./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/copy-partial-3-u_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-multidimensional/copy-partial-3-u_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/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 269d8c78f03cf287c7b740c1cbaca497af69bf0a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 13:01:16,859 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:01:16,860 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:01:16,868 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:01:16,868 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:01:16,868 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:01:16,869 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:01:16,870 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:01:16,871 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:01:16,872 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:01:16,872 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:01:16,873 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:01:16,873 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:01:16,874 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:01:16,875 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:01:16,875 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:01:16,876 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:01:16,877 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:01:16,878 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:01:16,879 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:01:16,880 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:01:16,881 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:01:16,883 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:01:16,883 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:01:16,883 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:01:16,883 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:01:16,884 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:01:16,885 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:01:16,885 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:01:16,886 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:01:16,886 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:01:16,887 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:01:16,887 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:01:16,887 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:01:16,888 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:01:16,888 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:01:16,888 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 13:01:16,898 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:01:16,898 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:01:16,899 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 13:01:16,899 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 13:01:16,899 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:01:16,899 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:01:16,900 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:01:16,900 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:01:16,900 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 13:01:16,900 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 13:01:16,900 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 13:01:16,900 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:01:16,901 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 13:01:16,901 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 13:01:16,901 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 13:01:16,901 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 13:01:16,901 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:01:16,901 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:01:16,901 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 13:01:16,902 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:01:16,902 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:01:16,902 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 13:01:16,902 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 13:01:16,902 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:01:16,902 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:01:16,902 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 13:01:16,902 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 13:01:16,903 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 13:01:16,903 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 13:01:16,903 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 13:01:16,903 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_45593965-1e14-44ec-95a2-5acc1a44429e/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 -> 269d8c78f03cf287c7b740c1cbaca497af69bf0a [2018-11-28 13:01:16,924 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:01:16,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:01:16,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:01:16,934 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:01:16,934 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:01:16,935 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/bin-2019/uautomizer/../../sv-benchmarks/c/array-multidimensional/copy-partial-3-u_true-unreach-call.i [2018-11-28 13:01:16,969 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/bin-2019/uautomizer/data/d74e24c73/ef215001357f4df2bcf928339095161d/FLAG526c828f0 [2018-11-28 13:01:17,310 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:01:17,311 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/sv-benchmarks/c/array-multidimensional/copy-partial-3-u_true-unreach-call.i [2018-11-28 13:01:17,316 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/bin-2019/uautomizer/data/d74e24c73/ef215001357f4df2bcf928339095161d/FLAG526c828f0 [2018-11-28 13:01:17,735 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/bin-2019/uautomizer/data/d74e24c73/ef215001357f4df2bcf928339095161d [2018-11-28 13:01:17,737 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:01:17,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:01:17,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:01:17,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:01:17,741 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:01:17,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:01:17" (1/1) ... [2018-11-28 13:01:17,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ccccc15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:01:17, skipping insertion in model container [2018-11-28 13:01:17,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:01:17" (1/1) ... [2018-11-28 13:01:17,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:01:17,761 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:01:17,873 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:01:17,876 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:01:17,894 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:01:17,909 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:01:17,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:01:17 WrapperNode [2018-11-28 13:01:17,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:01:17,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:01:17,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:01:17,910 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:01:17,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:01:17" (1/1) ... [2018-11-28 13:01:17,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:01:17" (1/1) ... [2018-11-28 13:01:17,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:01:17,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:01:17,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:01:17,924 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:01:17,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:01:17" (1/1) ... [2018-11-28 13:01:17,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:01:17" (1/1) ... [2018-11-28 13:01:17,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:01:17" (1/1) ... [2018-11-28 13:01:17,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:01:17" (1/1) ... [2018-11-28 13:01:17,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:01:17" (1/1) ... [2018-11-28 13:01:17,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:01:17" (1/1) ... [2018-11-28 13:01:17,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:01:17" (1/1) ... [2018-11-28 13:01:17,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:01:17,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:01:17,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:01:17,977 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:01:17,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:01:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/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 [2018-11-28 13:01:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 13:01:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 13:01:18,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 13:01:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 13:01:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:01:18,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:01:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 13:01:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 13:01:18,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 13:01:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 13:01:18,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 13:01:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 13:01:18,169 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:01:18,169 INFO L280 CfgBuilder]: Removed 9 assue(true) statements. [2018-11-28 13:01:18,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:01:18 BoogieIcfgContainer [2018-11-28 13:01:18,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:01:18,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 13:01:18,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 13:01:18,173 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 13:01:18,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 01:01:17" (1/3) ... [2018-11-28 13:01:18,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f43cc0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:01:18, skipping insertion in model container [2018-11-28 13:01:18,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:01:17" (2/3) ... [2018-11-28 13:01:18,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f43cc0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:01:18, skipping insertion in model container [2018-11-28 13:01:18,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:01:18" (3/3) ... [2018-11-28 13:01:18,175 INFO L112 eAbstractionObserver]: Analyzing ICFG copy-partial-3-u_true-unreach-call.i [2018-11-28 13:01:18,181 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 13:01:18,185 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 13:01:18,194 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 13:01:18,215 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:01:18,215 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 13:01:18,215 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 13:01:18,215 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 13:01:18,216 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:01:18,216 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:01:18,216 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 13:01:18,216 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:01:18,216 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 13:01:18,227 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-11-28 13:01:18,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 13:01:18,231 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:01:18,232 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:01:18,233 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:01:18,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:01:18,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1773460249, now seen corresponding path program 1 times [2018-11-28 13:01:18,238 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:01:18,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:01:18,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:01:18,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:01:18,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:01:18,293 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 13:01:18,293 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 13:01:18,293 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 13:01:18,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:01:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:01:18,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:01:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:01:18,359 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:01:18,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:01:18,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 13:01:18,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 13:01:18,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 13:01:18,371 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2018-11-28 13:01:18,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:01:18,386 INFO L93 Difference]: Finished difference Result 66 states and 103 transitions. [2018-11-28 13:01:18,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 13:01:18,387 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-11-28 13:01:18,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:01:18,393 INFO L225 Difference]: With dead ends: 66 [2018-11-28 13:01:18,393 INFO L226 Difference]: Without dead ends: 31 [2018-11-28 13:01:18,395 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 13:01:18,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-28 13:01:18,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-28 13:01:18,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-28 13:01:18,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2018-11-28 13:01:18,419 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 17 [2018-11-28 13:01:18,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:01:18,419 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2018-11-28 13:01:18,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 13:01:18,419 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2018-11-28 13:01:18,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 13:01:18,420 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:01:18,420 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:01:18,420 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:01:18,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:01:18,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1763514787, now seen corresponding path program 1 times [2018-11-28 13:01:18,421 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:01:18,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:01:18,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:01:18,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:01:18,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:01:18,428 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 13:01:18,428 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 13:01:18,428 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 13:01:18,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:01:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:01:18,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:01:18,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:01:18,497 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:01:18,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 13:01:18,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 13:01:18,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:01:18,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:01:18,499 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand 3 states. [2018-11-28 13:01:18,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:01:18,562 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2018-11-28 13:01:18,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:01:18,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-11-28 13:01:18,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:01:18,563 INFO L225 Difference]: With dead ends: 56 [2018-11-28 13:01:18,563 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 13:01:18,564 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:01:18,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 13:01:18,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2018-11-28 13:01:18,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-28 13:01:18,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2018-11-28 13:01:18,569 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 17 [2018-11-28 13:01:18,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:01:18,569 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2018-11-28 13:01:18,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 13:01:18,569 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2018-11-28 13:01:18,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 13:01:18,570 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:01:18,570 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:01:18,570 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:01:18,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:01:18,570 INFO L82 PathProgramCache]: Analyzing trace with hash -2133227694, now seen corresponding path program 1 times [2018-11-28 13:01:18,571 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:01:18,571 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:01:18,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:01:18,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:01:18,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:01:18,576 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 13:01:18,576 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 13:01:18,577 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 13:01:18,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:01:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:01:18,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:01:18,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:01:18,654 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:01:18,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 13:01:18,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:01:18,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:01:18,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:01:18,655 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 4 states. [2018-11-28 13:01:18,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:01:18,737 INFO L93 Difference]: Finished difference Result 72 states and 96 transitions. [2018-11-28 13:01:18,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:01:18,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-11-28 13:01:18,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:01:18,741 INFO L225 Difference]: With dead ends: 72 [2018-11-28 13:01:18,741 INFO L226 Difference]: Without dead ends: 47 [2018-11-28 13:01:18,741 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:01:18,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-28 13:01:18,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34. [2018-11-28 13:01:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 13:01:18,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2018-11-28 13:01:18,751 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 20 [2018-11-28 13:01:18,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:01:18,751 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2018-11-28 13:01:18,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:01:18,751 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2018-11-28 13:01:18,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 13:01:18,752 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:01:18,752 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:01:18,752 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:01:18,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:01:18,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1108398309, now seen corresponding path program 1 times [2018-11-28 13:01:18,752 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:01:18,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:01:18,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:01:18,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:01:18,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:01:18,757 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 13:01:18,757 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 13:01:18,758 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 13:01:18,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:01:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:01:18,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:01:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:01:18,827 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:01:18,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 13:01:18,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:01:18,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:01:18,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:01:18,828 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand 4 states. [2018-11-28 13:01:18,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:01:18,872 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2018-11-28 13:01:18,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:01:18,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-28 13:01:18,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:01:18,873 INFO L225 Difference]: With dead ends: 72 [2018-11-28 13:01:18,873 INFO L226 Difference]: Without dead ends: 45 [2018-11-28 13:01:18,873 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:01:18,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-28 13:01:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2018-11-28 13:01:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 13:01:18,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-28 13:01:18,877 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 23 [2018-11-28 13:01:18,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:01:18,878 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-28 13:01:18,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:01:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-28 13:01:18,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 13:01:18,878 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:01:18,878 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:01:18,879 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:01:18,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:01:18,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1602833213, now seen corresponding path program 1 times [2018-11-28 13:01:18,879 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:01:18,879 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:01:18,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:01:18,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:01:18,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:01:18,883 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 13:01:18,884 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 13:01:18,884 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 13:01:18,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:01:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:01:18,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:01:18,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:01:18,932 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 13:01:18,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-11-28 13:01:18,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 13:01:18,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 13:01:18,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:01:18,933 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 5 states. [2018-11-28 13:01:19,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:01:19,005 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2018-11-28 13:01:19,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:01:19,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-11-28 13:01:19,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:01:19,006 INFO L225 Difference]: With dead ends: 83 [2018-11-28 13:01:19,006 INFO L226 Difference]: Without dead ends: 54 [2018-11-28 13:01:19,007 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:01:19,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-28 13:01:19,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2018-11-28 13:01:19,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-28 13:01:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-11-28 13:01:19,014 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 24 [2018-11-28 13:01:19,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:01:19,014 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-11-28 13:01:19,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 13:01:19,014 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-11-28 13:01:19,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 13:01:19,015 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:01:19,015 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:01:19,015 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:01:19,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:01:19,016 INFO L82 PathProgramCache]: Analyzing trace with hash 249553947, now seen corresponding path program 2 times [2018-11-28 13:01:19,016 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:01:19,016 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:01:19,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:01:19,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:01:19,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:01:19,022 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 13:01:19,023 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 13:01:19,023 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 13:01:19,038 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:01:19,050 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-28 13:01:19,050 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:01:19,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:01:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-28 13:01:19,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:01:19,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 13:01:19,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:01:19,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:01:19,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:01:19,122 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-11-28 13:01:19,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:01:19,161 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2018-11-28 13:01:19,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:01:19,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-28 13:01:19,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:01:19,162 INFO L225 Difference]: With dead ends: 74 [2018-11-28 13:01:19,163 INFO L226 Difference]: Without dead ends: 60 [2018-11-28 13:01:19,163 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:01:19,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-28 13:01:19,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2018-11-28 13:01:19,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 13:01:19,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2018-11-28 13:01:19,170 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 25 [2018-11-28 13:01:19,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:01:19,170 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2018-11-28 13:01:19,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:01:19,171 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2018-11-28 13:01:19,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-28 13:01:19,171 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:01:19,171 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:01:19,172 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:01:19,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:01:19,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1698801625, now seen corresponding path program 1 times [2018-11-28 13:01:19,172 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:01:19,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:01:19,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:01:19,173 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:01:19,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:01:19,178 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 13:01:19,178 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 13:01:19,178 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 13:01:19,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:01:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:01:19,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:01:19,255 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-28 13:01:19,274 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 13:01:19,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-11-28 13:01:19,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 13:01:19,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 13:01:19,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:01:19,275 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 6 states. [2018-11-28 13:01:19,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:01:19,344 INFO L93 Difference]: Finished difference Result 94 states and 121 transitions. [2018-11-28 13:01:19,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 13:01:19,345 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2018-11-28 13:01:19,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:01:19,345 INFO L225 Difference]: With dead ends: 94 [2018-11-28 13:01:19,345 INFO L226 Difference]: Without dead ends: 62 [2018-11-28 13:01:19,346 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:01:19,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-11-28 13:01:19,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 41. [2018-11-28 13:01:19,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 13:01:19,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2018-11-28 13:01:19,352 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33 [2018-11-28 13:01:19,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:01:19,352 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2018-11-28 13:01:19,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 13:01:19,352 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2018-11-28 13:01:19,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-28 13:01:19,353 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:01:19,353 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:01:19,353 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:01:19,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:01:19,353 INFO L82 PathProgramCache]: Analyzing trace with hash -602786922, now seen corresponding path program 2 times [2018-11-28 13:01:19,353 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:01:19,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:01:19,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:01:19,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:01:19,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:01:19,358 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 13:01:19,358 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 13:01:19,358 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 13:01:19,365 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:01:19,380 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-28 13:01:19,381 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:01:19,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:01:19,414 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2018-11-28 13:01:19,417 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 3 [2018-11-28 13:01:19,417 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 13:01:19,418 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 13:01:19,422 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 13:01:19,423 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:51, output treesize:3 [2018-11-28 13:01:19,437 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-28 13:01:19,451 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:01:19,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 13:01:19,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 13:01:19,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 13:01:19,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:01:19,452 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 5 states. [2018-11-28 13:01:19,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:01:19,469 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2018-11-28 13:01:19,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:01:19,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-11-28 13:01:19,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:01:19,470 INFO L225 Difference]: With dead ends: 41 [2018-11-28 13:01:19,470 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 13:01:19,471 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:01:19,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 13:01:19,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 13:01:19,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 13:01:19,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 13:01:19,471 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2018-11-28 13:01:19,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:01:19,472 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:01:19,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 13:01:19,472 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 13:01:19,472 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 13:01:19,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 13:01:19,567 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 13:01:19,568 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 13:01:19,568 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 13:01:19,568 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 13:01:19,568 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 13:01:19,568 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 13:01:19,568 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 13:01:19,568 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 81) no Hoare annotation was computed. [2018-11-28 13:01:19,568 INFO L444 ceAbstractionStarter]: At program point L52-2(lines 52 55) the Hoare annotation is: (<= 500 main_~p~0) [2018-11-28 13:01:19,568 INFO L448 ceAbstractionStarter]: For program point L52-3(lines 52 55) no Hoare annotation was computed. [2018-11-28 13:01:19,569 INFO L444 ceAbstractionStarter]: At program point L70-2(lines 70 77) the Hoare annotation is: (<= 500 main_~p~0) [2018-11-28 13:01:19,569 INFO L448 ceAbstractionStarter]: For program point L70-3(lines 70 77) no Hoare annotation was computed. [2018-11-28 13:01:19,569 INFO L444 ceAbstractionStarter]: At program point L29-2(lines 29 36) the Hoare annotation is: (<= 500 main_~p~0) [2018-11-28 13:01:19,569 INFO L448 ceAbstractionStarter]: For program point L29-3(lines 29 36) no Hoare annotation was computed. [2018-11-28 13:01:19,569 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 11 81) no Hoare annotation was computed. [2018-11-28 13:01:19,569 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 81) the Hoare annotation is: true [2018-11-28 13:01:19,569 INFO L444 ceAbstractionStarter]: At program point L47-2(lines 47 59) the Hoare annotation is: (<= 500 main_~p~0) [2018-11-28 13:01:19,569 INFO L448 ceAbstractionStarter]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2018-11-28 13:01:19,569 INFO L444 ceAbstractionStarter]: At program point L72-2(lines 72 75) the Hoare annotation is: (<= 500 main_~p~0) [2018-11-28 13:01:19,569 INFO L448 ceAbstractionStarter]: For program point L72-3(lines 72 75) no Hoare annotation was computed. [2018-11-28 13:01:19,570 INFO L444 ceAbstractionStarter]: At program point L31-2(lines 31 34) the Hoare annotation is: (<= 500 main_~p~0) [2018-11-28 13:01:19,570 INFO L448 ceAbstractionStarter]: For program point L31-3(lines 31 34) no Hoare annotation was computed. [2018-11-28 13:01:19,570 INFO L444 ceAbstractionStarter]: At program point L73(line 73) the Hoare annotation is: (and (<= 500 main_~p~0) (= |main_#t~mem4| |main_#t~mem3|)) [2018-11-28 13:01:19,570 INFO L448 ceAbstractionStarter]: For program point L73-1(line 73) no Hoare annotation was computed. [2018-11-28 13:01:19,570 INFO L444 ceAbstractionStarter]: At program point L50-2(lines 50 57) the Hoare annotation is: (<= 500 main_~p~0) [2018-11-28 13:01:19,571 INFO L448 ceAbstractionStarter]: For program point L50-3(lines 50 57) no Hoare annotation was computed. [2018-11-28 13:01:19,571 INFO L444 ceAbstractionStarter]: At program point L67-2(lines 67 79) the Hoare annotation is: (<= 500 main_~p~0) [2018-11-28 13:01:19,572 INFO L448 ceAbstractionStarter]: For program point L67-3(lines 67 79) no Hoare annotation was computed. [2018-11-28 13:01:19,572 INFO L444 ceAbstractionStarter]: At program point L26-2(lines 26 38) the Hoare annotation is: (<= 500 main_~p~0) [2018-11-28 13:01:19,572 INFO L448 ceAbstractionStarter]: For program point L26-3(lines 26 38) no Hoare annotation was computed. [2018-11-28 13:01:19,572 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-28 13:01:19,572 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-28 13:01:19,572 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-28 13:01:19,572 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-28 13:01:19,572 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-28 13:01:19,572 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-28 13:01:19,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 01:01:19 BoogieIcfgContainer [2018-11-28 13:01:19,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 13:01:19,582 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:01:19,582 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:01:19,582 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:01:19,582 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:01:18" (3/4) ... [2018-11-28 13:01:19,585 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 13:01:19,589 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 13:01:19,589 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 13:01:19,589 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-28 13:01:19,593 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-11-28 13:01:19,593 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-28 13:01:19,593 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-28 13:01:19,593 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 13:01:19,630 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_45593965-1e14-44ec-95a2-5acc1a44429e/bin-2019/uautomizer/witness.graphml [2018-11-28 13:01:19,630 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:01:19,631 INFO L168 Benchmark]: Toolchain (without parser) took 1893.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 958.7 MB in the beginning and 911.6 MB in the end (delta: 47.1 MB). Peak memory consumption was 198.6 MB. Max. memory is 11.5 GB. [2018-11-28 13:01:19,632 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:01:19,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.17 ms. Allocated memory is still 1.0 GB. Free memory was 958.7 MB in the beginning and 947.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-28 13:01:19,633 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.91 ms. Allocated memory is still 1.0 GB. Free memory was 947.8 MB in the beginning and 945.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:01:19,633 INFO L168 Benchmark]: Boogie Preprocessor took 52.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -199.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2018-11-28 13:01:19,634 INFO L168 Benchmark]: RCFGBuilder took 192.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2018-11-28 13:01:19,634 INFO L168 Benchmark]: TraceAbstraction took 1411.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 914.8 MB in the end (delta: 208.8 MB). Peak memory consumption was 208.8 MB. Max. memory is 11.5 GB. [2018-11-28 13:01:19,634 INFO L168 Benchmark]: Witness Printer took 48.51 ms. Allocated memory is still 1.2 GB. Free memory was 914.8 MB in the beginning and 911.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-11-28 13:01:19,636 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 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 171.17 ms. Allocated memory is still 1.0 GB. Free memory was 958.7 MB in the beginning and 947.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.91 ms. Allocated memory is still 1.0 GB. Free memory was 947.8 MB in the beginning and 945.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 52.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -199.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 192.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1411.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 914.8 MB in the end (delta: 208.8 MB). Peak memory consumption was 208.8 MB. Max. memory is 11.5 GB. * Witness Printer took 48.51 ms. Allocated memory is still 1.2 GB. Free memory was 914.8 MB in the beginning and 911.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 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: 29]: Loop Invariant Derived loop invariant: 500 <= p - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: 500 <= p - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 500 <= p - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 500 <= p - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 500 <= p - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 500 <= p - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 500 <= p - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: 500 <= p - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: 500 <= p - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 36 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 234 SDtfs, 175 SDslu, 298 SDs, 0 SdLazy, 217 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 187 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=7, 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, 8 MinimizatonAttempts, 84 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 22 PreInvPairs, 42 NumberOfFragments, 39 HoareAnnotationTreeSize, 22 FomulaSimplifications, 4772 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 194 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 7010 SizeOfPredicates, 22 NumberOfNonLiveVariables, 778 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 33/37 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...