ffd9/FLAGbd797211c [2019-11-15 23:54:13,495 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:54:13,495 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_101090b7-a5ce-427c-bf05-5427684fd416/sv-benchmarks/c/loops/nec11.c [2019-11-15 23:54:13,499 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_101090b7-a5ce-427c-bf05-5427684fd416/bin/uautomizer/data/e066b1001/876ef3e3bbe243b6a494f6e7de61ffd9/FLAGbd797211c [2019-11-15 23:54:13,509 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_101090b7-a5ce-427c-bf05-5427684fd416/bin/uautomizer/data/e066b1001/876ef3e3bbe243b6a494f6e7de61ffd9 [2019-11-15 23:54:13,511 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:54:13,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:54:13,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:54:13,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:54:13,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:54:13,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:54:13" (1/1) ... [2019-11-15 23:54:13,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d6f0d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:54:13, skipping insertion in model container [2019-11-15 23:54:13,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:54:13" (1/1) ... [2019-11-15 23:54:13,527 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:54:13,541 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:54:13,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:54:13,801 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:54:13,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:54:13,834 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:54:13,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:54:13 WrapperNode [2019-11-15 23:54:13,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:54:13,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:54:13,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:54:13,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:54:13,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:54:13" (1/1) ... [2019-11-15 23:54:13,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:54:13" (1/1) ... [2019-11-15 23:54:13,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:54:13,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:54:13,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:54:13,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:54:13,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:54:13" (1/1) ... [2019-11-15 23:54:13,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:54:13" (1/1) ... [2019-11-15 23:54:13,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:54:13" (1/1) ... [2019-11-15 23:54:13,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:54:13" (1/1) ... [2019-11-15 23:54:13,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:54:13" (1/1) ... [2019-11-15 23:54:13,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:54:13" (1/1) ... [2019-11-15 23:54:13,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:54:13" (1/1) ... [2019-11-15 23:54:13,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:54:13,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:54:13,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:54:13,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:54:13,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:54:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_101090b7-a5ce-427c-bf05-5427684fd416/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 [2019-11-15 23:54:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:54:13,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:54:14,100 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:54:14,101 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-15 23:54:14,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:54:14 BoogieIcfgContainer [2019-11-15 23:54:14,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:54:14,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:54:14,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:54:14,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:54:14,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:54:13" (1/3) ... [2019-11-15 23:54:14,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a429ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:54:14, skipping insertion in model container [2019-11-15 23:54:14,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:54:13" (2/3) ... [2019-11-15 23:54:14,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a429ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:54:14, skipping insertion in model container [2019-11-15 23:54:14,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:54:14" (3/3) ... [2019-11-15 23:54:14,113 INFO L109 eAbstractionObserver]: Analyzing ICFG nec11.c [2019-11-15 23:54:14,119 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:54:14,125 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:54:14,137 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:54:14,169 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:54:14,169 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:54:14,170 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:54:14,170 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:54:14,170 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:54:14,170 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:54:14,171 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:54:14,171 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:54:14,187 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-15 23:54:14,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-15 23:54:14,194 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:54:14,195 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-15 23:54:14,197 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:54:14,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:54:14,203 INFO L82 PathProgramCache]: Analyzing trace with hash 30139652, now seen corresponding path program 1 times [2019-11-15 23:54:14,212 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:54:14,213 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714511084] [2019-11-15 23:54:14,213 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:54:14,214 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:54:14,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:54:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:54:14,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:54:14,318 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714511084] [2019-11-15 23:54:14,319 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:54:14,319 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:54:14,320 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346614574] [2019-11-15 23:54:14,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 23:54:14,325 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:54:14,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 23:54:14,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:54:14,340 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2019-11-15 23:54:14,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:54:14,358 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-11-15 23:54:14,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:54:14,360 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-15 23:54:14,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:54:14,371 INFO L225 Difference]: With dead ends: 20 [2019-11-15 23:54:14,371 INFO L226 Difference]: Without dead ends: 8 [2019-11-15 23:54:14,373 INFO L600 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 [2019-11-15 23:54:14,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-15 23:54:14,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-15 23:54:14,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-15 23:54:14,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-11-15 23:54:14,402 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2019-11-15 23:54:14,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:54:14,403 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-15 23:54:14,403 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 23:54:14,403 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-11-15 23:54:14,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-15 23:54:14,403 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:54:14,404 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-15 23:54:14,404 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:54:14,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:54:14,404 INFO L82 PathProgramCache]: Analyzing trace with hash 29811951, now seen corresponding path program 1 times [2019-11-15 23:54:14,405 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:54:14,405 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651821225] [2019-11-15 23:54:14,405 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:54:14,405 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:54:14,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:54:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:54:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:54:14,444 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:54:14,444 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:54:14,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:54:14 BoogieIcfgContainer [2019-11-15 23:54:14,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:54:14,460 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:54:14,460 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:54:14,460 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:54:14,460 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:54:14" (3/4) ... [2019-11-15 23:54:14,462 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 23:54:14,493 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_101090b7-a5ce-427c-bf05-5427684fd416/bin/uautomizer/witness.graphml [2019-11-15 23:54:14,493 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:54:14,495 INFO L168 Benchmark]: Toolchain (without parser) took 982.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -140.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:54:14,496 INFO L168 Benchmark]: CDTParser took 0.23 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. [2019-11-15 23:54:14,497 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -180.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:54:14,497 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.47 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. [2019-11-15 23:54:14,498 INFO L168 Benchmark]: Boogie Preprocessor took 20.63 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. [2019-11-15 23:54:14,498 INFO L168 Benchmark]: RCFGBuilder took 212.21 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:54:14,499 INFO L168 Benchmark]: TraceAbstraction took 356.78 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:54:14,499 INFO L168 Benchmark]: Witness Printer took 33.69 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. [2019-11-15 23:54:14,504 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 322.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -180.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.47 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 20.63 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 212.21 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 356.78 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 33.69 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: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] int a[5]; [L14] int len=0; [L15] _Bool c=__VERIFIER_nondet_bool(); [L16] int i; [L19] COND FALSE !(\read(c)) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...