./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/array_true-unreach-call3_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_004fb031-858f-490c-874b-2bab74d365f7/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_004fb031-858f-490c-874b-2bab74d365f7/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_004fb031-858f-490c-874b-2bab74d365f7/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_004fb031-858f-490c-874b-2bab74d365f7/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/array_true-unreach-call3_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_004fb031-858f-490c-874b-2bab74d365f7/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_004fb031-858f-490c-874b-2bab74d365f7/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 4090a90876c90ba415ea4bea59e2b23309410708 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 21:34:27,754 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 21:34:27,756 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 21:34:27,764 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 21:34:27,764 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 21:34:27,765 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 21:34:27,766 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 21:34:27,767 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 21:34:27,768 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 21:34:27,769 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 21:34:27,769 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 21:34:27,770 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 21:34:27,770 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 21:34:27,771 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 21:34:27,772 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 21:34:27,772 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 21:34:27,773 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 21:34:27,774 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 21:34:27,775 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 21:34:27,776 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 21:34:27,777 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 21:34:27,778 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 21:34:27,780 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 21:34:27,780 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 21:34:27,780 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 21:34:27,780 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 21:34:27,781 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 21:34:27,782 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 21:34:27,782 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 21:34:27,783 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 21:34:27,783 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 21:34:27,784 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 21:34:27,784 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 21:34:27,784 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 21:34:27,785 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 21:34:27,785 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 21:34:27,785 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_004fb031-858f-490c-874b-2bab74d365f7/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-22 21:34:27,796 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 21:34:27,796 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 21:34:27,797 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 21:34:27,797 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 21:34:27,797 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-22 21:34:27,797 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-22 21:34:27,797 INFO L133 SettingsManager]: * Use SBE=true [2018-11-22 21:34:27,798 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 21:34:27,798 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 21:34:27,798 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 21:34:27,798 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 21:34:27,798 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 21:34:27,798 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 21:34:27,798 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 21:34:27,798 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 21:34:27,799 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 21:34:27,799 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 21:34:27,799 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 21:34:27,799 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 21:34:27,799 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 21:34:27,799 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 21:34:27,799 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 21:34:27,800 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 21:34:27,800 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 21:34:27,800 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 21:34:27,800 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 21:34:27,800 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 21:34:27,800 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-22 21:34:27,800 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 21:34:27,800 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-22 21:34:27,801 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_004fb031-858f-490c-874b-2bab74d365f7/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 -> 4090a90876c90ba415ea4bea59e2b23309410708 [2018-11-22 21:34:27,825 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 21:34:27,834 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 21:34:27,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 21:34:27,838 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 21:34:27,839 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 21:34:27,839 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_004fb031-858f-490c-874b-2bab74d365f7/bin-2019/uautomizer/../../sv-benchmarks/c/loop-acceleration/array_true-unreach-call3_true-termination.i [2018-11-22 21:34:27,887 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_004fb031-858f-490c-874b-2bab74d365f7/bin-2019/uautomizer/data/a1df0c67c/a282f44bfdef4f61a34c5da97661dedc/FLAG8a4b199c9 [2018-11-22 21:34:28,211 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 21:34:28,212 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_004fb031-858f-490c-874b-2bab74d365f7/sv-benchmarks/c/loop-acceleration/array_true-unreach-call3_true-termination.i [2018-11-22 21:34:28,215 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_004fb031-858f-490c-874b-2bab74d365f7/bin-2019/uautomizer/data/a1df0c67c/a282f44bfdef4f61a34c5da97661dedc/FLAG8a4b199c9 [2018-11-22 21:34:28,645 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_004fb031-858f-490c-874b-2bab74d365f7/bin-2019/uautomizer/data/a1df0c67c/a282f44bfdef4f61a34c5da97661dedc [2018-11-22 21:34:28,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 21:34:28,648 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 21:34:28,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 21:34:28,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 21:34:28,651 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 21:34:28,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:34:28" (1/1) ... [2018-11-22 21:34:28,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64d4648b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:28, skipping insertion in model container [2018-11-22 21:34:28,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:34:28" (1/1) ... [2018-11-22 21:34:28,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 21:34:28,676 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 21:34:28,803 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 21:34:28,805 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 21:34:28,816 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 21:34:28,831 INFO L195 MainTranslator]: Completed translation [2018-11-22 21:34:28,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:28 WrapperNode [2018-11-22 21:34:28,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 21:34:28,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 21:34:28,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 21:34:28,832 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 21:34:28,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:28" (1/1) ... [2018-11-22 21:34:28,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:28" (1/1) ... [2018-11-22 21:34:28,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 21:34:28,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 21:34:28,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 21:34:28,852 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 21:34:28,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:28" (1/1) ... [2018-11-22 21:34:28,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:28" (1/1) ... [2018-11-22 21:34:28,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:28" (1/1) ... [2018-11-22 21:34:28,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:28" (1/1) ... [2018-11-22 21:34:28,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:28" (1/1) ... [2018-11-22 21:34:28,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:28" (1/1) ... [2018-11-22 21:34:28,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:28" (1/1) ... [2018-11-22 21:34:28,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 21:34:28,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 21:34:28,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 21:34:28,866 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 21:34:28,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_004fb031-858f-490c-874b-2bab74d365f7/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 [2018-11-22 21:34:28,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-22 21:34:28,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 21:34:28,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 21:34:28,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-22 21:34:28,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 21:34:28,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 21:34:28,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-22 21:34:28,953 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 21:34:28,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 21:34:28,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-22 21:34:28,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-22 21:34:28,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-22 21:34:29,057 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 21:34:29,057 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-22 21:34:29,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:34:29 BoogieIcfgContainer [2018-11-22 21:34:29,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 21:34:29,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 21:34:29,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 21:34:29,061 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 21:34:29,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:34:28" (1/3) ... [2018-11-22 21:34:29,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76aea743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:34:29, skipping insertion in model container [2018-11-22 21:34:29,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:28" (2/3) ... [2018-11-22 21:34:29,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76aea743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:34:29, skipping insertion in model container [2018-11-22 21:34:29,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:34:29" (3/3) ... [2018-11-22 21:34:29,063 INFO L112 eAbstractionObserver]: Analyzing ICFG array_true-unreach-call3_true-termination.i [2018-11-22 21:34:29,069 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 21:34:29,074 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-22 21:34:29,083 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-22 21:34:29,105 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-22 21:34:29,106 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 21:34:29,106 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 21:34:29,106 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 21:34:29,106 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 21:34:29,106 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 21:34:29,106 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 21:34:29,106 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 21:34:29,106 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 21:34:29,116 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-11-22 21:34:29,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-22 21:34:29,119 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:34:29,120 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:34:29,121 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:34:29,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:34:29,124 INFO L82 PathProgramCache]: Analyzing trace with hash -413900697, now seen corresponding path program 1 times [2018-11-22 21:34:29,126 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:34:29,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:34:29,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:34:29,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:34:29,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:34:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:34:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:34:29,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:34:29,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-22 21:34:29,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-22 21:34:29,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-22 21:34:29,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-22 21:34:29,210 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-11-22 21:34:29,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:34:29,227 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2018-11-22 21:34:29,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-22 21:34:29,228 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-11-22 21:34:29,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:34:29,232 INFO L225 Difference]: With dead ends: 42 [2018-11-22 21:34:29,232 INFO L226 Difference]: Without dead ends: 18 [2018-11-22 21:34:29,234 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 [2018-11-22 21:34:29,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-22 21:34:29,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-22 21:34:29,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-22 21:34:29,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-11-22 21:34:29,262 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2018-11-22 21:34:29,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:34:29,262 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-11-22 21:34:29,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-22 21:34:29,262 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-11-22 21:34:29,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-22 21:34:29,262 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:34:29,262 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:34:29,263 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:34:29,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:34:29,263 INFO L82 PathProgramCache]: Analyzing trace with hash 2053026861, now seen corresponding path program 1 times [2018-11-22 21:34:29,263 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:34:29,263 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:34:29,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:34:29,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:34:29,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:34:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:34:29,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:34:29,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:34:29,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 21:34:29,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 21:34:29,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 21:34:29,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 21:34:29,314 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2018-11-22 21:34:29,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:34:29,351 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-11-22 21:34:29,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 21:34:29,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-11-22 21:34:29,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:34:29,353 INFO L225 Difference]: With dead ends: 35 [2018-11-22 21:34:29,353 INFO L226 Difference]: Without dead ends: 25 [2018-11-22 21:34:29,353 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 21:34:29,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-22 21:34:29,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2018-11-22 21:34:29,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-22 21:34:29,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2018-11-22 21:34:29,358 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2018-11-22 21:34:29,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:34:29,358 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-11-22 21:34:29,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 21:34:29,358 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2018-11-22 21:34:29,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-22 21:34:29,359 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:34:29,359 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:34:29,359 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:34:29,359 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:34:29,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1766388751, now seen corresponding path program 1 times [2018-11-22 21:34:29,360 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:34:29,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:34:29,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:34:29,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:34:29,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:34:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:34:29,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:34:29,418 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 21:34:29,418 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_004fb031-858f-490c-874b-2bab74d365f7/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 [2018-11-22 21:34:29,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:34:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:34:29,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:34:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:34:29,474 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 21:34:29,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-11-22 21:34:29,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-22 21:34:29,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-22 21:34:29,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-22 21:34:29,475 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2018-11-22 21:34:29,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:34:29,546 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2018-11-22 21:34:29,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-22 21:34:29,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-11-22 21:34:29,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:34:29,547 INFO L225 Difference]: With dead ends: 45 [2018-11-22 21:34:29,547 INFO L226 Difference]: Without dead ends: 32 [2018-11-22 21:34:29,547 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-22 21:34:29,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-22 21:34:29,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2018-11-22 21:34:29,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-22 21:34:29,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-11-22 21:34:29,552 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2018-11-22 21:34:29,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:34:29,552 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-11-22 21:34:29,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-22 21:34:29,552 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-11-22 21:34:29,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-22 21:34:29,552 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:34:29,553 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:34:29,553 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:34:29,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:34:29,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1185071985, now seen corresponding path program 2 times [2018-11-22 21:34:29,553 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:34:29,553 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:34:29,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:34:29,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:34:29,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:34:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:34:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:34:29,585 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 21:34:29,585 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_004fb031-858f-490c-874b-2bab74d365f7/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 [2018-11-22 21:34:29,591 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-22 21:34:29,602 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-22 21:34:29,603 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 21:34:29,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:34:29,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-22 21:34:29,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-22 21:34:29,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2018-11-22 21:34:29,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-22 21:34:29,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-22 21:34:29,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-22 21:34:29,679 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2018-11-22 21:34:29,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:34:29,731 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2018-11-22 21:34:29,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-22 21:34:29,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-11-22 21:34:29,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:34:29,732 INFO L225 Difference]: With dead ends: 58 [2018-11-22 21:34:29,732 INFO L226 Difference]: Without dead ends: 36 [2018-11-22 21:34:29,733 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-22 21:34:29,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-22 21:34:29,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2018-11-22 21:34:29,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-22 21:34:29,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-11-22 21:34:29,736 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 18 [2018-11-22 21:34:29,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:34:29,736 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-11-22 21:34:29,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-22 21:34:29,736 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-11-22 21:34:29,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-22 21:34:29,737 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:34:29,737 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:34:29,737 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:34:29,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:34:29,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1923748376, now seen corresponding path program 1 times [2018-11-22 21:34:29,737 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:34:29,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:34:29,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:34:29,738 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 21:34:29,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:34:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:34:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-22 21:34:29,786 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 21:34:29,786 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_004fb031-858f-490c-874b-2bab74d365f7/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 [2018-11-22 21:34:29,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:34:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:34:29,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:34:29,837 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-22 21:34:29,852 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 21:34:29,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-22 21:34:29,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-22 21:34:29,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-22 21:34:29,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-22 21:34:29,853 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 7 states. [2018-11-22 21:34:29,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:34:29,886 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2018-11-22 21:34:29,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-22 21:34:29,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2018-11-22 21:34:29,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:34:29,887 INFO L225 Difference]: With dead ends: 64 [2018-11-22 21:34:29,887 INFO L226 Difference]: Without dead ends: 43 [2018-11-22 21:34:29,887 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-22 21:34:29,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-22 21:34:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2018-11-22 21:34:29,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-22 21:34:29,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2018-11-22 21:34:29,891 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 32 [2018-11-22 21:34:29,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:34:29,891 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2018-11-22 21:34:29,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-22 21:34:29,891 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2018-11-22 21:34:29,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-22 21:34:29,891 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:34:29,892 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:34:29,892 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:34:29,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:34:29,892 INFO L82 PathProgramCache]: Analyzing trace with hash -734480054, now seen corresponding path program 2 times [2018-11-22 21:34:29,892 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:34:29,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:34:29,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:34:29,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:34:29,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:34:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:34:29,957 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-22 21:34:29,958 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 21:34:29,958 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_004fb031-858f-490c-874b-2bab74d365f7/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 21:34:29,968 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-22 21:34:29,982 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-22 21:34:29,983 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 21:34:29,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:34:29,994 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-22 21:34:30,019 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 21:34:30,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-22 21:34:30,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-22 21:34:30,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-22 21:34:30,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-22 21:34:30,020 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 8 states. [2018-11-22 21:34:30,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:34:30,078 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2018-11-22 21:34:30,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-22 21:34:30,078 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2018-11-22 21:34:30,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:34:30,079 INFO L225 Difference]: With dead ends: 75 [2018-11-22 21:34:30,079 INFO L226 Difference]: Without dead ends: 50 [2018-11-22 21:34:30,080 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-22 21:34:30,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-22 21:34:30,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2018-11-22 21:34:30,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-22 21:34:30,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2018-11-22 21:34:30,085 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 34 [2018-11-22 21:34:30,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:34:30,085 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2018-11-22 21:34:30,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-22 21:34:30,085 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2018-11-22 21:34:30,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-22 21:34:30,086 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:34:30,086 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:34:30,086 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:34:30,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:34:30,086 INFO L82 PathProgramCache]: Analyzing trace with hash -308923348, now seen corresponding path program 3 times [2018-11-22 21:34:30,087 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:34:30,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:34:30,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:34:30,087 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 21:34:30,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:34:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:34:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-22 21:34:30,152 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 21:34:30,152 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_004fb031-858f-490c-874b-2bab74d365f7/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 21:34:30,161 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-22 21:34:30,181 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-22 21:34:30,182 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 21:34:30,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:34:30,221 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-11-22 21:34:30,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-22 21:34:30,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2018-11-22 21:34:30,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-22 21:34:30,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-22 21:34:30,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-11-22 21:34:30,236 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 12 states. [2018-11-22 21:34:30,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:34:30,328 INFO L93 Difference]: Finished difference Result 91 states and 106 transitions. [2018-11-22 21:34:30,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-22 21:34:30,329 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2018-11-22 21:34:30,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:34:30,329 INFO L225 Difference]: With dead ends: 91 [2018-11-22 21:34:30,329 INFO L226 Difference]: Without dead ends: 0 [2018-11-22 21:34:30,330 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2018-11-22 21:34:30,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-22 21:34:30,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-22 21:34:30,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-22 21:34:30,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-22 21:34:30,331 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-11-22 21:34:30,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:34:30,331 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 21:34:30,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-22 21:34:30,331 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-22 21:34:30,331 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-22 21:34:30,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-22 21:34:30,372 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-22 21:34:30,373 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-22 21:34:30,373 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-22 21:34:30,373 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-22 21:34:30,373 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-22 21:34:30,373 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-22 21:34:30,373 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-22 21:34:30,373 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 9 23) no Hoare annotation was computed. [2018-11-22 21:34:30,373 INFO L448 ceAbstractionStarter]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2018-11-22 21:34:30,374 INFO L448 ceAbstractionStarter]: For program point L17-3(lines 17 21) no Hoare annotation was computed. [2018-11-22 21:34:30,374 INFO L444 ceAbstractionStarter]: At program point L17-4(lines 17 21) the Hoare annotation is: (<= main_~i~0 1023) [2018-11-22 21:34:30,374 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 9 23) no Hoare annotation was computed. [2018-11-22 21:34:30,374 INFO L444 ceAbstractionStarter]: At program point L17-5(lines 17 21) the Hoare annotation is: (<= main_~i~0 1023) [2018-11-22 21:34:30,374 INFO L448 ceAbstractionStarter]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2018-11-22 21:34:30,374 INFO L451 ceAbstractionStarter]: At program point L13-3(lines 13 15) the Hoare annotation is: true [2018-11-22 21:34:30,374 INFO L448 ceAbstractionStarter]: For program point L13-4(lines 13 15) no Hoare annotation was computed. [2018-11-22 21:34:30,374 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 9 23) the Hoare annotation is: true [2018-11-22 21:34:30,375 INFO L448 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-22 21:34:30,375 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 20) no Hoare annotation was computed. [2018-11-22 21:34:30,375 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-22 21:34:30,375 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-22 21:34:30,376 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-22 21:34:30,376 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-22 21:34:30,376 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-22 21:34:30,376 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-22 21:34:30,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 09:34:30 BoogieIcfgContainer [2018-11-22 21:34:30,384 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 21:34:30,385 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 21:34:30,385 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 21:34:30,385 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 21:34:30,386 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:34:29" (3/4) ... [2018-11-22 21:34:30,389 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-22 21:34:30,394 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-22 21:34:30,394 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-22 21:34:30,394 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-22 21:34:30,398 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-11-22 21:34:30,398 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-22 21:34:30,398 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-22 21:34:30,428 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_004fb031-858f-490c-874b-2bab74d365f7/bin-2019/uautomizer/witness.graphml [2018-11-22 21:34:30,428 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 21:34:30,429 INFO L168 Benchmark]: Toolchain (without parser) took 1781.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 959.1 MB in the beginning and 943.6 MB in the end (delta: 15.5 MB). Peak memory consumption was 170.1 MB. Max. memory is 11.5 GB. [2018-11-22 21:34:30,429 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:34:30,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.47 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-22 21:34:30,430 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.09 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 21:34:30,430 INFO L168 Benchmark]: Boogie Preprocessor took 14.48 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:34:30,430 INFO L168 Benchmark]: RCFGBuilder took 191.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -182.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-22 21:34:30,431 INFO L168 Benchmark]: TraceAbstraction took 1326.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 943.6 MB in the end (delta: 184.7 MB). Peak memory consumption was 184.7 MB. Max. memory is 11.5 GB. [2018-11-22 21:34:30,431 INFO L168 Benchmark]: Witness Printer took 43.26 ms. Allocated memory is still 1.2 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:34:30,433 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 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 183.47 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 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 19.09 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.48 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 191.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -182.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1326.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 943.6 MB in the end (delta: 184.7 MB). Peak memory consumption was 184.7 MB. Max. memory is 11.5 GB. * Witness Printer took 43.26 ms. Allocated memory is still 1.2 GB. Free memory is still 943.6 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: i <= 1023 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 112 SDtfs, 130 SDslu, 232 SDs, 0 SdLazy, 218 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=6, 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, 7 MinimizatonAttempts, 16 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 22 PreInvPairs, 46 NumberOfFragments, 12 HoareAnnotationTreeSize, 22 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 44 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 299 NumberOfCodeBlocks, 279 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 11683 SizeOfPredicates, 7 NumberOfNonLiveVariables, 356 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 137/218 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...