./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/jm2006_true-unreach-call_true-termination.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b82c857e-5c9e-4dcc-a815-46d5ac71f438/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b82c857e-5c9e-4dcc-a815-46d5ac71f438/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b82c857e-5c9e-4dcc-a815-46d5ac71f438/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b82c857e-5c9e-4dcc-a815-46d5ac71f438/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/jm2006_true-unreach-call_true-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_b82c857e-5c9e-4dcc-a815-46d5ac71f438/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b82c857e-5c9e-4dcc-a815-46d5ac71f438/bin-2019/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 37aa7dd2e80998c2241e95adb0e8008dc0337fe8 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 17:30:11,871 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 17:30:11,872 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 17:30:11,878 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 17:30:11,878 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 17:30:11,879 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 17:30:11,880 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 17:30:11,881 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 17:30:11,882 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 17:30:11,882 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 17:30:11,883 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 17:30:11,883 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 17:30:11,883 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 17:30:11,884 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 17:30:11,885 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 17:30:11,885 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 17:30:11,886 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 17:30:11,886 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 17:30:11,888 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 17:30:11,888 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 17:30:11,889 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 17:30:11,890 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 17:30:11,891 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 17:30:11,891 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 17:30:11,891 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 17:30:11,892 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 17:30:11,892 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 17:30:11,893 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 17:30:11,893 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 17:30:11,894 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 17:30:11,894 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 17:30:11,894 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 17:30:11,894 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 17:30:11,894 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 17:30:11,895 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 17:30:11,895 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 17:30:11,896 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b82c857e-5c9e-4dcc-a815-46d5ac71f438/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-08 17:30:11,903 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 17:30:11,903 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 17:30:11,903 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 17:30:11,904 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 17:30:11,904 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 17:30:11,904 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 17:30:11,904 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 17:30:11,904 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 17:30:11,905 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 17:30:11,905 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 17:30:11,905 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 17:30:11,905 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 17:30:11,905 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 17:30:11,905 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 17:30:11,905 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 17:30:11,906 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 17:30:11,906 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 17:30:11,906 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 17:30:11,906 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 17:30:11,906 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 17:30:11,906 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 17:30:11,906 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 17:30:11,907 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 17:30:11,907 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 17:30:11,907 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 17:30:11,907 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 17:30:11,907 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 17:30:11,907 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 17:30:11,907 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 17:30:11,907 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 17:30:11,908 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_b82c857e-5c9e-4dcc-a815-46d5ac71f438/bin-2019/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 -> 37aa7dd2e80998c2241e95adb0e8008dc0337fe8 [2018-12-08 17:30:11,929 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 17:30:11,936 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 17:30:11,938 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 17:30:11,939 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 17:30:11,939 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 17:30:11,940 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b82c857e-5c9e-4dcc-a815-46d5ac71f438/bin-2019/uautomizer/../../sv-benchmarks/c/loop-lit/jm2006_true-unreach-call_true-termination.c.i [2018-12-08 17:30:11,975 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b82c857e-5c9e-4dcc-a815-46d5ac71f438/bin-2019/uautomizer/data/46a89351d/14e65075cc6142a6ac00d83f641b84d1/FLAG2597c116a [2018-12-08 17:30:12,333 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 17:30:12,333 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b82c857e-5c9e-4dcc-a815-46d5ac71f438/sv-benchmarks/c/loop-lit/jm2006_true-unreach-call_true-termination.c.i [2018-12-08 17:30:12,336 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b82c857e-5c9e-4dcc-a815-46d5ac71f438/bin-2019/uautomizer/data/46a89351d/14e65075cc6142a6ac00d83f641b84d1/FLAG2597c116a [2018-12-08 17:30:12,711 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b82c857e-5c9e-4dcc-a815-46d5ac71f438/bin-2019/uautomizer/data/46a89351d/14e65075cc6142a6ac00d83f641b84d1 [2018-12-08 17:30:12,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 17:30:12,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 17:30:12,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 17:30:12,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 17:30:12,718 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 17:30:12,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 05:30:12" (1/1) ... [2018-12-08 17:30:12,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dd40c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:30:12, skipping insertion in model container [2018-12-08 17:30:12,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 05:30:12" (1/1) ... [2018-12-08 17:30:12,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 17:30:12,739 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 17:30:12,824 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 17:30:12,826 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 17:30:12,835 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 17:30:12,843 INFO L195 MainTranslator]: Completed translation [2018-12-08 17:30:12,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:30:12 WrapperNode [2018-12-08 17:30:12,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 17:30:12,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 17:30:12,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 17:30:12,844 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 17:30:12,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:30:12" (1/1) ... [2018-12-08 17:30:12,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:30:12" (1/1) ... [2018-12-08 17:30:12,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 17:30:12,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 17:30:12,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 17:30:12,857 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 17:30:12,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:30:12" (1/1) ... [2018-12-08 17:30:12,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:30:12" (1/1) ... [2018-12-08 17:30:12,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:30:12" (1/1) ... [2018-12-08 17:30:12,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:30:12" (1/1) ... [2018-12-08 17:30:12,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:30:12" (1/1) ... [2018-12-08 17:30:12,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:30:12" (1/1) ... [2018-12-08 17:30:12,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:30:12" (1/1) ... [2018-12-08 17:30:12,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 17:30:12,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 17:30:12,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 17:30:12,869 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 17:30:12,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:30:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b82c857e-5c9e-4dcc-a815-46d5ac71f438/bin-2019/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 [2018-12-08 17:30:12,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 17:30:12,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 17:30:12,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 17:30:12,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 17:30:12,933 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 17:30:12,933 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 17:30:12,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-08 17:30:12,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-08 17:30:13,024 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 17:30:13,024 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-08 17:30:13,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:30:13 BoogieIcfgContainer [2018-12-08 17:30:13,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 17:30:13,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 17:30:13,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 17:30:13,027 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 17:30:13,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 05:30:12" (1/3) ... [2018-12-08 17:30:13,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ff4f5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 05:30:13, skipping insertion in model container [2018-12-08 17:30:13,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:30:12" (2/3) ... [2018-12-08 17:30:13,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ff4f5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 05:30:13, skipping insertion in model container [2018-12-08 17:30:13,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:30:13" (3/3) ... [2018-12-08 17:30:13,030 INFO L112 eAbstractionObserver]: Analyzing ICFG jm2006_true-unreach-call_true-termination.c.i [2018-12-08 17:30:13,039 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 17:30:13,044 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 17:30:13,054 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 17:30:13,071 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 17:30:13,072 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 17:30:13,072 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 17:30:13,072 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 17:30:13,072 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 17:30:13,072 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 17:30:13,072 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 17:30:13,072 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 17:30:13,072 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 17:30:13,082 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-12-08 17:30:13,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-08 17:30:13,086 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:30:13,086 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:30:13,087 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:30:13,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:30:13,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1912775084, now seen corresponding path program 1 times [2018-12-08 17:30:13,092 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:30:13,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:30:13,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:30:13,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:30:13,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:30:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:30:13,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:30:13,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 17:30:13,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 17:30:13,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 17:30:13,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 17:30:13,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 17:30:13,173 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-12-08 17:30:13,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:30:13,185 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2018-12-08 17:30:13,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 17:30:13,186 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-12-08 17:30:13,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:30:13,190 INFO L225 Difference]: With dead ends: 33 [2018-12-08 17:30:13,190 INFO L226 Difference]: Without dead ends: 13 [2018-12-08 17:30:13,192 INFO L631 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 [2018-12-08 17:30:13,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-08 17:30:13,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-12-08 17:30:13,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-08 17:30:13,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-12-08 17:30:13,212 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2018-12-08 17:30:13,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:30:13,212 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-12-08 17:30:13,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 17:30:13,212 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-12-08 17:30:13,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-08 17:30:13,212 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:30:13,213 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:30:13,213 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:30:13,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:30:13,213 INFO L82 PathProgramCache]: Analyzing trace with hash -2027291688, now seen corresponding path program 1 times [2018-12-08 17:30:13,213 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:30:13,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:30:13,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:30:13,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:30:13,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:30:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:30:13,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:30:13,372 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 17:30:13,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-08 17:30:13,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-08 17:30:13,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-08 17:30:13,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-08 17:30:13,374 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-12-08 17:30:13,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:30:13,464 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-12-08 17:30:13,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-08 17:30:13,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-12-08 17:30:13,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:30:13,465 INFO L225 Difference]: With dead ends: 20 [2018-12-08 17:30:13,465 INFO L226 Difference]: Without dead ends: 14 [2018-12-08 17:30:13,466 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-12-08 17:30:13,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-08 17:30:13,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-08 17:30:13,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-08 17:30:13,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-12-08 17:30:13,468 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-12-08 17:30:13,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:30:13,468 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-12-08 17:30:13,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-08 17:30:13,469 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-12-08 17:30:13,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-08 17:30:13,469 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:30:13,469 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:30:13,469 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:30:13,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:30:13,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1190399537, now seen corresponding path program 1 times [2018-12-08 17:30:13,469 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:30:13,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:30:13,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:30:13,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:30:13,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:30:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:30:13,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:30:13,565 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 17:30:13,565 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b82c857e-5c9e-4dcc-a815-46d5ac71f438/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 17:30:13,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:30:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:30:13,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:30:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:30:13,643 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 17:30:13,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2018-12-08 17:30:13,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-08 17:30:13,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-08 17:30:13,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-12-08 17:30:13,644 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 10 states. [2018-12-08 17:30:13,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:30:13,693 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-12-08 17:30:13,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 17:30:13,693 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2018-12-08 17:30:13,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:30:13,693 INFO L225 Difference]: With dead ends: 21 [2018-12-08 17:30:13,693 INFO L226 Difference]: Without dead ends: 15 [2018-12-08 17:30:13,694 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-12-08 17:30:13,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-08 17:30:13,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-08 17:30:13,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-08 17:30:13,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-12-08 17:30:13,696 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-12-08 17:30:13,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:30:13,696 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-12-08 17:30:13,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-08 17:30:13,696 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-12-08 17:30:13,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-08 17:30:13,697 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:30:13,697 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:30:13,697 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:30:13,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:30:13,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1016546632, now seen corresponding path program 2 times [2018-12-08 17:30:13,697 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:30:13,697 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:30:13,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:30:13,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:30:13,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:30:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:30:13,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:30:13,770 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 17:30:13,770 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b82c857e-5c9e-4dcc-a815-46d5ac71f438/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 17:30:13,779 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-08 17:30:13,785 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-08 17:30:13,785 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 17:30:13,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:30:13,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:30:13,840 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 17:30:13,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2018-12-08 17:30:13,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-08 17:30:13,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-08 17:30:13,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-12-08 17:30:13,841 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 11 states. [2018-12-08 17:30:13,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:30:13,935 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-12-08 17:30:13,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-08 17:30:13,935 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2018-12-08 17:30:13,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:30:13,936 INFO L225 Difference]: With dead ends: 25 [2018-12-08 17:30:13,936 INFO L226 Difference]: Without dead ends: 17 [2018-12-08 17:30:13,936 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-12-08 17:30:13,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-12-08 17:30:13,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-12-08 17:30:13,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-08 17:30:13,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-12-08 17:30:13,939 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-12-08 17:30:13,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:30:13,939 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-12-08 17:30:13,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-08 17:30:13,939 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-12-08 17:30:13,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-08 17:30:13,940 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:30:13,940 INFO L402 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:30:13,940 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:30:13,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:30:13,940 INFO L82 PathProgramCache]: Analyzing trace with hash -353156712, now seen corresponding path program 3 times [2018-12-08 17:30:13,940 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:30:13,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:30:13,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:30:13,941 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 17:30:13,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:30:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:30:14,038 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-08 17:30:14,038 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 17:30:14,038 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b82c857e-5c9e-4dcc-a815-46d5ac71f438/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 17:30:14,044 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-08 17:30:14,050 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-08 17:30:14,050 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 17:30:14,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:30:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:30:14,125 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 17:30:14,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 14 [2018-12-08 17:30:14,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-08 17:30:14,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-08 17:30:14,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-12-08 17:30:14,126 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 14 states. [2018-12-08 17:30:14,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:30:14,239 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2018-12-08 17:30:14,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-08 17:30:14,239 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2018-12-08 17:30:14,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:30:14,239 INFO L225 Difference]: With dead ends: 20 [2018-12-08 17:30:14,239 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 17:30:14,240 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2018-12-08 17:30:14,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 17:30:14,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 17:30:14,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 17:30:14,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 17:30:14,240 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-12-08 17:30:14,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:30:14,240 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 17:30:14,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-08 17:30:14,241 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 17:30:14,241 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 17:30:14,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-08 17:30:14,292 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-08 17:30:14,292 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-08 17:30:14,292 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-08 17:30:14,292 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-08 17:30:14,292 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-08 17:30:14,292 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-08 17:30:14,292 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 10 25) the Hoare annotation is: true [2018-12-08 17:30:14,292 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 25) no Hoare annotation was computed. [2018-12-08 17:30:14,293 INFO L444 ceAbstractionStarter]: At program point L22(line 22) the Hoare annotation is: (and (<= 0 main_~y~0) (<= main_~y~0 0)) [2018-12-08 17:30:14,293 INFO L448 ceAbstractionStarter]: For program point L21(lines 21 23) no Hoare annotation was computed. [2018-12-08 17:30:14,293 INFO L444 ceAbstractionStarter]: At program point L17-2(lines 17 20) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~y~0)) (.cse0 (+ main_~x~0 main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2018-12-08 17:30:14,293 INFO L448 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-12-08 17:30:14,293 INFO L448 ceAbstractionStarter]: For program point L17-3(lines 10 25) no Hoare annotation was computed. [2018-12-08 17:30:14,293 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 25) no Hoare annotation was computed. [2018-12-08 17:30:14,293 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-12-08 17:30:14,293 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-12-08 17:30:14,293 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-12-08 17:30:14,293 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-12-08 17:30:14,293 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-12-08 17:30:14,293 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-12-08 17:30:14,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 05:30:14 BoogieIcfgContainer [2018-12-08 17:30:14,301 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 17:30:14,301 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 17:30:14,301 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 17:30:14,301 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 17:30:14,301 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:30:13" (3/4) ... [2018-12-08 17:30:14,304 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 17:30:14,307 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 17:30:14,308 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 17:30:14,308 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-08 17:30:14,310 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-12-08 17:30:14,310 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-08 17:30:14,310 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 17:30:14,333 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b82c857e-5c9e-4dcc-a815-46d5ac71f438/bin-2019/uautomizer/witness.graphml [2018-12-08 17:30:14,334 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 17:30:14,334 INFO L168 Benchmark]: Toolchain (without parser) took 1620.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 956.0 MB in the beginning and 866.2 MB in the end (delta: 89.8 MB). Peak memory consumption was 221.9 MB. Max. memory is 11.5 GB. [2018-12-08 17:30:14,335 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:30:14,335 INFO L168 Benchmark]: CACSL2BoogieTranslator took 128.54 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 17:30:14,335 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.59 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:30:14,336 INFO L168 Benchmark]: Boogie Preprocessor took 11.61 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:30:14,336 INFO L168 Benchmark]: RCFGBuilder took 155.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -164.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2018-12-08 17:30:14,336 INFO L168 Benchmark]: TraceAbstraction took 1276.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 866.2 MB in the end (delta: 243.8 MB). Peak memory consumption was 243.8 MB. Max. memory is 11.5 GB. [2018-12-08 17:30:14,336 INFO L168 Benchmark]: Witness Printer took 32.58 ms. Allocated memory is still 1.2 GB. Free memory is still 866.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:30:14,338 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 128.54 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 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 12.59 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.61 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 155.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -164.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1276.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 866.2 MB in the end (delta: 243.8 MB). Peak memory consumption was 243.8 MB. Max. memory is 11.5 GB. * Witness Printer took 32.58 ms. Allocated memory is still 1.2 GB. Free memory is still 866.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: x + j <= i + y && i + y <= x + j - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 56 SDtfs, 26 SDslu, 188 SDs, 0 SdLazy, 210 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 34 SyntacticMatches, 10 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 24 NumberOfFragments, 27 HoareAnnotationTreeSize, 13 FomulaSimplifications, 115 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 145 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 8268 SizeOfPredicates, 15 NumberOfNonLiveVariables, 146 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1/28 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...