./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gj2007b_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_4707263e-cacd-4d79-b272-76e409536bb6/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4707263e-cacd-4d79-b272-76e409536bb6/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4707263e-cacd-4d79-b272-76e409536bb6/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4707263e-cacd-4d79-b272-76e409536bb6/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/gj2007b_true-unreach-call_true-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_4707263e-cacd-4d79-b272-76e409536bb6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4707263e-cacd-4d79-b272-76e409536bb6/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 1e17546c38a51643b6e392ce04436e766214299e ...................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 08:02:35,859 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 08:02:35,860 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 08:02:35,866 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 08:02:35,866 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 08:02:35,866 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 08:02:35,867 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 08:02:35,868 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 08:02:35,868 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 08:02:35,869 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 08:02:35,869 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 08:02:35,869 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 08:02:35,870 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 08:02:35,870 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 08:02:35,871 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 08:02:35,871 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 08:02:35,871 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 08:02:35,872 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 08:02:35,873 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 08:02:35,874 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 08:02:35,874 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 08:02:35,875 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 08:02:35,876 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 08:02:35,876 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 08:02:35,876 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 08:02:35,877 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 08:02:35,877 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 08:02:35,877 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 08:02:35,878 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 08:02:35,878 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 08:02:35,878 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 08:02:35,879 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 08:02:35,879 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 08:02:35,879 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 08:02:35,879 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 08:02:35,880 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 08:02:35,880 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4707263e-cacd-4d79-b272-76e409536bb6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-01 08:02:35,887 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 08:02:35,887 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 08:02:35,888 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 08:02:35,888 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 08:02:35,888 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 08:02:35,888 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 08:02:35,888 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 08:02:35,888 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 08:02:35,888 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 08:02:35,889 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 08:02:35,889 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 08:02:35,889 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 08:02:35,889 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 08:02:35,889 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 08:02:35,889 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 08:02:35,889 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 08:02:35,889 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 08:02:35,889 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 08:02:35,889 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 08:02:35,889 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 08:02:35,889 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 08:02:35,890 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 08:02:35,890 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 08:02:35,890 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 08:02:35,890 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 08:02:35,890 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 08:02:35,890 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 08:02:35,890 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 08:02:35,890 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 08:02:35,890 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 08:02:35,890 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_4707263e-cacd-4d79-b272-76e409536bb6/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 -> 1e17546c38a51643b6e392ce04436e766214299e [2018-12-01 08:02:35,908 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 08:02:35,917 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 08:02:35,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 08:02:35,921 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 08:02:35,921 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 08:02:35,922 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4707263e-cacd-4d79-b272-76e409536bb6/bin-2019/uautomizer/../../sv-benchmarks/c/loop-lit/gj2007b_true-unreach-call_true-termination.c.i [2018-12-01 08:02:35,958 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4707263e-cacd-4d79-b272-76e409536bb6/bin-2019/uautomizer/data/a57f2bbf4/db484b36b67748d6a7ee3cb5a33c0aa8/FLAGbc1738e77 [2018-12-01 08:02:36,363 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 08:02:36,363 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4707263e-cacd-4d79-b272-76e409536bb6/sv-benchmarks/c/loop-lit/gj2007b_true-unreach-call_true-termination.c.i [2018-12-01 08:02:36,366 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4707263e-cacd-4d79-b272-76e409536bb6/bin-2019/uautomizer/data/a57f2bbf4/db484b36b67748d6a7ee3cb5a33c0aa8/FLAGbc1738e77 [2018-12-01 08:02:36,375 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4707263e-cacd-4d79-b272-76e409536bb6/bin-2019/uautomizer/data/a57f2bbf4/db484b36b67748d6a7ee3cb5a33c0aa8 [2018-12-01 08:02:36,376 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 08:02:36,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 08:02:36,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 08:02:36,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 08:02:36,381 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 08:02:36,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 08:02:36" (1/1) ... [2018-12-01 08:02:36,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d388261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:02:36, skipping insertion in model container [2018-12-01 08:02:36,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 08:02:36" (1/1) ... [2018-12-01 08:02:36,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 08:02:36,397 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 08:02:36,489 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 08:02:36,491 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 08:02:36,499 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 08:02:36,508 INFO L195 MainTranslator]: Completed translation [2018-12-01 08:02:36,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:02:36 WrapperNode [2018-12-01 08:02:36,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 08:02:36,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 08:02:36,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 08:02:36,509 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 08:02:36,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:02:36" (1/1) ... [2018-12-01 08:02:36,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:02:36" (1/1) ... [2018-12-01 08:02:36,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 08:02:36,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 08:02:36,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 08:02:36,521 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 08:02:36,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:02:36" (1/1) ... [2018-12-01 08:02:36,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:02:36" (1/1) ... [2018-12-01 08:02:36,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:02:36" (1/1) ... [2018-12-01 08:02:36,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:02:36" (1/1) ... [2018-12-01 08:02:36,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:02:36" (1/1) ... [2018-12-01 08:02:36,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:02:36" (1/1) ... [2018-12-01 08:02:36,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:02:36" (1/1) ... [2018-12-01 08:02:36,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 08:02:36,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 08:02:36,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 08:02:36,562 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 08:02:36,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:02:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4707263e-cacd-4d79-b272-76e409536bb6/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 [2018-12-01 08:02:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 08:02:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 08:02:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 08:02:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 08:02:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 08:02:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 08:02:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-01 08:02:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-01 08:02:36,673 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 08:02:36,673 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-01 08:02:36,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 08:02:36 BoogieIcfgContainer [2018-12-01 08:02:36,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 08:02:36,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 08:02:36,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 08:02:36,676 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 08:02:36,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 08:02:36" (1/3) ... [2018-12-01 08:02:36,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b384f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 08:02:36, skipping insertion in model container [2018-12-01 08:02:36,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:02:36" (2/3) ... [2018-12-01 08:02:36,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b384f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 08:02:36, skipping insertion in model container [2018-12-01 08:02:36,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 08:02:36" (3/3) ... [2018-12-01 08:02:36,678 INFO L112 eAbstractionObserver]: Analyzing ICFG gj2007b_true-unreach-call_true-termination.c.i [2018-12-01 08:02:36,684 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 08:02:36,688 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 08:02:36,698 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 08:02:36,716 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 08:02:36,716 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 08:02:36,716 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 08:02:36,716 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 08:02:36,716 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 08:02:36,717 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 08:02:36,717 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 08:02:36,717 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 08:02:36,717 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 08:02:36,726 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-12-01 08:02:36,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-01 08:02:36,729 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 08:02:36,730 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 08:02:36,731 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 08:02:36,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 08:02:36,734 INFO L82 PathProgramCache]: Analyzing trace with hash -2009018560, now seen corresponding path program 1 times [2018-12-01 08:02:36,735 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 08:02:36,735 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 08:02:36,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 08:02:36,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 08:02:36,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 08:02:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 08:02:36,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 08:02:36,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 08:02:36,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 08:02:36,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-01 08:02:36,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-01 08:02:36,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 08:02:36,811 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-12-01 08:02:36,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 08:02:36,823 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2018-12-01 08:02:36,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-01 08:02:36,824 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-01 08:02:36,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 08:02:36,829 INFO L225 Difference]: With dead ends: 34 [2018-12-01 08:02:36,829 INFO L226 Difference]: Without dead ends: 16 [2018-12-01 08:02:36,831 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 [2018-12-01 08:02:36,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-12-01 08:02:36,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-12-01 08:02:36,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-01 08:02:36,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-12-01 08:02:36,853 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2018-12-01 08:02:36,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 08:02:36,853 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-12-01 08:02:36,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-01 08:02:36,853 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-12-01 08:02:36,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-01 08:02:36,854 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 08:02:36,854 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 08:02:36,854 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 08:02:36,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 08:02:36,854 INFO L82 PathProgramCache]: Analyzing trace with hash -2019177291, now seen corresponding path program 1 times [2018-12-01 08:02:36,854 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 08:02:36,855 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 08:02:36,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 08:02:36,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 08:02:36,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 08:02:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 08:02:36,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 08:02:36,904 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 08:02:36,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-01 08:02:36,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-01 08:02:36,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 08:02:36,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-01 08:02:36,906 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2018-12-01 08:02:36,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 08:02:36,931 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2018-12-01 08:02:36,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 08:02:36,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-12-01 08:02:36,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 08:02:36,932 INFO L225 Difference]: With dead ends: 27 [2018-12-01 08:02:36,932 INFO L226 Difference]: Without dead ends: 25 [2018-12-01 08:02:36,933 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-01 08:02:36,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-12-01 08:02:36,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-12-01 08:02:36,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-01 08:02:36,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-12-01 08:02:36,937 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 10 [2018-12-01 08:02:36,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 08:02:36,937 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-12-01 08:02:36,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-01 08:02:36,937 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-12-01 08:02:36,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-01 08:02:36,938 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 08:02:36,938 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 08:02:36,938 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 08:02:36,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 08:02:36,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1543015754, now seen corresponding path program 1 times [2018-12-01 08:02:36,938 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 08:02:36,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 08:02:36,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 08:02:36,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 08:02:36,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 08:02:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 08:02:36,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 08:02:36,968 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 08:02:36,968 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4707263e-cacd-4d79-b272-76e409536bb6/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 [2018-12-01 08:02:36,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 08:02:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 08:02:36,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 08:02:37,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 08:02:37,024 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 08:02:37,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-12-01 08:02:37,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 08:02:37,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 08:02:37,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-01 08:02:37,025 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 6 states. [2018-12-01 08:02:37,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 08:02:37,062 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2018-12-01 08:02:37,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 08:02:37,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-12-01 08:02:37,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 08:02:37,064 INFO L225 Difference]: With dead ends: 30 [2018-12-01 08:02:37,064 INFO L226 Difference]: Without dead ends: 26 [2018-12-01 08:02:37,064 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-12-01 08:02:37,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-01 08:02:37,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 18. [2018-12-01 08:02:37,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-01 08:02:37,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-12-01 08:02:37,067 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2018-12-01 08:02:37,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 08:02:37,067 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-12-01 08:02:37,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 08:02:37,067 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-12-01 08:02:37,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-01 08:02:37,067 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 08:02:37,068 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 08:02:37,068 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 08:02:37,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 08:02:37,068 INFO L82 PathProgramCache]: Analyzing trace with hash -595645528, now seen corresponding path program 1 times [2018-12-01 08:02:37,068 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 08:02:37,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 08:02:37,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 08:02:37,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 08:02:37,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 08:02:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 08:02:37,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 08:02:37,114 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 08:02:37,114 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4707263e-cacd-4d79-b272-76e409536bb6/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 [2018-12-01 08:02:37,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 08:02:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 08:02:37,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 08:02:37,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 08:02:37,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-01 08:02:37,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-12-01 08:02:37,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-01 08:02:37,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-01 08:02:37,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-12-01 08:02:37,196 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 11 states. [2018-12-01 08:02:37,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 08:02:37,305 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-12-01 08:02:37,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-01 08:02:37,306 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2018-12-01 08:02:37,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 08:02:37,307 INFO L225 Difference]: With dead ends: 42 [2018-12-01 08:02:37,307 INFO L226 Difference]: Without dead ends: 28 [2018-12-01 08:02:37,308 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-12-01 08:02:37,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-01 08:02:37,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2018-12-01 08:02:37,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-01 08:02:37,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2018-12-01 08:02:37,313 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 15 [2018-12-01 08:02:37,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 08:02:37,313 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2018-12-01 08:02:37,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-01 08:02:37,313 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2018-12-01 08:02:37,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-01 08:02:37,314 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 08:02:37,314 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 08:02:37,314 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 08:02:37,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 08:02:37,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1165348024, now seen corresponding path program 1 times [2018-12-01 08:02:37,314 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 08:02:37,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 08:02:37,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 08:02:37,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 08:02:37,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 08:02:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 08:02:37,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-01 08:02:37,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 08:02:37,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-01 08:02:37,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 08:02:37,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 08:02:37,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-01 08:02:37,351 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 6 states. [2018-12-01 08:02:37,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 08:02:37,378 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2018-12-01 08:02:37,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-01 08:02:37,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-12-01 08:02:37,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 08:02:37,378 INFO L225 Difference]: With dead ends: 26 [2018-12-01 08:02:37,379 INFO L226 Difference]: Without dead ends: 0 [2018-12-01 08:02:37,379 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-12-01 08:02:37,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-01 08:02:37,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-01 08:02:37,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-01 08:02:37,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-01 08:02:37,379 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-12-01 08:02:37,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 08:02:37,379 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 08:02:37,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 08:02:37,379 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-01 08:02:37,380 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-01 08:02:37,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-01 08:02:37,393 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-01 08:02:37,458 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-01 08:02:37,458 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-01 08:02:37,458 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-01 08:02:37,458 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-01 08:02:37,458 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-01 08:02:37,458 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-01 08:02:37,459 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2018-12-01 08:02:37,459 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2018-12-01 08:02:37,459 INFO L448 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-12-01 08:02:37,459 INFO L444 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 (<= 0 main_~m~0)) (.cse1 (<= 0 main_~x~0))) (or (and (<= main_~n~0 0) .cse0 .cse1) (and .cse0 (<= (+ main_~m~0 1) main_~n~0) .cse1))) [2018-12-01 08:02:37,459 INFO L448 ceAbstractionStarter]: For program point L15(lines 15 17) no Hoare annotation was computed. [2018-12-01 08:02:37,459 INFO L448 ceAbstractionStarter]: For program point L15-2(lines 15 17) no Hoare annotation was computed. [2018-12-01 08:02:37,459 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 23) no Hoare annotation was computed. [2018-12-01 08:02:37,459 INFO L444 ceAbstractionStarter]: At program point L14-2(lines 14 19) the Hoare annotation is: (let ((.cse0 (<= 0 main_~m~0)) (.cse1 (<= 0 main_~x~0))) (or (and (<= main_~n~0 0) .cse0 .cse1) (and .cse0 (<= (+ main_~m~0 1) main_~n~0) .cse1))) [2018-12-01 08:02:37,459 INFO L444 ceAbstractionStarter]: At program point L14-3(lines 14 19) the Hoare annotation is: (let ((.cse0 (<= 0 main_~m~0)) (.cse1 (<= 0 main_~x~0))) (or (and (<= main_~n~0 0) .cse0 .cse1) (and .cse0 (<= (+ main_~m~0 1) main_~n~0) .cse1))) [2018-12-01 08:02:37,459 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-12-01 08:02:37,460 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-12-01 08:02:37,460 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-12-01 08:02:37,460 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-12-01 08:02:37,460 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-12-01 08:02:37,460 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-12-01 08:02:37,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 08:02:37 BoogieIcfgContainer [2018-12-01 08:02:37,468 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 08:02:37,469 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 08:02:37,469 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 08:02:37,469 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 08:02:37,469 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 08:02:36" (3/4) ... [2018-12-01 08:02:37,471 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-01 08:02:37,475 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-01 08:02:37,475 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-01 08:02:37,475 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-01 08:02:37,478 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-01 08:02:37,478 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-01 08:02:37,478 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-01 08:02:37,502 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_4707263e-cacd-4d79-b272-76e409536bb6/bin-2019/uautomizer/witness.graphml [2018-12-01 08:02:37,502 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 08:02:37,503 INFO L168 Benchmark]: Toolchain (without parser) took 1125.99 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 954.4 MB in the beginning and 950.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 101.7 MB. Max. memory is 11.5 GB. [2018-12-01 08:02:37,504 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 08:02:37,504 INFO L168 Benchmark]: CACSL2BoogieTranslator took 130.76 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 08:02:37,504 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.64 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 08:02:37,504 INFO L168 Benchmark]: Boogie Preprocessor took 41.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -160.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2018-12-01 08:02:37,504 INFO L168 Benchmark]: RCFGBuilder took 111.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. [2018-12-01 08:02:37,505 INFO L168 Benchmark]: TraceAbstraction took 794.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 953.4 MB in the end (delta: 131.1 MB). Peak memory consumption was 131.1 MB. Max. memory is 11.5 GB. [2018-12-01 08:02:37,505 INFO L168 Benchmark]: Witness Printer took 33.69 ms. Allocated memory is still 1.1 GB. Free memory was 953.4 MB in the beginning and 950.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-01 08:02:37,506 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 130.76 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 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 11.64 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -160.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 111.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 794.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 953.4 MB in the end (delta: 131.1 MB). Peak memory consumption was 131.1 MB. Max. memory is 11.5 GB. * Witness Printer took 33.69 ms. Allocated memory is still 1.1 GB. Free memory was 953.4 MB in the beginning and 950.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. 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: 14]: Loop Invariant Derived loop invariant: ((n <= 0 && 0 <= m) && 0 <= x) || ((0 <= m && m + 1 <= n) && 0 <= x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 75 SDtfs, 47 SDslu, 196 SDs, 0 SdLazy, 182 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=2, 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, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 17 PreInvPairs, 28 NumberOfFragments, 74 HoareAnnotationTreeSize, 17 FomulaSimplifications, 128 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 47 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2718 SizeOfPredicates, 6 NumberOfNonLiveVariables, 73 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 10/13 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...